# Test Yourself

Take this quiz and see how you do. Select the correct answers by using the drop down menus. Once you are done, click submit to see your score! The ones that you get wrong will have a check!

1. The main purpose of the t test is to determine whether the difference between two groups is larger than what would be expected by random error alone.
2. If the df for the t test is 12, the number of scores analyzed was
3. If df = 14, t < .05, and p > .05, the results were statistically significant.
4. If df = 14, t = 5, p < .05, experimental group mean = 11, and control group mean = 1, the bottom (denominator) of the t ratio would be
5. If df = 140, t = 5, p < .05, experimental group mean = 11, and control group mean = 10, the effect size would be small.
6. A t test should be used if your dependent measure is ordinal (e.g., 1 = first person to finish exam, 2= second person to finish exam, 3= third person to finish exam).
7. If your experimental group members become an interacting group, the results of a t test on data from your simple experiment will
8. Which of the following would be a more serious problem?
9. If you did a t test and your scores were not normally distributed, you would be most concerned if
10. The reliability of a measure would be most likely to be called into question when the research

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