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orgrctera
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beir_cqadupstack_stats

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0ae70ba9-7d76-4ed7-98a7-ee03ce11b49b
Calculate Standard deviation from mean and confidence interval (95%) in R
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89633
test
819f4afb-e330-4225-9295-0022660e69ed
Sanity check question about correlation between log-normal random variables
[{"id": "93356", "score": 1}]
45961
test
a5d6d3f5-026e-44e1-b54a-0340b3f307b9
Dimensionality reduction using self-organizing map
[{"id": "18383", "score": 1}]
22774
test
f40714f2-37d4-4f47-bc7d-aed25322d552
How to find percentiles of a Normal distribution?
[{"id": "35440", "score": 1}]
8033
test
4907c736-00b7-4738-9507-57559d2bb96c
What is a lift chart?
[{"id": "17119", "score": 1}]
31150
test
9eac51ae-59ab-4c83-aad6-65b07ba3ee10
Prerequisites for AIC model comparison
[{"id": "83147", "score": 1}]
48714
test
71cf7238-61dd-4206-979b-9abf56c7c0f0
Correlation between discrete and continuous variables
[{"id": "63901", "score": 1}]
62741
test
b4feca2f-d95f-4c9d-904a-8480de335d57
Stepwise regression in R – Critical p-value
[{"id": "109789", "score": 1}]
97257
test
10e54dc6-2877-40ba-a1dc-5e0471ca80e7
Standard deviation of binned observations
[{"id": "71169", "score": 1}, {"id": "90022", "score": 1}, {"id": "70479", "score": 1}]
60256
test
a844d7cb-5a12-416a-81f1-6c9ab2f9ae77
How to specify the random term in lme, lmer and aov?
[{"id": "13433", "score": 1}]
13475
test
d4326760-7d31-41f6-bd49-f9629fddf508
Goodness of fit test for a mixture in R
[{"id": "28850", "score": 1}]
28873
test
4e8d5dfd-b50c-4149-bbe7-e38199d68ccb
What are the mathematics I need to learn, before I start research in data mining
[{"id": "68793", "score": 1}]
103164
test
9be918a6-2fd8-49fe-898d-226807578554
Meaning of Likelihood in layman's terms
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66094
test
3281f7dc-3c6c-4d77-91f8-1b96c12de1df
Comparison between multi-level modelling and generalized estimating equation
[{"id": "16390", "score": 1}]
32808
test
4393e9bc-4383-42ef-aafc-99162dbc4032
Is Marliyn vos Savant correct about the 2/3 odds in her version of the Monty Hall problem?
[{"id": "373", "score": 1}, {"id": "97315", "score": 1}]
30514
test
c21cc020-9122-4c5c-9a0e-3db7bc61f440
Segmented nonlinear regression in R?
[{"id": "7527", "score": 1}]
12469
test
bafc01b5-e416-4e01-8475-1eb193de38d0
Do we need a global test before post hoc tests?
[{"id": "97365", "score": 1}]
9751
test
4a87a0e5-92ab-4c3e-b02b-b1f819628f9a
Statistical test for a random die roll?
[{"id": "3194", "score": 1}]
80555
test
d2256906-a5c1-40e6-8c12-0e9791ea4f12
Probability of observing value EQUAL to +2 SD in a standard normal dist with parameters N(0,1)
[{"id": "17000", "score": 1}]
84197
test
fb1f9a56-760a-4e3d-8615-4993b077d144
Sum of squared errors
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94360
test
99a69953-7815-47cb-a59c-ee3d2300ba89
Is there a simple rule for interpretation of Interactions (and their directions) in binary logistic regression?
[{"id": "57031", "score": 1}, {"id": "57036", "score": 1}]
57074
test
ce3b6f4a-78ca-46aa-8d3e-8f60d86f056a
What does "unbiasedness" mean?
[{"id": "60297", "score": 1}]
16008
test
3d84c684-f285-4f3c-a767-eb6052320edf
What does this test mean?
[{"id": "87599", "score": 1}]
87601
test
5a084de5-ce2e-43ce-bb7b-375827a003c4
Strategy for deciding appropriate model for count data
[{"id": "50699", "score": 1}]
7535
test
fe5e87f7-b464-4b3f-a0ca-387e9411c8ce
Correlation of categorical and interval variables
[{"id": "60877", "score": 1}]
91510
test
804673d3-e494-41d2-9c00-7d32a74b4fe6
Repeated ANOVA unbalanced data
[{"id": "78910", "score": 1}]
78928
test
37bbc282-5d6c-44a9-bf21-915e505a335b
What is a good algorithm for estimating the median of a huge read-once data set?
