Table Chi Square Critical Value. Critical values are important in both hypothesis tests and confidence intervals. Since our test statistic is greater than our critical value we reject the null hypothesis.
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. For hypothesis tests a critical value tells us the boundary of how extreme a test statistic we need to reject the null hypothesis. The distribution table shows the critical values for chi squared probailities.
The use of a chi square table that we will examine is to determine a critical value.
Chi squared distribution table. 995 99 975 95 9 1 05 025 01 1 0 00 0 00 0 00 0 00 0 02 2 71 3 84 5 02 6 63 2 0 01 0 02 0 05 0 10 0 21 4 61 5 99 7 38 9 21. Critical chi square value calculator. Chi square probabilities the areas given across the top are the areas to the right of the critical value.