Tag: sample-size

111 Are large data sets inappropriate for hypothesis testing? 2010-09-09T18:21:30.200

65 Does an unbalanced sample matter when doing logistic regression? 2011-01-07T16:48:03.487

64 Rules of thumb for minimum sample size for multiple regression 2011-04-28T06:40:32.977

54 Is there a minimum sample size required for the t-test to be valid? 2012-09-25T23:42:35.733

39 Why is 600 out of 1000 more convincing than 6 out of 10? 2017-07-28T17:51:41.590

38 What can we say about population mean from a sample size of 1? 2015-06-18T15:21:14.583

37 How should one interpret the comparison of means from different sample sizes? 2012-06-29T01:24:40.470

34 What references should be cited to support using 30 as a large enough sample size? 2010-09-10T17:07:39.130

28 Why do political polls have such large sample sizes? 2014-02-24T22:23:05.567

24 Minimum sample size for PCA or FA when the main goal is to estimate only few components? 2012-12-13T06:37:08.683

23 Determining sample size necessary for bootstrap method / Proposed Method 2012-07-29T14:02:03.923

22 Sample size for logistic regression? 2012-04-07T07:38:43.767

21 How do I figure out what kind of distribution represents this data on ping response times? 2010-08-05T19:26:34.060

21 Showing that 100 measurements for 5 subjects provide much less information than 5 measurements for 100 subjects 2017-07-30T18:17:28.477

19 What is the minimum recommended number of groups for a random effects factor? 2012-09-20T01:56:50.007

19 Example of distribution where large sample size is necessary for central limit theorem 2013-06-15T02:57:20.160

17 Is there a statistical test to compare two samples of size 1 and 3? 2012-11-27T01:30:24.623

15 Minimum sample size for unpaired t-test 2012-01-21T22:24:12.050

15 What is the relationship between sample size and the influence of prior on posterior? 2012-06-13T16:18:52.793

15 Can I trust a significant result of a t-test if the sample size is small? 2017-03-06T23:13:39.737

14 What does it mean to make the sample size a random variable? 2017-01-17T03:45:53.143

13 Calculating required sample size, precision of variance estimate? 2011-02-09T00:48:49.097

13 Are short time series worth modelling? 2011-04-05T22:30:48.447

13 Why should/does(?) statistical sampling work for politics (e.g. Gallup)? 2016-11-06T22:18:18.413

12 How do you decide the sample size when polling a large population? 2010-07-19T23:21:35.430

12 How to determine the sample size needed for repeated measurement ANOVA? 2010-08-18T10:56:21.970

12 Complications of having a very small sample in a structural equation model 2011-05-01T17:28:38.533

12 Is dynamically increasing the sample size okay, if stated a priori? 2011-10-18T15:30:51.887

12 How to choose significance level for a large data set? 2012-02-03T19:17:31.703

12 Is the number 20 magic? 2013-04-18T13:40:34.510

12 Unequal sample sizes: When to call it quits 2014-01-19T02:26:12.990

12 Why is the sampling distribution of variance a chi-squared distribution? 2014-10-27T23:09:44.377

11 Sample size calculation for univariate logistic regression 2010-09-23T00:12:51.567

11 Sample size required to determine which of a set of advertisements has the highest click through rate 2011-03-10T14:52:20.337

