I the Number of Degrees of Freedom Appropriate for the Chi-Square

question 117

Multiple Choice

i. The number of degrees of freedom appropriate for the chi-square goodness-of-fit test is the number of categories minus 2. ii. If there are extremely large differences between observed and expected frequencies the correct decision is to reject H₀.
iii. There are 2 degrees of freedom for a contingency table classifying three levels of income with each gender.

• 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.

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