i. Small differences between observed and expected frequencies are due to chance. ii. The chi-square distribution with large degrees of freedom approaches a normal distribution.
iii. The chi-square distribution is positively skewed.
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: (i) is a basic principle of chi-square tests, (ii) is a property of the chi-square distribution as degrees of freedom increase, and (iii) describes the shape of the chi-square distribution.

I Small Differences Between Observed and Expected Frequencies Are Due