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g for a nation? Is a decrease in the unemployment rate necessarily 31. a good thing for a nation? Explain. 32. If many workers become discouraged from looking for jobs, explain how the number of jobs could decline but the unemployment rate could fall at the same time. 38. Under what condition would a decrease in unempl... |
Pound of ground beef Pound of butter Movie ticket $0.66 $0.87 $1.55 $3.62 $2.03 $8.65 Sales price of new home (median) $22,000 $312,900 New car Gallon of gasoline Average hourly wage for a manufacturing worker Per capita GDP $3,000 $0.36 $3.23 $4,077 $2.35 $20.65 $5,069 $57,294 Table 9.1 Price Comparisons, 1970 and 201... |
her data. They transform the other data so that it is easier to work with the data. Second, the choice of a base year for the index number—that is, the year that is automatically set equal to 100—is arbitrary. We choose it as a starting point from which we can track changes in prices. In the official inflation statisti... |
. Medical care (prescription drugs and medical supplies, physicians’ services, eyeglasses and eye care, hospital services) 6. Recreation (televisions, cable television, pets and pet products, sports equipment, admissions) 7. Education and communication (college tuition, postage, telephone services, computer software an... |
falls to 13 or 14 until 1940. It gradually increases until about 1973, then increases more rapidly through the remainder of the 1970s and beyond, with periodic dips, until 2016, when it reached around 240. Graph b shows the trends in U.S. inflation rates from the year 1914 to 2016. In 1916, the graph starts out with in... |
wer Inflation can cause redistributions of purchasing power that hurt some and help others. People who are hurt by inflation include those who are holding considerable cash, whether it is in a safe deposit box or in a cardboard box under the bed. When inflation happens, the buying power of cash diminishes. However, cas... |
g difficult. In discussing unintended redistributions, we considered the case of someone trying to plan for retirement with a pension that is fixed in nominal terms and a high rate of inflation. Similar problems arise for all people trying to save for retirement, because they must consider what their money will really ... |
istributions and other effects of inflation. However, some of the fiercest opponents of inflation express grave concern about indexing. They point out that indexing is always partial. Not every employer will provide COLAs for workers. Not all companies can assume that costs and revenues will rise in lockstep with the g... |
d Its Limitations A payment is indexed if it is automatically adjusted for inflation. Examples of indexing in the private sector include wage contracts with cost-of-living adjustments (COLAs) and loan agreements like adjustable-rate mortgages (ARMs). Examples of indexing in the public sector include tax brackets and So... |
d a nation’s dollar value of imports, or the foreign-made products and services that households and businesses purchase. Recall from The Macroeconomic Perspective that if exports exceed imports, the economy has a trade surplus. If imports exceed exports, the economy has a trade deficit. If exports and imports are equal... |
tocks and bonds: $561 Income received by foreign investors on U.S. assets: $472 Step 1. Focus on goods and services first. Enter the dollar amount of exports of both goods and services under the Export column. Step 2. Enter imports of goods and services under the Import column. Step 3. Under the Export column and in th... |
tion system, Robinson decides that he does not want to repay Friday as much as he previously agreed. Any of these developments will prompt a new round of negotiations between Friday and Robinson. Why the repayment failed is likely to shape Friday’s attitude toward these renegotiations. If Robinson worked very hard and ... |
eficits, which mean the government is spending more than it collects in taxes, and so the government needs to borrow funds. In this case, the government term would be G – T > 0, showing that spending is larger than taxes, and the government would be a demander of financial capital on the left-hand side of the equation ... |
changed. Alternatively, the inflow of foreign financial capital could result in higher domestic investment, leaving private and public saving unchanged. Yet another possibility is that greater government borrowing could absorb the inflow of foreign financial capital, leaving domestic saving and investment unchanged. Th... |
lances, which offered some illustrative figures on trade levels and balances. A country’s level of trade tells how much of its production it exports. We measure this by the percent of exports out of GDP. It indicates the degree of an economy's globalization. Some countries, such as Germany, have a high level of trade—t... |
ee of economic health, and trade deficits are no guarantee of economic weakness. Either trade deficits or trade surpluses can work out well or poorly, depending on whether a government wisely invests the corresponding flows of financial capital. 10.6 The Difference between Level of Trade and the Trade Balance There is ... |
of foreign saving for each country. b. State whether each one has a trade surplus or deficit (or balanced trade). c. State whether each is a net lender or borrower internationally and explain. This OpenStax book is available for free at http://cnx.org/content/col12190/1.4 Chapter 11 | The Aggregate Demand/Aggregate Su... |
