Friedman Test Critical Values. Define null and alternative hypotheses figure 2. Friedman test jump to.
To illustrate the friedman rank test return to the fast food chain study from section 11 2 in which six raters blocks evaluated four restaurants groups. Reject the null hypothesis if the calculated f value is larger than the fm critical value. K 3 k 4 k 5 k 6.
Calculate degrees of freedom df k 1 where k number of groups df 3 1 2 4.
The ranks of the scores for each person were then calculated and the friedman statistic q was calculated to be 1 79 using the above formula. Define null and alternative hypotheses figure 2. Step 7 determine the critical value of f by looking at the table of critical values for friedman s test f k 3 n 12 α 05 8 67 step 8 compare the obtained f and the critical f values to determine whether to retain or reject the null hypothesis. The statistic results of this test are a friedman χ 2 equal to 49 56 seven degrees of freedom and a p value of 1 76e 08.
