Question
1. A researcher reports the following results for a chi-square test for independence: 2 (1) = 5.39, p < .05 ( V = .22). How
1. A researcher reports the following results for a chi-square test for independence: 2 (1) = 5.39, p < .05 ( V = .22). How many groups were observed?
a) 1
b) 2
c) 3
d) 4
2. If the expected frequencies are equal to observed frequencies for a chi-square test for independence, what do we conclude?
a) the degrees of freedom for the test are equal to 0
b) the test statistic value is equal to 0
c) the frequencies observed fit well with the frequencies expected
d) the test statistic value is equal to 0 and the frequencies observed fit well with the frequencies expected
3. A researcher computes a 2 X 3 chi-square test for independence. In this example, the degrees of freedom are 2.
True or False
4. To interpret a chi-square goodness-of-fit test, we compare observed and expected frequencies at each level of the categorical variable, and not across the levels of the categorical variable.
True or False
5. A chi-square goodness-of-fit test with five levels of a categorical variable will have four degrees of freedom.
True or False
6. Parametric tests are often called distribution-free tests.
True or False
7. We compute the frequency expected in each category using known ______ stated in the null hypothesis.
a) hypothesis tests
b) proportions
c) variances
d) effect sizes
8. Many nonparametric tests are called ______ because they make no assumptions regarding the shape of the distribution in the population.
a) parametric tests
b) skewed-distribution tests
c) significance-free tests
d) distribution-free tests
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