of demand in the economy as a whole led to inadequate incentives for firms to produce. In such cases, he argued, the level of GDP in the economy was not primarily determined by the potential of what the economy could supply, but rather by the amount of total demand. Keynes’ law seems to apply fairly well in the short r... |
at, as the price level rises, the amount of total spending on domestic goods and services declines. This OpenStax book is available for free at http://cnx.org/content/col12190/1.4 Chapter 11 | The Aggregate Demand/Aggregate Supply Model 275 The wealth effect holds that as the price level increases, the buying power of ... |
ty of labor. One measure of this is output per worker or GDP per capita. Over time, productivity grows so that the same quantity of labor can produce more output. Historically, the real growth in GDP per capita in an advanced economy like the United States has averaged about 2% to 3% per year, but productivity growth h... |
he AD curve, and a move of the equilibrium, from E0 to E1, to a higher quantity of output and a higher price level, as Figure 11.8 (a) shows. Consumer and business confidence often reflect macroeconomic realities; for example, confidence is usually high when the economy is growing briskly and low during a recession. Ho... |
e, we consider how the AD/AS model illustrates the three macroeconomic goals of economic growth, low unemployment, and low inflation. Growth and Recession in the AD/AS Diagram In the AD/AS diagram, long-run economic growth due to productivity increases over time will be represented by a gradual shift to the right of ag... |
curve close to the level of potential GDP largely determines the quantity of output. In the intermediate zone around equilibrium Ei, movement in AD to the right will increase both the output level and the price level, while a movement in AD to the left would decrease both the output level and the price level. Focus fir... |
the foreign price effect, which holds that a rise in the price level will make domestic goods relatively more expensive, discouraging exports and encouraging imports. 11.3 Shifts in Aggregate Supply The aggregate demand/aggregate supply (AD/AS) diagram shows how AD and AS interact. The intersection of the AD and AS cur... |
elopment in the labor market that year, how would this affect the AS curve? What if it was also accompanied by an increase in worker productivity? 44. If new government regulations require firms to use a cleaner technology that is also less efficient than what they previously used, what would the effect be on output, t... |
f output below potential and vertical at potential output. Thus, when beginning from potential output, any decrease in AD affects only output, but not prices. Any increase in AD affects only prices, not output. Keynes argued that, for reasons we explain shortly, aggregate demand is not stable—that it can change unexpec... |
in foreign demand Net Exports • Increase in foreign demand • Relative price increase of U.S. goods • Relative price drop of U.S. goods Table 12.1 Determinants of Aggregate Demand 302 Chapter 12 | The Keynesian Perspective 12.2 | The Building Blocks of Keynesian Analysis By the end of this section, you will be able to: ... |
ll the adjustment occurs through decreased real GDP. There is no decrease in the price level. Since the equilibrium occurs at Y1, the economy experiences substantial unemployment. Figure 12.6 A Keynesian Perspective of Recession This figure illustrates the two key assumptions behind Keynesian economics. A recession beg... |
s. He proposed that the government could bury money underground, and let mining companies start digging up the money again. These suggestions were slightly tongue-in-cheek, but their purpose was to emphasize that a Great Depression is no time to quibble over the specifics of government spending programs and tax cuts wh... |
ituation, unemployment is low, but inflationary rises in the price level are a concern. The Keynesian response would be contractionary fiscal policy, using tax increases or government spending cuts to shift AD to the left. 12.4 The Keynesian Perspective on Market Forces The Keynesian prescription for stabilizing the ec... |
leftward shift of the aggregate demand curve), it would temporarily exhibit a surplus of goods. Falling prices would eliminate this surplus, and the economy would return to full employment level of GDP. No active fiscal or monetary policy was needed. In fact, the classical view was that expansionary fiscal or monetary... |
t some economic event boosts aggregate demand: perhaps a surge of export sales or a rise in business confidence that leads to more investment, perhaps a policy decision like higher government spending, or perhaps a tax cut that leads to additional aggregate demand. The short-run Keynesian analysis is that the rise in a... |
s of the Neoclassical Perspective By the end of this section, you will be able to: • Discuss why and how economists measure inflation expectations • Analyze the impacts of fiscal and monetary policy on aggregate supply and aggregate demand • Explain the neoclassical Phillips curve, noting its tradeoff between inflation... |
