Try the following self-assessment questions. When you have decided on your answer, mouse over the answer button to check:

1. For each of the following features, say whether it applies to a Spearman correlation?

- Nonparametric test.
- Numbers plugged into the formula for the statistic are frequencies .
- Numbers plugged into the formula for the statistic are ranks.
- Used if the differences between samples need to be assessed.
- Used on related data.
- Uses a statistic called a correlation coefficient.
- Uses the
*r*statistic. - Accept the null hypothesis if the calculated statistic is greater than the critical value of the statistic looked up in a table.
- Reject the null hypothesis if
*P*on the SPSS printout is less than 0.05.