i. The computed value of chi-square is always positive because the difference between the observed frequencies and the expected frequencies are squared. ii. The shape of the chi-square distribution changes for each number of degrees of freedom.
iii. The minimum computed value of chi-square is zero.
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

All three statements are correct. The chi-square value is always positive due to squaring the differences between observed and expected frequencies, its distribution shape changes with degrees of freedom, and the minimum value is zero, indicating no difference between observed and expected frequencies.

I the Computed Value of Chi-Square Is Always Positive Because