Tag: chi-squared

76 Given the power of computers these days, is there ever a reason to do a chi-squared test rather than Fisher's exact test? 2011-08-13T18:55:10.780

41 What is the relationship between a chi squared test and test of equal proportions? 2010-09-05T16:35:45.123

40 Is chi-squared always a one-sided test? 2012-02-06T14:48:19.933

28 How can I test the fairness of a d20? 2010-09-30T13:04:31.537

27 Warning in R - Chi-squared approximation may be incorrect 2014-01-07T12:00:20.197

25 Why is a likelihood-ratio test distributed chi-squared? 2013-03-20T15:49:32.283

21 Is this an appropriate method to test for seasonal effects in suicide count data? 2015-04-03T22:47:18.717

20 What is the difference between McNemar's test and the chi-squared test, and how do you know when to use each? 2013-11-18T13:37:40.397

19 What is the sum of squared t variates? 2011-01-17T03:34:38.283

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

18 sum of noncentral Chi-square random variables 2013-08-16T02:32:52.183

17 How to calculate the p-value of parameters for ARIMA model in R? 2011-03-28T09:19:01.760

17 How the Pearson's Chi Squared Test works 2011-12-08T09:45:00.957

17 How do I find values not given in (interpolate in) statistical tables? 2013-07-16T23:55:34.533

16 Why does chi-square testing use the expected count as the variance? 2011-08-25T08:39:35.600

15 pdf of the product of two independent random variables, normal and chi-square 2012-12-13T16:58:19.987

