In a chi-squared test for a 5 by 3 contingency table: (a) variables must be quantitative; (b) observed frequencies are compared with expected frequencies; (c) there are 15 degrees of freedom; (d) at...

In a chi-squared test for a 5 by 3 contingency table:

(a) variables must be quantitative;

(b) observed frequencies are compared with expected frequencies;

(c) there are 15 degrees of freedom;

(d) at least 12 cells must have expected values greater than 5;

(e) all the observed values must be greater than 1.