i. The chi-square goodness-of-fit test is appropriate for nominal and ordinal levels of data. ii. Chi-square test statistic used in a goodness-of-fit test has k - 1 degrees of freedom.
iii. The chi-square goodness-of-fit test can be applied if there are equal or unequal expected frequencies.
A) (i), (ii), and (iii) are all correct statements.
B) (i) and (ii) are correct statements but not (iii).
C) (i) and (iii) are correct statements but not (ii).
D) (ii) and (iii) are correct statements but not (i).
E) (i), (ii), and (iii) are all false statements.

Question

Quizplus · Accepted Answer

(i) is true because the chi-square goodness-of-fit test is appropriate for nominal and ordinal levels of data as it compares observed data to expected frequencies.
(ii) is true because the degree of freedom for a goodness-of-fit test is k -1, where k is the number of categories being tested.
(iii) is true because the chi-square goodness-of-fit test can be applied regardless of whether the expected frequencies are equal or unequal.

I the Chi-Square Goodness-Of-Fit Test Is Appropriate for Nominal and Ordinal