Tag: p-value

198 What is the meaning of p values and t values in statistical tests? 2010-07-19T19:28:44.903

89 Is this really how p-values work? Can a million research papers per year be based on pure randomness? 2015-07-19T10:25:05.680

87 Why are p-values uniformly distributed under the null hypothesis? 2011-05-10T18:26:26.630

86 How much do we know about p-hacking "in the wild"? 2016-03-09T13:14:57.287

82 ASA discusses limitations of $p$-values - what are the alternatives? 2016-03-08T08:32:23.927

74 Regarding p-values, why 1% and 5%? Why not 6% or 10%? 2013-04-10T10:20:50.907

69 A psychology journal banned p-values and confidence intervals; is it indeed wise to stop using them? 2015-02-25T19:01:23.347

62 Is this the solution to the p-value problem? 2016-03-31T22:14:42.130

61 References containing arguments against null hypothesis significance testing? 2011-05-08T16:09:04.040

61 What is a good, convincing example in which p-values are useful? 2016-03-11T11:44:59.917

57 Why does collecting data until obtaining a significant result increase the Type I error rate? 2017-10-26T17:29:07.963

55 When to use Fisher and Neyman-Pearson framework? 2012-02-20T11:02:11.077

53 Explain the xkcd jelly bean comic: What makes it funny? 2014-02-27T00:34:29.917

50 How should tiny $p$-values be reported? (and why does R put a minimum on 2.22e-16?) 2013-12-07T07:06:44.977

48 Is the "hybrid" between Fisher and Neyman-Pearson approaches to statistical testing really an "incoherent mishmash"? 2014-08-21T12:54:28.113

48 Cumming (2008) claims that distribution of p-values obtained in replications depends only on the original p-value. How can it be true? 2016-12-07T21:06:30.123

42 Correct spelling (capitalization, italicization, hyphenation) of "p-value"? 2010-07-28T04:08:23.973

41 How to obtain the p-value (check significance) of an effect in a lme4 mixed model? 2012-02-16T19:02:04.460

41 Why is "statistically significant" not enough? 2013-12-11T04:43:39.983

40 Why do people use p-values instead of computing probability of the model given data? 2010-12-17T10:36:49.853

37 When combining p-values, why not just averaging? 2013-12-04T23:11:57.667

34 Effect size as the hypothesis for significance testing 2012-02-24T16:46:03.667

33 Why is it bad to teach students that p-values are the probability that findings are due to chance? 2011-10-13T02:55:04.467

33 Understanding p-value 2012-11-30T13:14:01.770

32 Manually Calculating P value from t-value in t-test 2012-12-05T01:51:06.733

32 Is the exact value of a 'p-value' meaningless? 2014-04-24T05:58:32.740

32 Is p-value essentially useless and dangerous to use? 2015-01-25T20:01:17.033

32 Is p-value a point estimate? 2015-11-13T12:56:36.810

31 Interpretation of p-value in hypothesis testing 2013-01-02T22:57:41.403

29 What is the effect of having correlated predictors in a multiple regression model? 2014-02-11T22:23:12.550

28 Accommodating entrenched views of p-values 2011-02-12T17:12:53.863

28 How should an individual researcher think about the false discovery rate? 2015-04-28T00:52:23.010

27 Why are lower p-values not more evidence against the null? Arguments from Johansson 2011 2013-07-06T07:45:59.513

26 What causes the discontinuity in the distribution of published p-values at p < .05? 2012-10-01T17:47:18.610

26 Are smaller p-values more convincing? 2015-02-14T18:35:41.007

26 The abundance of P values in absence of a hypothesis 2015-03-19T21:57:48.997

25 Ziliak (2011) opposes the use of p-values and mentions some alternatives; what are they? 2011-11-03T18:09:19.700

25 Origin of "5$\sigma$" threshold for accepting evidence in particle physics? 2012-07-03T19:45:43.157

24 Is rejecting the hypothesis using p-value equivalent to hypothesis not belonging to the confidence interval? 2015-08-28T07:20:33.240

22 Computing p-value using bootstrap with R 2012-01-07T04:45:25.230

20 Difference between the assumptions underlying a correlation and a regression slope tests of significance 2017-01-19T22:36:24.003

19 Why do linear regression and ANOVA give different $p$-value in case of considering interaction between variable? 2012-05-22T15:44:22.403

