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in statistics, a central tendency (or measure of central tendency) is a central or typical value for a probability distribution. colloquially, measures of central tendency are often called averages. the term central tendency dates from the late 1920s. the most common measures of central tendency are the arithmetic mean... |
celebrity is a condition of fame and broad public recognition of a person or group as a result of the attention given to them by mass media. an individual may attain a celebrity status from having great wealth, their participation in sports or the entertainment industry, their position as a political figure, or even fr... |
in statistics, cluster sampling is a sampling plan used when mutually homogeneous yet internally heterogeneous groupings are evident in a statistical population. it is often used in marketing research. in this sampling plan, the total population is divided into these groups (known as clusters) and a simple random sampl... |
charles pierre baudelaire (, ; ; 9 april 1821 – 31 august 1867) was a french poet who also worked as an essayist, art critic and translator. his poems are described as exhibiting mastery of rhyme and rhythm, containing an exoticism inherited from romantics, and are based on observations of real life. his most famous wo... |
"casey at the bat: a ballad of the republic, sung in the year 1888" is a mock-heroic poem written in 1888 by ernest thayer. it was first published anonymously in the san francisco examiner (then called the daily examiner) on june 3, 1888, under the pen name "phin", based on thayer's college nickname, "phinney". featuri... |
the classical guitar, also called spanish guitar, is a member of the guitar family used in classical music and other styles. an acoustic wooden string instrument with strings made of gut or nylon, it is a precursor of the modern steel-string acoustic and electric guitars, both of which use metal strings. classical guit... |
clive staples lewis, (29 november 1898 – 22 november 1963) was a british writer, literary scholar, and anglican lay theologian. he held academic positions in english literature at both magdalen college, oxford (1925–1954), and magdalene college, cambridge (1954–1963). he is best known as the author of the chronicles of... |
chinese dominoes are used in several tile-based games, namely, tien gow, pai gow, tiu u and kap tai shap. in cantonese they are called (), which literally means "bone tiles"; it is also the name of a northern chinese game, where the rules are quite different from the southern chinese version of tien gow. history ming a... |
the cenozoic ( ; ) is earth's current geological era, representing the last 66million years of earth's history. it is characterised by the dominance of mammals, birds and flowering plants. it is the latest of three geological eras, preceded by the mesozoic and paleozoic. the cenozoic started with the cretaceous–paleoge... |
confucianism, also known as ruism or ru classicism, is a system of thought and behavior originating in ancient china, and is variously described as a tradition, philosophy, (humanistic or rationalistic) religion, theory of government, or way of life. confucianism developed from what was later called the hundred schools... |
chinese philosophy originates in the spring and autumn period and warring states period, during a period known as the "hundred schools of thought", which was characterized by significant intellectual and cultural developments. although much of chinese philosophy begun in the warring states period, elements of chinese p... |
kong fuzi (), more usually kongzi (; , – ), commonly latinized as confucius, was a chinese philosopher of the spring and autumn period who is traditionally considered the paragon of chinese sages. confucius's teachings and philosophy underpin east asian culture and society, and remain influential across china and east ... |
in mathematics, a complex number is an element of a number system that extends the real numbers with a specific element denoted , called the imaginary unit and satisfying the equation ; every complex number can be expressed in the form , where and are real numbers. because no real number satisfies the above equation, w... |
cryptozoology is a pseudoscience and subculture that searches for and studies unknown, legendary, or extinct animals whose present existence is disputed or unsubstantiated, particularly those popular in folklore, such as bigfoot, the loch ness monster, yeti, the chupacabra, the jersey devil, or the mokele-mbembe. crypt... |
craig joseph charles (born 11 july 1964) is an english actor, comedian, dj, and television and radio presenter. he is best known for his roles as dave lister in the science fiction sitcom red dwarf and lloyd mullaney in the soap opera coronation street (2005–2015). he presented the gladiator-style game show robot wars ... |
county mayo (; ) is a county in ireland. in the west of ireland, in the province of connacht, it is named after the village of mayo, now generally known as mayo abbey. mayo county council is the local authority. the population was 137,231 at the 2022 census. the boundaries of the county, which was formed in 1585, refle... |
county fermanagh ( ; ) is one of the thirty-two counties of ireland, one of the nine counties of ulster and one of six counties of northern ireland the county covers an area of 1,691 km2 (653 sq mi) and had a population of 63,585 as of 2021. enniskillen is the county town and largest in both size and population. ferman... |