The unemployment rate on the long-run Phillips curve will be the natural rate of unemployment. A small inflationary increase in the price level from AD0 to AD1 will have the same natural rate of unemployment as a larger inflationary increase in the price level from AD0 to AD2. The macroeconomic equilibrium along the ve... |
omfortable, but there does not seem to be any way to avoid it. Each approach, Keynesian and neoclassical, has its strengths and weaknesses. The short-term Keynesian model, built on the importance of aggregate demand as a cause of business cycles and a degree of wage and price rigidity, does a sound job of explaining ma... |
n cyclical unemployment or on inflation? Explain briefly. CRITICAL THINKING QUESTIONS If most people have rational expectations, how 17. long will recessions last? 18. Explain why the neoclassical economists believe that the government does not need to do much about unemployment. Do you agree or disagree? Explain. 12. ... |
t must also be acceptable to make purchases today that the purchaser will pay in the future. Loans and future agreements are stated in monetary terms and the standard of deferred payment is what allows us to buy goods and services today and pay in the future. Thus, money serves all of these functions— it is a medium of... |
, any more than printing more checks increases the amount of money in your checking account. One key message underlying this discussion of M1 and M2 is that money in a modern economy is not just paper bills and coins. Instead, money is closely linked to bank accounts. The banking system largely conducts macroeconomic p... |
itutions buy and sell these loans is the secondary loan market. One key factor that affects what financial institutions are willing to pay for a loan, when they buy it in the secondary loan market, is the perceived riskiness of the loan: that is, given the borrower's characteristics, such as income level and whether th... |
en a bank diversifies its loans, those categories of borrowers who have an unexpectedly large number of defaults will tend to be balanced out, according to random chance, by other borrowers who have an unexpectedly low number of defaults. Thus, diversification of loans can help banks to keep a positive net worth. Howev... |
onstruction, and car manufacturing. The 2008–2009 Great Recession illustrated this pattern. The Many Disguises of Money: From Cowries to Bit Coins The global economy has come a long way since it started using cowrie shells as currency. We have moved away from commodity and commodity-backed paper money to fiat currency.... |
America card b. $50 dollars’ worth of traveler’s checks you have not used yet c. $1 in quarters in your pocket d. $1200 in your checking account e. $2000 you have in a money market account 5. Explain why the money listed under assets on a bank balance sheet may not actually be in the bank? 6. Imagine that you are in t... |
hold this post. The media had described Yellen as “perhaps the most qualified Fed chair in history.” With a Ph.D. in economics from Yale University, Yellen has taught macroeconomics at Harvard, the London School of Economics, and most recently at the University of California at Berkeley. From 2004–2010, Yellen was Pre... |
nce to accumulate. Bank Runs Back in the nineteenth century and during the first few decades of the twentieth century (around and during the Great Depression), putting your money in a bank could be nerve-wracking. Imagine that the net worth of your bank became negative, so that the bank’s assets were not enough to cove... |
a bank is receiving payments on loans that it made previously and also making new loans. If the bank just slows down or briefly halts making new loans, and instead adds those funds to its reserves, then its overall quantity of loans will decrease. A decrease in the quantity of loans also means fewer deposits in other ... |
s situation. This example uses a short-run upward-sloping Keynesian aggregate supply curve (SRAS). The original equilibrium during a recession of E0 occurs at an output level of 600. An expansionary monetary policy will reduce interest rates and stimulate investment and consumption spending, causing the original aggreg... |
ed securities, the Fed was both pushing long term interest rates down and also removing possibly “toxic assets” from the balance sheets of private financial firms, which would strengthen the financial system. Quantitative easing (QE) occurred in three episodes: 1. During QE1, which began in November 2008, the Fed purch... |
es expansionary monetary policy to reduce the nominal interest rate all the way to zero—but the economy has 5% deflation. As a result, the real interest rate is 5%, and because a central bank cannot make the nominal interest rate negative, expansionary policy cannot reduce the real interest rate further. In the U.S. ec... |
and in that way influence macroeconomic outcomes. Asset Bubbles and Leverage Cycles One long-standing concern about having the central bank focus on inflation and unemployment is that it may be overlooking certain other economic problems that are coming in the future. For example, from 1994 to 2000 during what was kno... |
n be treated like any other business failure. Yet if many banks fail, it can reduce aggregate demand in a way that can bring on or deepen a recession. The combination of deposit insurance, bank supervision, and lender of last resort policies help to prevent weaknesses in the banking system from causing recessions. 15.3... |