11 What does it mean for a study to be over-powered? 2011-04-05T19:49:48.360

11 Bootstrap: the issue of overfitting 2014-08-16T19:37:27.403

11 Why is a large choice of K lowering my cross validation score? 2016-10-03T15:43:38.450

10 Alternative funnel plot, without using standard error (SE) 2011-02-22T01:12:00.607

10 When is Fisher's z-transform appropriate? 2013-06-28T11:48:01.897

10 Why is type I error not affected by different sample size - hypothesis testing? 2014-12-29T12:37:30.010

10 Sample size needed to estimate probability of "success" in Bernoulli trial 2015-01-06T23:41:42.597

10 Statistical significance of difference between distances 2016-11-20T18:48:55.417

9 How large should a sample be for a given estimation technique and parameters? 2010-07-20T11:43:25.013

9 Dynamic calculation of number of samples required to estimate the mean 2010-09-20T13:24:09.147

9 Parametric sample size calculation and non-parametric analysis 2010-09-27T13:29:01.003

9 Sample size formula for an F-test? 2011-05-22T19:34:27.523

9 How to verify extremely low error rates 2011-10-17T20:33:58.370

9 Effective Sample Size for posterior inference from MCMC sampling 2013-02-08T08:54:24.697

9 Two-sample comparison of proportions, sample size estimation: R vs Stata 2013-12-29T16:05:37.890

9 Does SurveyMonkey ignore the fact that you get a non-random sample? 2014-01-10T16:58:36.960

9 Power analysis from Bayesian point of view 2014-08-02T00:56:41.147

9 Is bootstrapping appropriate for this continuous data? 2014-08-02T21:53:10.027

9 How to sample when you don't know the distribution 2014-10-24T12:10:18.877

9 Is precision-based (i.e. inverse-variance) weighting integral to meta-analysis? 2015-06-06T00:54:09.300

9 Chance that bootstrap sample is exactly the same as the original sample 2017-01-23T01:50:29.490

9 Why should boostrap sample size equal the original sample size? 2017-02-23T22:24:12.007

9 If I want to have 95% chance that less than 1% objects are faulty, how many samples do I need? 2017-09-25T15:50:14.210

8 What's the accuracy of data obtained through a random sample? 2010-10-08T00:51:55.783

8 How to calculate sample size for simulation in order to assert some level of goodness in my results? 2010-12-02T23:24:13.180

8 Sample size for proportions in repeated measures 2010-12-20T22:24:03.600

8 How to use G Power 3 to calculate statistical power in mixed design ANOVA with unequal group sample sizes 2011-05-09T14:47:47.793

8 Power analysis for binomial data when the null hypothesis is that $p = 0$ 2012-10-02T02:19:44.180

8 Confidence intervals vs sample size? 2012-10-04T18:54:11.763

8 Mann-Whitney U test with unequal sample sizes 2012-10-13T20:39:52.047

8 Small and unbalanced sample sizes for two groups - what to do? 2012-12-11T13:29:48.713

8 Does a big difference in sample sizes together with a difference in variances matter for a t-test (or permutation test)? 2014-02-19T21:28:10.323

8 Relative size of p values at different sample sizes 2014-03-24T10:33:53.747

8 Consequences of exceeding sample size after determination of sample in power analysis 2016-01-06T09:11:57.183

7 How do you call this dynamic sample-size selection strategy? 2011-07-11T16:52:06.113

7 How to calculate sample size for comparing the area under the curve of two models? 2011-10-03T15:14:34.837

7 Small n: non-parametric or parametric tests? 2012-11-02T16:20:41.577

7 Is significance of the p-value reliable with extremely small sample sizes? 2013-01-09T00:27:33.120

7 Does it make sense to compute confidence intervals and to test hypotheses when data from whole population is available? 2013-09-01T09:26:14.797

7 Non-random small sample - What conclusions can I get? 2013-09-27T15:30:29.880

7 Can I do a t-test Power Analysis for Unequal Size Groups which Produces 2 Different Minimum n's? 2014-07-15T19:35:02.563

7 5 defectives rule of thumb 2014-10-23T14:50:40.317

7 How to calculate a sample size for validating correct/incorrectness of records in a data table? 2015-02-25T10:28:23.837

6 At least, how many times an experiment should be replicated? 2010-11-08T09:40:03.757

6 How to make representative sample set from a large overall dataset? 2011-02-20T09:54:18.693

6 Is there a method to find what is a good sample size for a VAR-model? 2011-03-02T13:58:38.210

6 How to report general precision in estimating correlations within a context of justifying sample size? 2011-10-14T05:13:17.107

6 Sample size for a variable number of answers 2011-11-29T19:24:31.820

6 What is the correct way to determine the amount of difference between two proportions? 2012-07-20T01:07:40.487

6 Increase sample size for significant correlation 2012-07-25T07:07:13.190

6 Power calculations, logistic regression with continuous exposure--cohort 2013-01-23T21:24:46.013

6 How do I calculate sample size so I can be confident that the sample mean approximates the population mean? 2013-03-26T07:15:23.727

6 Sample size with respect to prediction in classification and regression 2013-05-22T13:34:46.787

6 How many observations do you need within each level of a random factor to fit a random effect? 2013-07-28T00:27:27.750

6 Is a large control sample better than a balanced sample size when the treatment group is small? 2013-10-04T19:57:56.043

6 Comparing means with unequal variance and very different sample sizes 2013-11-03T06:22:09.433

6 Unbalanced distribution of sample size between groups in logistic regression: should one worry? 2013-12-10T17:12:20.113

6 Is Bayesian structural equation modelling better than maximum likelihood with smaller sample sizes? 2013-12-18T23:16:21.057

6 How do I estimate the average size of objects 2014-02-18T09:29:03.613

6 Sample size calculation for correlation study 2015-05-28T17:35:33.507

6 What is the expected absolute difference between sample and population mean? 2015-10-13T18:29:32.713

6 Number of Markov chain Monte Carlo Samples 2016-03-23T16:47:30.773

6 Sample size needed for Gaussian process classification 2016-04-06T18:33:29.520

6 Required sample size and degrees of freedom for a VAR 2016-07-24T18:53:37.187

5 Sampling with non-uniform costs 2010-11-18T16:48:34.630