19 Comparing and contrasting, p-values, significance levels and type I error 2012-08-01T02:33:55.363

19 Stouffer's Z-score method: what if we sum $z^2$ instead of $z$? 2013-08-01T22:07:17.087

19 finding p-value in pearson correlation in R 2015-05-25T19:20:00.813

18 Is Benjamini-Hochberg correction more conservative as the number of comparisons increases? 2012-01-16T23:01:18.000

18 Is a p-value of 0.04993 enough to reject null hypothesis? 2013-06-04T09:21:32.970

17 What sense does it make to compare p-values to each other? 2012-01-20T21:03:53.123

17 Can a statistical test return a p-value of zero? 2014-03-18T20:10:50.533

17 Confusion with false discovery rate and multiple testing (on Colquhoun 2014) 2015-03-25T13:10:12.013

16 What is the relationship between R-squared and p-value in a regression? 2013-02-20T17:50:06.427

16 High variance of the distribution of p-values (an argument in Taleb 2016) 2016-06-27T19:17:47.763

15 Explaining two-tailed tests 2011-12-01T04:16:14.693

15 Does $r$-squared have a $p$-value? 2014-08-12T16:49:31.203

14 Getting p-values for "multinom" in R (nnet package) 2013-07-03T12:47:18.080

14 Is p=5.0% significant? 2013-12-16T20:29:43.090

14 Is it wrong to refer to results as being "highly significant"? 2014-07-11T18:28:02.197

14 How to respond to reviewers asking for p-values in bayesian multilevel model? 2015-04-28T09:11:02.593

14 A/B tests: z-test vs t-test vs chi square vs fisher exact test 2015-10-27T12:44:48.133

13 sample size too large? 2014-11-27T19:05:02.280

13 P-value in a two-tail test with asymmetric null distribution 2015-03-03T12:51:34.787

13 Non-uniform distribution of p-values when simulating binomial tests under the null hypothesis 2015-05-20T20:15:41.150

13 Misunderstanding a P-value? 2015-08-09T05:51:13.760

13 Is it wrong to refer to results as "nearly" or "somewhat" significant? 2015-09-17T14:15:43.950

13 Are effect sizes really superior to p-values? 2017-08-17T19:00:50.077

12 Interpreting logistic regression output in R 2011-05-04T14:49:20.663

12 How to compute the probability associated with absurdly large Z-scores? 2011-08-01T00:52:46.313

12 Help me understand $p$-values in Bayesian glm 2012-07-02T04:40:54.133

12 Can p-values for Pearson's correlation test be computed just from correlation coefficient and sample size? 2013-06-06T06:02:16.183

12 Confusion over lmer and p-values: how do p-values from memisc package compare to the MCMC ones? 2013-09-02T19:19:44.027

12 If the distribution of test statistic is bimodal, does p-value mean anything? 2014-03-19T15:37:37.743

12 P-values equal to 0 in permutation test 2014-07-24T13:53:18.353

12 Palantir's Asian discrimination case: how were the probabilities computed? 2016-09-27T03:07:55.343

12 Why we reject the null hypothesis at the 0.05 level and not the 0.5 level (as we do in the Classification) 2017-07-12T07:04:40.037

11 Statistical test for positive and negative predictive value 2011-01-17T11:25:59.540

11 Calculating p-value from an arbitrary distribution 2011-02-06T18:13:50.133

11 Examples of studies using p < 0.001, p < 0.0001 or even lower p-values? 2011-03-21T21:39:32.833

11 What is the difference between wilcox.test and coin::wilcox_test in R? 2012-06-30T00:51:58.897

11 Why applying model selection using AIC gives me non-significant p-values for the variables 2012-08-30T08:44:14.677

11 Paper on performing hypothesis tests based on outcome of another test 2013-10-09T09:51:15.767

11 Fisher's exact test gives non-uniform p-values 2015-07-21T19:43:06.320

10 What is the difference between Z-scores and p-values? 2011-03-18T23:33:45.757

10 "Accept null hypothesis" or "fail to reject the null hypothesis"? 2013-06-02T16:52:08.493

10 P value for interaction term in mixed effects models using lme4 2014-04-23T16:36:33.630

10 p-value subtlety: greater-equal vs. greater 2014-11-26T07:31:01.273

10 Simple linear regression, p-values and the AIC 2016-06-13T12:43:50.360

10 How to rigorously justify chosen false-positive/false-negative error rates and underlying cost ratio? 2018-02-17T23:18:52.687

9 Unknown p-value calculation 2013-01-18T02:05:36.133

9 In R how to compute the p-value for area under ROC 2013-11-09T14:44:38.107

9 How can I pool bootstrapped p-values across multiply imputed data sets? 2013-12-02T12:30:27.220

9 Why are 0.05 < p < 0.95 results called false positives? 2014-02-27T20:32:46.417

9 How to test an interaction effect with a non-parametric test (e.g. a permutation test)? 2016-05-19T07:48:59.200

9 Using p-value to compute the probability of hypothesis being true; what else is needed? 2017-04-24T13:47:20.083

8 Adjusting the p-value for adaptive sequential analysis (for chi square test)? 2012-02-01T09:39:14.350

8 Can a -2 Log likelihood be calculated with only one model? 2012-03-15T16:55:21.660

8 How is $\chi^2$ value converted to p-value? 2012-03-22T22:53:46.763

8 p-values of Mann-Whitney U test identical for raw and log-transformed data 2013-03-21T07:15:51.173

8 What is the benefit of using permutation tests? 2013-07-10T03:49:45.433

8 How to get pooled p-values on tests done in multiple imputed datasets? 2013-09-04T01:06:26.173