ollar. For international economic transactions, households or firms will wish to exchange one currency for another. Perhaps the need for exchanging currencies will come from a German firm that exports products to Russia, but then wishes to exchange the Russian rubles it has earned for euros, so that the firm can pay it... |
at the contract will be worth, and not take a risk that the euro will be worth less in U.S. dollars than it currently is. You can hedge, which means using a financial transaction to protect yourself against a risk from one of your investments (in this case, currency risk from the contract). Specifically, you can sign a... |
hened. As a result, the stronger dollar means that the importing firm will earn higher profits than expected. The firm will seek to expand its sales in the U.S. economy, or it may reduce prices, which will also lead to expanded sales. In this way, a stronger U.S. dollar means that consumers will purchase more from fore... |
mes, runs an article predicting that the Mexican peso will appreciate in value. Figure 16.6 illustrates the likely effects of such an article. Demand for the Mexican peso shifts to the right, from D0 to D1, as investors become eager to purchase pesos. Conversely, the supply of pesos shifts to the left, from S0 to S1, b... |
to expectations about how interest rates and inflation will shift, the exchange rates will often move away from the PPP exchange rate for a time. However, knowing the PPP will allow you to track and predict exchange rate relationships. This OpenStax book is available for free at http://cnx.org/content/col12190/1.4 Chap... |
ating exchange rate, as are the currencies of about 40% of the countries in the world economy. The major concern with this policy is that exchange rates can move a great deal in a short time. Consider the U.S. exchange rate expressed in terms of another fairly stable currency, the Japanese yen, as Figure 16.11 shows. O... |
d to keep the exchange rate at the hard peg. Another issue arises when a central bank intervenes directly in the exchange rate market. If a central bank ends up in a situation where it is perpetually creating and selling its own currency on foreign exchange markets, it will be buying the currency of other countries, li... |
lance of trade will probably do just fine most of the time with any exchange rate policy. Conversely, no exchange rate policy is likely to save an economy that consistently fails at achieving these goals. Alternatively, a merged currency applied across wide geographic and cultural areas carries with it its own set of p... |
exchange rate, net exports, aggregate demand, and aggregate supply? 8. A central bank can allow its currency to fall indefinitely, but it cannot allow its currency to rise indefinitely. Why not? Is a country for which imports and exports comprise a large fraction of the GDP more likely to adopt a flexible 9. exchange ... |
e expenditures include both payments for senior citizens (Medicare), and payments for low-income Americans (Medicaid). State governments also partially fund Medicaid. Interest payments are the final main category of government spending in Figure 30.2. Figure 17.2 Federal Spending, 1960–2014 Since 1960, total federal sp... |
clined as a share of GDP, from about 4% in the 1960s to an average of 1% to 2% of GDP in the first decade of the 2000s. The federal government has a few other, smaller sources of revenue. It imposes an excise tax—that is, a tax on a particular good—on gasoline, tobacco, and alcohol. As a share of GDP, the amount the go... |
in 2080. If this rise in spending occurs, without any corresponding rise in tax collections, then some mix of changes must occur: (1) taxes will need to increase dramatically; (2) other spending will need to be cut dramatically; (3) the retirement age and/or age receiving Medicare benefits will need to increase, or (4... |
cates of smaller government, who seek to reduce taxes and government spending can use the AD AS model, as well as advocates of bigger government, who seek to raise taxes and government spending. Economic studies of specific taxing and spending programs can help inform decisions about whether the government should chang... |
ou will be able to: • Understand how fiscal policy and monetary policy are interconnected • Explain the three lag times that often occur when solving economic problems • Identify the legal and political challenges of responding to an economic problem In the early 1960s, many leading economists believed that the problem... |
uce at an output level above potential GDP without causing inflation At this point, unemployment becomes so low that workers become scarce and wages rise rapidly. Visit this website (http://openstaxcollege.org/l/fiscalpolicy) to read about how fiscal policies are affecting the recovery. Political Realties and Discretio... |
for Social Security and Medicare progressive tax incomes a tax that collects a greater share of income from those with high incomes than from those with lower proportional tax a tax that is a flat percentage of income earned, regardless of level of income recognition lag the time it takes to determine that a recession... |
d a regressive tax? 27. What has been the general pattern of U.S. budget deficits in recent decades? CRITICAL THINKING QUESTIONS 28. What is the difference between a budget deficit and the national debt? 29. What is the difference between expansionary fiscal policy and contractionary fiscal policy? 30. Under what gener... |