[{"id": "20568", "score": 1}]
346
test
935e2f3b-5f24-420c-9d6f-72b8dc0dd657
Basics of forecasting
[{"id": "86354", "score": 1}]
86357
test
f34aeecf-f8a1-4da1-98ea-9aa46cf90095
Significant predictor loses significance when second non-significant predictor is entered (log regression)
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28842
test
0756df7f-59f5-4801-9cbd-a386f291f85b
rescale a vector x to lie between arguments LOWER and UPPER in R
[{"id": "70801", "score": 1}, {"id": "79706", "score": 1}]
88097
test
71062520-9ad2-4e24-9b34-524cf945db77
Geometric mean of uniform variables
[{"id": "89946", "score": 1}]
89949
test
b16d930b-a3b7-4ff9-a484-275ab50842c1
Markov chain getting stuck due to insufficient data samples
[{"id": "60254", "score": 1}]
60257
test
2870371d-901e-401e-b369-7152f9de5b04
Do I need to use t-test?
[{"id": "15021", "score": 1}]
15662
test
64acbaf3-c272-47b5-ae77-57c84cac7c12
Computing and plotting a correlogram
[{"id": "29031", "score": 1}]
28942
test
2838870e-e509-45fb-bf55-89f1ac5ac30c
Ordinal item on Likert scale as dependent variable in regression
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76398
test
616a20ab-3a5d-42e7-86ca-99f789717ab9
Assessing error of a spatial interpolation algorithm
[{"id": "16313", "score": 1}]
16287
test
a7587c6e-6675-4887-9f9b-acd97f590fb4
Logit versus Probit
[{"id": "20523", "score": 1}, {"id": "73043", "score": 1}]
47746
test
ee40e891-b0c8-40f6-9002-75c922c93995
How to use CDF and PDF statistics for analysis
[{"id": "94350", "score": 1}]
4810
test
505b1d0e-bbb8-42c2-b6d9-b3e633f8fe99
Difference between Cohen's d and Hedges' g for effect size metrics
[{"id": "66956", "score": 1}]
1850
test
1a09ba5c-2abb-4c83-8ad9-a858f225161e
How do I interpret the results of a Breusch–Pagan test?
[{"id": "19083", "score": 1}]
8107
test
b3526f24-ef3d-4a47-a839-63d60fd9e635
How to analyze data with more than one associated categorical dependent variables?
[{"id": "56997", "score": 1}]
57214
test
164bd1b4-d672-4b72-90e1-fd53525168d6
Why does the Lasso provide Variable Selection?
[{"id": "81882", "score": 1}, {"id": "96046", "score": 1}]
74542
test
dc648eb6-6505-4e89-94cf-8f40a271bb16
How to tell if data is "clustered" enough for clustering algorithms to produce meaningful results?
[{"id": "35981", "score": 1}, {"id": "93488", "score": 1}]
11691
test
c5de7a08-534a-436d-946b-647636c8d0bd
How to Interpret a negative log linear regression coefficient?
[{"id": "64348", "score": 1}]
64343
test
f45f8e07-8682-4fdc-abce-d54ce1969dd8
Testing equality of variances without the data, just from the variances and the mean
[{"id": "77631", "score": 1}]
77099
test
04c92184-b8d7-47ad-8f45-50b384329881
Why does the correlation coefficient between X and X-Y random variables tend to be 0.7
[{"id": "91799", "score": 1}]
51456
test
8e774588-8017-4fa5-b5d2-c22dd42a4cd2
How to interpret regression coefficients for a variable with takes positive and negative values?
[{"id": "25182", "score": 1}]
25094
test
6037f1c2-53f8-4763-9011-3c424385deca
Why would adjusting in a model change the direction of an effect?
[{"id": "67430", "score": 1}]
89472
test
ee24af5d-1f11-470e-95c7-a6a7d5e4fd01
Interpreting estimates from generalized models in R
[{"id": "11096", "score": 1}, {"id": "87553", "score": 1}, {"id": "89335", "score": 1}]
89038
test
23c96b88-3d20-42f0-bbdb-1e3f72e78ae6
"Accept null hypothesis" or "fail to reject the null hypothesis"?
