Chi Square Test Table Degrees Of Freedom. To find probability for given degrees of freedom read across the below row until you find the. Chi square 3 418.
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. The table below can help you find a p value the top row when you know the degrees of freedom df the left column and the chi square value the values in the table. But it may not be immediately clear why this is the correct number of degrees of freedom.
For two sided tests the test statistic is compared with values from both the table for the upper tail critical values and the table for the lower tail critical values.
The chi square distribution is a special case of the gamma distribution and is one of the most widely used probability distributions in inferential statistics notably. But it may not be immediately clear why this is the correct number of degrees of freedom. Check out this post for how we calculated this next we can find the critical value for the test in the chi square distribution table. The table below can help you find a p value the top row when you know the degrees of freedom df the left column and the chi square value the values in the table.