The Impacts of Government Borrowing 437 These include the inflow of foreign financial capital from abroad. The inflow of savings from abroad is, by definition, equal to the trade deficit, as we explained in The International Trade and Capital Flows chapter. We can write this inflow of foreign investment capital as imp... |
000s). Then the U.S. budget deficit rises and foreign financial investment provides the source of funds for that budget deficit. International financial investors, as a group, will demand more U.S. dollars on foreign exchange markets to purchase the U.S. government bonds, and they will supply fewer of the U.S. dollars ... |
o reduce their budget deficits, lest they make their economy vulnerable to a rapid outflow of international financial capital that could bring a deep recession. Financing Higher Education Between 1982 and 2012, the increases in the cost of a college education had far outpaced that of the income of the typical American ... |
level, according to the Bureau of Economic Analysis. During that same period, interest rates dropped from 3.94% to less than a quarter percent as the Federal Reserve took dramatic action to prevent a depression by increasing the money supply through lowering short-term interest rates. The "crowding out" of private inve... |
and in the nations of sub-Saharan Africa, only about one student in 20. Not all spending on educational human capital needs to happen through the government: many college students in the United States pay a substantial share of the cost of their education. If low-income countries of the world are going to experience a... |
pter 18 | The Impacts of Government Borrowing 28. Illustrate the concept of Ricardian equivalence using the demand and supply of financial capital graph. 29. During the most recent recession, some economists argued that the change in the interest rates that comes about due to deficit spending implied in the demand and ... |
bank.worldbank.org/data/ views/reports/tableview.aspx?isshared=true&ispopular=series&pid=20) Figure 19.2 Percent of Global GDP and Percent of Population The pie charts show the GDP (from 2011) for countries categorized into low, middle, or high income. Low-income are those earning less than $1,025 (less than 1% of glob... |
it: modification of work by Chatham House/Flickr Creative Commons) As we discussed in other chapters, macroeconomics needs to have both a short-run and a long-run focus. The challenge for many of the developed countries in the next few years will be to exit from the short-term policies that they used to correct the 200... |
izations (NGOs) like CARE International that also receive donor government funds. For example, because of an outbreak of meningitis in Ethiopia in 2010, DFID channeled significant funds to the Ethiopian Ministry of Health to train rural health care workers and also for vaccines. These monies helped the Ministry offset ... |
few goods.” In the case of Zimbabwe, the government covered its widening deficits by printing ever higher currency notes, including a $100 trillion bill. By late 2008, the money was nearly worthless, which led Zimbabwe to adopt the U.S. dollar, immediately halting their hyperinflation. In some countries, the central b... |
many banks in these East Asian countries did not do an especially good job of screening out safe and unsafe borrowers. Many of the loans—as high as 10% to 15% of all loans in some of these This OpenStax book is available for free at http://cnx.org/content/col12190/1.4 Chapter 19 | Macroeconomic Policy Around the World ... |
technological leaders in high-income countries growth consensus a series of studies that show, statistically, that 70% of the differences in income per person across the world is explained by differences in physical capital (savings/investment) high-income country nation with a per capita income of $12,475 or more; ty... |
(http://databank.worldbank.org/data/ home.aspx) for India, Spain, and South Africa for 2011-2015. Prepare a chart that compares India, Spain, and South Africa based on the data. Describe the key differences between the countries. Rank these countries as high-, medium-, and low-income countries. Explain what is surpris... |
esources. Table 20.1 illustrates the advantages of the two countries, expressed in terms of how many hours it takes to produce one unit of each good. Country Oil (hours per barrel) Corn (hours per bushel) Saudi Arabia United States 1 2 4 1 Table 20.1 How Many Hours It Takes to Produce Oil and Corn In Table 20.1, Saudi ... |
have complete specialization, as in Table 20.6? Would there still be gains from trade? Consider another example, such as when the United States and Saudi Arabia start at C and C', respectively, as Figure 20.2 shows. Consider what occurs when trade is allowed and the United States exports 20 bushels of corn to Saudi Ara... |
ill be unambiguously better off. The range of trades that can benefit both nations is shown in Table 20.11. For example, a trade where the U.S. exports 4,000 refrigerators to Mexico in exchange for 1,800 pairs of shoes would benefit both sides, in the sense that This OpenStax book is available for free at http://cnx.or... |
