Chi Squared Test Graph. This is the usual table we see in textbooks. Calculating a chi square test statistic.
When you conduct each of these tests you ll end up with a test statistic x 2. Note that the chi square test is more commonly used in a very different situation to analyze a contingency table. Interpret all statistics and graphs for chi square goodness of fit test learn more about minitab find definitions and interpretation guidance for every statistic and graph that is provided with the chi square goodness of fit test.
See a table of selected percentiles of the chi square distribution computed using the javascript calculation engine behind this page.
The significance level α is demonstrated with the graph below which shows a chi square distribution with 3 degrees of freedom for a two sided test at significance level α 0 05. If the test statistic is greater than the upper tail critical value or less than the lower tail critical value we reject the null hypothesis. Chi square goodness of fit test. When you conduct each of these tests you ll end up with a test statistic x 2.