christian most often refers to: christians, people who follow or adhere to christianity pertaining to christianity christian or the christian may also refer to: arts and entertainment film christian (1939 film), a czech comedy film christian (1989 film), a danish drama film the christian (1911 film), an australian sile... |
the republic of colombia is situated largely in the north-west of south america, with some territories falling within the boundaries of central america. it is bordered to the north-west by panama; to the east by brazil and venezuela; to the south by ecuador and peru; and it shares maritime limits with costa rica, nicar... |
the politics of colombia take place in a framework of a presidential representative democratic republic, whereby the president of colombia is both head of state and head of government, and of a multi-party system. executive power is carried out by the government. legislative power is vested in both the government and t... |
the economy of colombia is the fourth largest in latin america as measured by gross domestic product and the third-largest economic power in south america. colombia has experienced a historic economic boom over the last decade. throughout most of the 20th century, colombia was latin america's 4th and 3rd largest econom... |
since being liberalized in 1991, the colombian telecommunications sector has added new services, expanded coverage, improved efficiency, and lowered costs. the sector has had the second largest (after energy) investment in infrastructure (54 percent) since 1997. however, the economic downturn between 1999 and 2002 adve... |
transport in colombia is regulated by the ministry of transport. road travel is the main means of transport; 69 percent of cargo is transported by road, as compared with 27 percent by railroad, 3 percent by internal waterways, and 1 percent by air. history indigenous peoples influence the indigenous peoples in colombia... |
the military forces of colombia () are the unified armed forces of the republic of colombia. they consist of the colombian army, the colombian navy and the colombian aerospace force. the national police of colombia, although technically not part of the military, is controlled and administered by the ministry of nationa... |
the history of colombia includes the settlements and society by indigenous peoples, most notably, the muisca confederation, quimbaya civilization, and tairona chiefdoms; the spanish arrived in 1492 and initiated a period of annexation and colonization, most noteworthy being spanish conquest; ultimately creating the vic... |
colombia seeks diplomatic and commercial relations with all countries, regardless of their ideologies or political or economic systems. for this reason, the colombian economy is quite open, relying on international trade and following guidelines given by international law. since 2008, colombia's ministry of trade and c... |
the czech republic is a landlocked country in central europe. it is bordered by germany to the west, austria to the south, slovakia to the east and poland to the north. it consists mostly of low hills and plateaus surrounded along the borders by low mountains. two areas of lowlands follow the elbe river and the morava ... |
the czech republic is a unitary parliamentary republic, in which the president is the head of state and the prime minister is the head of government. executive power is exercised by the government of the czech republic, which reports to the chamber of deputies. the legislature is exercised by the parliament. the czech ... |
the economy of the czech republic is a developed export-oriented social market economy based in services, manufacturing, and innovation that maintains a high-income welfare state and the european social model. the czech republic participates in the european single market as a member of the european union, and is theref... |
telephones - main lines in use: 2.888 million (2006) telephones - mobile cellular: 13.075 million (2007) telephone system: domestic: 86% of exchanges now digital; existing copper subscriber systems now being improved with asymmetric digital subscriber line (adsl) equipment to accommodate internet and other digital sign... |
transport in the czech republic relies on several main modes, including transport by road, rail, water and air. railways the czech republic has a total railway length of . the vast majority () is standard gauge. electrified railways generally have voltages of 3 kv dc or 25 kv ac. of track is narrow gauge. the most prom... |
the army of the czech republic (, ačr), also known as the czech army, is the military service responsible for the defence of the czech republic as part of the armed forces of the czech republic () alongside the military office of the president of the republic and the castle guard. the army consists of the general staff... |
the czech republic is a central european country, a member of the european union, the organisation for economic co-operation and development (oecd), organization for security and co-operation in europe (osce), the north atlantic treaty organization (nato), the united nations (and all of its main specialized agencies an... |