Learning Consider the category of machinery, where the U.S. economy has considerable intra-industry trade. Machinery comes in many varieties, so the United States may be exporting machinery for manufacturing with wood, but importing machinery for photographic processing. The underlying reason why a country like the Un... |
slicing up the value chain, or economies of scale. Moreover, smaller economies often have fewer competitive firms making goods within their economy, and thus firms have less pressure from other firms to provide the goods and prices that consumers want. The economic gains from expanding international trade are measured... |
22. You just got a job in Washington, D.C. You move into an apartment with some acquaintances. All your roommates, however, are slackers and do not clean up after themselves. You, on the other hand, can clean faster than each of them. You determine that you are 70% faster at dishes and 10% faster with vacuuming. All of... |
mported products, like oil, which in a time of war could threaten national security. All of these fears influence governments to reach the same basic policy conclusion: to protect national interests, whether businesses, jobs, or security, imports of foreign products should be restricted. This chapter analyzes such argu... |
plus with the free-trade consumer surplus) and U.S. producers of sugar are worse off. There are gains from trade—an increase in social surplus in each country. That is, both the United States and Brazil are better off than they would be without trade. The following Clear It Up feature explains how trade policy can infl... |
oadly. U.S. consumers pay roughly $1 billion per year in higher food prices because of elevated sugar costs. Meanwhile, sugar producers in low-income countries are driven out of business. Because of the sugar subsidies to domestic producers and the quotas on imports, they cannot sell their output profitably, or at all,... |
-skilled, high-wage workers in the United States, it may also impose costs on low-skilled, low-wage workers. After all, high-skilled U.S. workers presumably benefit from increased sales of sophisticated products like computers, machinery, and pharmaceuticals in which the United States has a comparative advantage. Meanw... |
icy for the computer industry. Protectionism for infant industries always imposes costs on domestic users of the product, and typically has provided little benefit in the form of stronger, competitive industries. However, several countries in East Asia offer an exception. Japan, Korea, Thailand, and other countries in ... |
national firms, which, after all, provide jobs and economic clout. As a result, global production becomes concentrated in countries where firms can pollute the most and environmental laws everywhere “race to the bottom.” Although the race-to-the-bottom scenario sounds plausible, it does not appear to describe reality. ... |
. In fact, among the 47 countries surveyed, the United States ranked by far the lowest on this measure, followed by Egypt, Italy, and Argentina. Country Very Good Somewhat Good Total China South Africa South Korea Germany Canada United Kingdom Mexico Brazil Japan United States 38% 42% 24% 30% 29% 28% 22% 13% 17% 14% 53... |
ommission—a government agency—determines whether the dumping has substantially injured domestic industries, and if so, the president can impose tariffs that are intended to offset the unfairly low price. In the arena of trade policy, the battle often seems to be between national laws that increase protectionism and int... |
duction and impose tariffs that would increase the price of these imports to reflect their cost of production common market economic agreement between countries to allow free trade in goods, services, labor, and financial capital between members while having a common external trade policy disruptive market change innov... |
the average level of wages? Is international trade likely to have about the same 26. effect on everyone’s wages? 27. What are main reasons for protecting “infant industries”? Why is it difficult to stop protecting them? 29. What is the “race to the bottom” scenario? 30. Do the rules of international trade require that ... |
example, suppose your GPA was determined as follows: GPA = 0.25 × combined_SAT + 0.25 × class_attendance + 0.50 × hours_spent_studying This equation states that your GPA depends on three things: your combined SAT score, your class attendance, and the number of hours you spend studying. It also says that study time is t... |
commonly defined a little differently. In the previous example, we defined the quantity as the initial quantity—or the quantity when we started. This is fine for a one-time calculation, but when we compute the growth over and over, it makes more sense to define the quantity as the average quantity over the period in qu... |
that age group. Year Total Population 19 and Under 20–64 years Over 65 1970 2000 2030 205.0 million 275.4 million 351.1 million 77.2 (37.6%) 107.7 (52.5%) 20.1 (9.8%) 78.4 (28.5%) 162.2 (58.9%) 34.8 (12.6%) 92.6 (26.4%) 188.2 (53.6%) 70.3 (20.0%) Table A4 U.S. Age Distribution, 1970, 2000, and 2030 (projected) 534 Appe... |
he same at any point on the line and it indicates the relationship (positive, negative, or zero) between two economic variables. Economic models can be solved algebraically or graphically. Graphs allow you to illustrate data visually. They can illustrate patterns, comparisons, trends, and apportionment by condensing th... |
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