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Mar
Degrees Of Freedom Chi Square Table. In your case your are actually cross-classifying two variables period and country in a 2-by-3 table. Critical value of χ 2 from χ 2 -distribution table represents the rejection area of distribution. The degrees of freedom for the chi-square are calculated using the following formula. Its generally represented by χ 2e.
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 005. To find probability for given degrees of freedom read across the below row until you find the next smallest number. Take the number of rows minus one and multiply that number by the number of columns minus one. If the observed chi-square test statistic is greater than the critical value the null hypothesis can be rejected. 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 first row represents the probability values and the first column represent the degrees of freedom.
The degrees of freedom for the chi-square are calculated using the following formula.
How to use chi squared table. How to use chi squared table. See Chi-Square Test page for more details. In your case your are actually cross-classifying two variables period and country in a 2-by-3 table. To calculate the degrees of freedom for a chi-square test first create a contingency table and then determine the number of rows and columns that are in the chi-square test. Give the degrees of freedom for the chi-square test based on the two-way table.