1.State three ways that nonparametric tests differ from parametric tests.

2. A chi-square test is used when we compare frequencies for data on what scale of measurement?

3. How many factors are observed using a chi-square goodness-of-fit test?

4. Define the following terms:

a. Frequency observed (fo):

b. Frequency expected (fe):

6. Write the formula for finding the expected frequency for a chi-square goodness-of-fit test.

13. Based on the scale of measurement for the data, which of the following tests are parametric? Which are nonparametric?

a. A researcher measures the proportion of schizophrenic patients born in each season.

b. A researcher measures the average age that schizophrenia is diagnosed among male and female patients.

c. A researcher tests whether frequency of Internet use and social interaction are independent.

d. A researcher measures the amount of time (in seconds) that a group of teenagers uses the Internet for school-related and non-school-related purposes.

18. The Better Business Bureau (BBB) wants to determine whether a certain business is engaging in fair hiring practices. The BBB finds that a local business employs 66 men and 34 women. The general population of workers in this industry is 60% men and 40% women. Using a chi-square goodness-of-fit test, decide to retain or reject the null hypothesis that the distribution of men and women in the local business is consistent with, or proportional to, that in the general population of workers. Use a .05 level of significance.

20. A behavioral therapist records the number of children who are spanked and not spanked by their parents as a form of punishment in a sample of parents who were spanked by their parents as children. The following table shows the results of a chi-square goodness-of-fit test. If we expect to observe equal frequencies, then compute a chi-square goodness-of-fit test using a .05 level of significance and decide to retain or reject the null hypothesis.

Child is not spanked: 28

Child is spanked: 46