climbing is the activity of using one's hands, feet, or other parts of the body to ascend a steep topographical object that can range from the world's tallest mountains (e.g. the eight thousanders) to small boulders. climbing is done for locomotion, sporting recreation, for competition, and is also done in trades that ... |
the continuity irish republican army (continuity ira or cira), styling itself as the irish republican army (), is an irish republican paramilitary group that aims to bring about a united ireland. it claims to be a direct continuation of the original irish republican army and the national army of the irish republic that... |
congo may refer to: congo river, in central africa congo basin, the sedimentary basin of the river democratic republic of the congo, the larger country to the southeast, sometimes referred to as "congo-kinshasa" republic of the congo, the smaller country to the northwest, sometimes referred to as "congo-brazzaville" pl... |
the copenhagen interpretation is a collection of views about the meaning of quantum mechanics, stemming from the work of niels bohr, werner heisenberg, max born, and others. the term "copenhagen interpretation" was apparently coined by heisenberg during the 1950s to refer to ideas developed in the 1925–1927 period, glo... |
a customs union is generally defined as a type of trade bloc which is composed of a free trade area with a common external tariff. customs unions are established through trade pacts where the participant countries set up common external trade policy (in some cases they use different import quotas). common competition p... |
the council of europe (coe; , ) is an international organisation established in the wake of world war ii to uphold human rights, democracy and the rule of law in europe. founded in 1949, it brings together 46 member states, with a population of approximately 675 million; it operates with an annual budget of approximate... |
the council of the european union, often referred to in the treaties and other official documents simply as the council, and informally known as the council of ministers, is the third of the seven institutions of the european union (eu) as listed in the treaty on european union. it is one of two legislative bodies and ... |
continental europe or mainland europe is the contiguous mainland of europe, excluding its surrounding islands. it can also be referred to ambiguously as the european continent, – which can conversely mean the whole of europe – and, by some, simply as the continent. when eurasia is regarded as a single continent, europe... |
category theory is a general theory of mathematical structures and their relations that was introduced by samuel eilenberg and saunders mac lane in the middle of the 20th century in their foundational work on algebraic topology. category theory is used in almost all areas of mathematics. in particular, numerous constru... |
bradycardia (also sinus bradycardia) is a slow resting heart rate, commonly under 60 beats per minute (bpm) as determined by an electrocardiogram. it is considered to be a normal heart rate during sleep, in young and healthy or elderly adults, and in athletes. in some people, bradycardia below 60 bpm may be associated ... |
canada day (, ), formerly known as dominion day (), is the national day of canada. a federal statutory holiday, it celebrates the anniversary of canadian confederation which occurred on july 1, 1867, with the passing of the british north america act, 1867, when the three separate colonies of the united canadas, nova sc... |
the claudine series consists of four early novels by french authors colette and henry gauthier-villars, published 1900–1904. written in diary form, they describe the growth to maturity of a young girl, claudine. aged fifteen at the beginning of the first book, claudine at school, the series describes her education and ... |
coronary artery disease (cad), also called coronary heart disease (chd), ischemic heart disease (ihd), myocardial ischemia, or simply heart disease, involves the reduction of blood flow to the heart muscle due to build-up of atherosclerotic plaque in the arteries of the heart. it is the most common of the cardiovascula... |
caesium (iupac spelling; cesium in american english) is a chemical element with the symbol cs and atomic number 55. it is a soft, silvery-golden alkali metal with a melting point of , which makes it one of only five elemental metals that are liquid at or near room temperature. caesium has physical and chemical properti... |
a century is a period of 100 years. centuries are numbered ordinally in english and many other languages. the word century comes from the latin centum, meaning one hundred. century is sometimes abbreviated as c. a centennial or centenary is a hundredth anniversary, or a celebration of this, typically the remembrance of... |
cardiff (; ) is the capital and largest city of wales. cardiff had a population of 362,310 in 2021, and forms a principal area officially known as the city and county of cardiff (). the city is the eleventh-largest in the united kingdom. located in the south-east of wales and in the cardiff capital region, cardiff is t... |
charles john huffam dickens (; 7 february 1812 – 9 june 1870) was an english novelist and social critic who created some of the world's best-known fictional characters, and is regarded by many as the greatest novelist of the victorian era. his works enjoyed unprecedented popularity during his lifetime and, by the 20th ... |
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