<prompt> In a 4 x 5 table for Chi-square test, what is the degree of freedom?2016129  <response>: Ans. c Used to test ignificanc of association between two quantititve dataRef : K. Park 23rd ed. 852 DEGREE OF FREEDOM: it is the no. of observations in a dataset that can freely vary once the parameters have been estimated. It is used in chi-square test and t-test. DOF: c-1 r-1, where c is no. of columns and r is no. of rows. In the given question there are 4 columns and 5 rows. Therefore 4-1 5-1 gives 12. 