Navigation Links
Chi-square test


A chi-square test is any statistical hypothesis test in which the test statistic has a chi-square distribution if the null hypothesis is true. These include:

  • Pearson's chi-square test
  • Some likelihood-ratio tests are approximately chi-square tests when the sample-size is large. They are widely used in logistic regression. Other likelihood-ratio tests cannot be regarded as even approximately chi-square tests; e.g., F-tests in the analysis of variance and t-tests are likelihood-ratio tests, but the test statistic does not have a chi-square distribution under the null hypothesis.
  • Yates' chi-square test, or Yates' correction for continuity
  • Mantel-Haenszel chi-square test
  • linear-by-linear association chi-square test

All such tests involve a statistic of the form

where the word "expected" often does not denote an expected value, but an observable estimate of an expected value.



'"/>


(Date:12/15/2016)... DUBLIN , Dec 15, 2016 ... Research and Markets has announced ... to their offering. The report forecasts the global military ... 2016-2020. The report has been prepared based on an ... market landscape and its growth prospects over the coming years. The report ...
(Date:12/15/2016)... Dec. 14, 2016 "Increase in mobile transactions ... The mobile biometrics market is expected to grow from ... by 2022, at a CAGR of 29.3% between 2016 ... as the growing demand for smart devices, government initiatives, ... "Software component is expected to grow at a ...
(Date:12/8/2016)... , Dec. 8, 2016  Singulex, Inc., the ... Counting technology, entered into a license and supply agreement ... science. The agreement provides Singulex access to Thermo Scientific ... Europe is used to diagnose systemic bacterial ... States to aid in assessing the risk ...
Breaking Biology News(10 mins):
Other biology definition