15 Impact of data-based bin boundaries on a chi-square goodness of fit test? 2013-10-04T01:48:35.417

14 Contingency tables: what tests to do and when? 2012-05-29T08:09:51.123

14 Why is chi square used when creating a confidence interval for the variance? 2013-11-13T12:22:33.907

14 Distribution of the convolution of squared normal and chi-squared variables? 2014-03-23T23:22:26.203

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

14 Using glm() as substitute for simple chi square test 2017-12-29T09:53:28.607

13 Applicability of chi-square test if many cells have frequencies less than 5 2012-09-04T08:49:59.573

12 How did Karl Pearson come up with the chi-squared statistic? 2014-05-14T01:43:16.133

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

12 Post-hoc test for chi-square goodness-of-fit test 2015-01-26T19:17:34.950

12 Test GLM model using null and model deviances 2015-03-10T17:43:40.453

12 At What Level is a $\chi^2$ test Mathematically Identical to a $z$-test of Proportions? 2015-09-21T03:00:15.067

11 How can I adapt ANOVA for binary data? 2010-07-19T19:24:12.187

11 What are the sharpest known tail bounds for $\chi_k^2$ distributed variables? 2010-11-23T10:12:46.490

11 Why does independence test use the chi-squared distribution? 2014-01-14T16:02:09.060

11 Expected value vs. most probable value (mode) 2016-08-14T14:29:35.573

10 Chi-square test for equality of distributions: how many zeroes does it tolerate? 2010-10-27T14:39:11.707

10 Why does the McNemar's test use chi-square and not the normal distribution? 2010-11-23T10:51:09.000

10 Order statistics (e.g., minimum) of infinite collection of chi-square variates? 2011-08-05T04:37:49.507

10 Confidence interval for chi-square 2012-02-08T10:37:13.860

10 Pearson's residuals 2012-12-09T10:00:11.147

10 The $z$-test vs the $\chi^2$-test for comparing the odds of catching a cold in 2 groups 2014-01-12T02:08:46.287

10 Distribution of the ratio of dependent chi-square random variables 2014-03-03T21:39:19.603

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

10 What distribution does Fisher's exact test assume? 2014-12-30T09:45:58.737

10 Comparing two histograms using Chi-Square distance 2015-11-29T12:34:16.053

10 Expectation of $\frac{X_1^4}{(X_1^2 + \cdots + X_d^2)^2}$ 2016-07-09T13:25:18.623

9 Multiple Chi-Squared Tests 2010-08-02T19:19:42.860

9 How to carry out multiple post-hoc chi-square tests on a 2 X 3 table? 2011-04-18T13:50:07.170

9 Distribution of inverse Wishart to a power? 2012-04-27T22:58:10.983

9 Strange way of calculating chi-squared in Excel vs R 2014-01-31T09:51:14.870

9 Understanding the Chi-squared test and the Chi-squared distribution 2014-06-23T22:51:49.190

9 How does Pearson's Chi Squared Statistic approximate a Chi Squared Distribution 2014-08-20T01:10:30.490

9 Relationship between gamma and chi-squared distribution 2014-10-11T08:52:31.937

9 What kind of feature selection can Chi square test be used for? 2015-05-14T15:41:32.957

9 What do you do if your degrees of freedom goes past the end of your tables? 2017-05-08T15:43:38.333

8 Can chi square be used to compare proportions? 2011-04-16T21:08:05.087

8 NaN p-value when using R's goodfit on binomial data 2011-04-27T19:10:24.630

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

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

8 Can you reproduce this chi-squared test result? 2012-10-08T10:13:18.993

8 Benjamini-Hochberg dependency assumptions justified? 2012-10-11T16:11:01.420

8 Tail inequality on sum of product of normal variables 2012-10-20T03:06:09.783

8 Comparison of entropy and distribution of bytes in compressed/encrypted data 2013-02-02T16:24:03.600

8 How can I test the same categorical variable across two populations? 2013-03-07T16:18:13.510

8 Survey design chi square 2013-07-16T15:26:09.713

8 Deviance vs Pearson goodness-of-fit 2013-11-24T17:05:52.730

8 Test of independence vs test of homogeneity 2013-11-25T15:53:28.233

8 Chi-squared test with 0 expected values 2013-11-30T00:32:31.350

8 Testing a 2x2 contingency table: male/female, employed/unemployed 2014-01-11T12:03:12.827

8 Test for difference between 2 empirical discrete distributions 2014-03-04T19:01:54.363

8 chi squared test or Z test? 2014-07-20T03:00:31.300

8 Transformation Chi-squared to Normal distribution 2014-11-26T22:57:51.847

8 How to interpret the residual colors on a mosaic plot? 2015-04-23T03:54:58.133

8 Alternatives for chi-squared test for independence for tables more than 2 x 2 2015-06-28T16:24:57.293

8 G-test vs Pearson's chi-squared test 2015-08-28T07:37:29.150

8 Which test for cross table analysis: Boschloo or Barnard? 2015-09-02T20:36:30.090

8 Two Sample chi squared test 2016-01-20T18:37:40.390

8 Test logistic regression model using residual deviance and degrees of freedom 2016-11-30T22:33:11.760

8 What is the distribution of the sum of squared chi-square random variables? 2016-12-26T21:22:29.000

7 Has anyone used the Marascuilo procedure for comparing multiple proportions? 2010-10-12T16:53:32.110

7 Yates continuity correction for 2 x 2 contingency tables 2010-11-16T01:27:37.710

7 Continuity correction for Pearson and McNemar's chi-square test 2011-01-22T03:43:13.820

7 What does inverse-chi-square in Fisher method (classifying) exactly do? 2011-05-04T19:24:03.320

7 Statistics for gambling machine validation 2011-05-24T18:19:51.373

7 Degrees of freedom for Chi-squared test 2011-08-18T11:22:08.313

7 How can I compute Pearson's $\chi^2$ test statistic for lack of fit on a logistic regression model in R? 2012-06-01T18:18:19.507

7 How can I show that for any $a > 0$, $\lim_{n\to \infty}P \left(\sum_{i=1}^n X_i^2\leq a\right)=0$ 2012-08-05T05:00:18.370

7 $\chi^2$ test on user preferences 2012-08-06T05:26:50.763

7 How to compare observed vs. expected events? 2012-08-26T07:24:50.057

7 Using $\chi^2$ to compare two Markov transition matrices 2012-09-26T08:40:54.860

7 Comparison of frequency tables over time 2012-11-05T21:39:06.403

7 Which are differences between the hypergeometric distribution and chi-square distribution 2013-02-28T09:09:17.320

7 Rules to apply Monte Carlo simulation of p-values for chi-squared test 2013-06-24T07:50:14.970

7 Is the beta distribution really better than the normal distribution for testing the difference of two proportions? 2014-06-30T11:26:01.410

7 Combining $\chi^{2}$ tests 2014-07-14T15:20:49.113

7 How to to find and evaluate optimal discretization for continuous variable with $\chi^2$ criterion? 2015-04-23T11:23:13.377

7 Estimate of parameter of exponential distribution with binned data 2016-06-20T07:55:07.417

7 R squared and higher order polynomial regression 2016-06-20T15:25:40.503

7 How is the $ \chi^2 $ distribution defined at 0 for various degrees of freedom? 2016-07-12T19:40:14.490

7 How do I perform a follow up on a chi-squared table 3x3 or larger? 2016-12-09T17:59:33.320

7 How is a Chi-square distribution a gamma distribution if it only has one parameter? 2016-12-12T06:32:41.950

6 Proving that the squares of normal rv's is Chi-square distributed 2011-01-09T20:08:12.767