[{"id": "106309", "score": 1}, {"id": "89741", "score": 1}, {"id": "85903", "score": 1}]
60670
test
f94a547e-b849-4b61-80b6-c38f4aa97c1f
Boxplot for several distributions?
[{"id": "81451", "score": 1}]
13875
test
8c44a322-46c0-4a2e-b71b-a8a310d7dd9a
How to plot ROC curves in multiclass classification?
[{"id": "50547", "score": 1}, {"id": "71700", "score": 1}]
2151
test
34c3efe3-2aa2-4855-97f8-53770b127093
Interpreting Gaussian probabilities greater than 1
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9427
test
b9c42f2d-4a9a-4a66-b2e2-88f55df96862
How are the standard errors of coefficients calculated in a regression?
[{"id": "87367", "score": 1}]
44838
test
cac91d2d-e9cd-4689-86e9-9c0b1eae980a
How to simulate data that satisfy specific constraints such as having specific mean and standard deviation?
[{"id": "94716", "score": 1}]
30303
test
e9e1efc6-8394-4567-8a1c-f2be62e43413
Log and natural log
[{"id": "109669", "score": 1}]
102744
test
02a80e7f-870e-4c35-ade5-e6e0464433a6
Find the distribution of w
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46217
test
99a2bbeb-db4a-48c3-a7d9-ba24e4f79909
A constant as an admissible estimator
[{"id": "62113", "score": 1}]
48302
test
c4f6290f-63d9-4713-b22b-d35930074900
Do Bayesians believe in Fixed Effect Models?
[{"id": "83731", "score": 1}]
113194
test
346cc50a-51e6-4d76-9665-62b5adf111bf
How to interpret regression coefficients when response was transformed by the 4th root?
[{"id": "92476", "score": 1}, {"id": "99699", "score": 1}]
35982
test
aae87410-ef88-4de2-942e-1583431d6230
How can I efficiently model the sum of Bernoulli random variables?
[{"id": "71019", "score": 1}]
5347
test
e87238a7-6651-4fd6-a54e-ec34418e9887
Determining an optimum and distribution range for a given species abundance vs an environmental gradient data
[{"id": "68852", "score": 1}]
67243
test
27fcb394-6e45-4b6a-b2dc-96a6d35d82ef
Why continue to teach and use hypothesis testing?
[{"id": "72686", "score": 1}]
6966
test
fb49747b-ebaa-4330-bd52-a135c77050ce
When are two normally distributed random variables jointly bivariate normal?
[{"id": "30159", "score": 1}, {"id": "37829", "score": 1}, {"id": "81469", "score": 1}]
33354
test
3641b760-84e5-4caf-ada5-d09b7ecf7843
Why is coefficient of determination used to assess fit of a least squares line?
[{"id": "65848", "score": 1}]
65779
test
53743285-194f-45e5-bc17-86cfc6b1fda3
chisq.test in R doesn't produce same answer as by-hand
[{"id": "85861", "score": 1}]
96835
test
8cc01001-65b3-40e9-925b-5e70e26ce366
How to correlate ordinal and nominal variables in SPSS?
[{"id": "80618", "score": 1}]
23938
test
31411792-e5f1-49d5-918b-ed0aec44ac8b
What are examples where a "naive bootstrap" fails?
[{"id": "38926", "score": 1}]
9664
test
c4c6187b-26e7-4968-a3f1-c285072b51af
How to compare two groups when one only has one data point?
[{"id": "44475", "score": 1}, {"id": "99121", "score": 1}]
67782
test
7c6b1d22-3a2b-4a13-81bc-e5aa344e2d92
Linear regression not fitting well
[{"id": "83777", "score": 1}]
83554
test
bca01376-d326-43eb-9aac-0c4d5dc1b510
Statistics and Probability interview questions
[{"id": "5465", "score": 1}, {"id": "106346", "score": 1}]
43020
test
d9cd7861-0e67-4dde-90fb-d96294b61c96
Reproduce a confidence interval of linear regression in Excel
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104029
test
0d68d708-cfa3-41e4-be1d-93cf975cc550
How to get SSE for predictions using SAS?
[{"id": "33056", "score": 1}]
32864
test
149825df-aadc-4789-8854-bb56b6443897
Computation of new standard deviation using old standard deviation after change in dataset
[{"id": "41197", "score": 1}]
24878
test
735b17fd-d165-489c-9d42-52869a48e9e4
Centering vs. Standarizing which one is better?
[{"id": "104409", "score": 1}]
104567
test
f2a57636-dfba-40ca-bd42-5653d54763e1
What, precisely, is a confidence interval?
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6652
test
17384b8d-b451-4ba5-8eea-7831e44122cd
Good econometrics textbooks?
[{"id": "64590", "score": 1}]
4612
test
6e69e8ac-cab1-4b96-ab97-1deb60b1596b
How can dummy variables are able to add in Stata?
[{"id": "70699", "score": 1}, {"id": "88094", "score": 1}]
96722
test
862ac4df-0a43-4310-b086-6a2ae8688403
Incremental or online or single pass or data stream clustering refers to the same thing?
[{"id": "22691", "score": 1}]
22439
test
b0ec00d3-0fb6-426b-85dd-2b6e12b8ddc6
Pearson r Interpretation
[{"id": "15593", "score": 1}]
37866
test
5f60eb18-443d-42dd-b795-e5fec82792e0
Meaning of probability notations $P(z;d,w)$ and $P(z|d,w)$
[{"id": "15510", "score": 1}, {"id": "30825", "score": 1}, {"id": "68150", "score": 1}]
10234
test
23db810e-3a45-4370-8392-0dd908f96688
Postive correlation but negative coefficient in regression
[{"id": "34151", "score": 1}, {"id": "92505", "score": 1}]
65446
test
c50afd8d-bc75-4317-87e4-d22458d53211
$\chi^2$ goodness of fit - how to compute expected counts when $\exists$ unknown parameters
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105545
test
fe23895d-fb5b-4b6a-9d4d-78466e644d21
When are Log scales appropriate?
[{"id": "48563", "score": 1}]
27951
test
6a907bc9-7694-40b9-97de-acb92abc1321
How to perform linear regression with categorical factors?
[{"id": "31690", "score": 1}, {"id": "36303", "score": 1}]
31958
test
2e332b8a-cd77-47d0-a90d-f02b9cc14657
R's lmer cheat-sheet
[{"id": "59076", "score": 1}]
13166
test
400f2435-8be5-4c2d-8d04-eebf1f402bc0
Significant interaction with non significant main effect
[{"id": "85940", "score": 1}, {"id": "90049", "score": 1}]
87805
test
eb4cc169-f73d-4db9-84b4-9b72e0c419a6
Continuous dependent variable with ordinal independent variable
[{"id": "113965", "score": 1}]
33413
test
6f16e1cd-2ad8-444d-9699-8d5213583209
"optimum" tree from random forests
[{"id": "72266", "score": 1}]
78329
test
9380a085-e373-4101-a0d7-d49f57549485
What does it mean for two variables to be uncorrelated? How is it possible for two variables to be strongly related but still uncorrelated
[{"id": "30156", "score": 1}, {"id": "48734", "score": 1}, {"id": "534", "score": 1}]
51907
test
5f87334d-2128-40aa-acdd-184863fecadc
Finding distribution function
[{"id": "102691", "score": 1}]
110997
test
245fc2e0-15f9-4219-ba98-8b3543acac71
How to fit data that looks like a gaussian?
[{"id": "70153", "score": 1}]
83022
test
ad984266-96f4-46a3-88c7-7fe3da2cbfd3
regression. sufficient dimension reduction
[{"id": "111824", "score": 1}]
111835
test
fe6e3fe1-b681-4529-9f50-0bb26a725844
Intuitive examples of importance sampling
[{"id": "82955", "score": 1}]
82947
test
d39242e4-2a67-413c-a4af-03b31dba8591
OLS in R with linear inequality constraints on coefficients
[{"id": "61733", "score": 1}]
64831
test
a0440b30-8abd-4e56-b205-dc47e43f8bea
Significance tests
[{"id": "72275", "score": 1}]
24911
test
47f25e9e-0ab4-41e3-9d25-79ae9366641c
AR(1) coefficient is correlation?
[{"id": "95305", "score": 1}]
68243
test
332aa8d7-b5e2-41e2-bc08-9296780bc469
Nonparametric test when variances are unequal
[{"id": "88644", "score": 1}]
101074
test
82e1c916-279a-4977-8334-bbffb7e7e347
Econometrics: Panel data without unit identifier
[{"id": "104139", "score": 1}]
104444
test
a75233a5-f3f4-419d-88a4-33e08c4a2d77
Where to find a large text corpus?
[{"id": "46929", "score": 1}]
18905
test