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. If you have "cried wolf" when there really was no real effect, you have made a
-- Choose an answer --
a. Type 1 error
b. Type 2 error
2. What would be most like a Type 1 error?
-- Choose an answer --
a. A jury convicting an innocent person
b. A jury letting a guilty person go free because the evidence was not conclusive
3. By controlling extraneous variables, you can greatly reduce the chances of making a Type 1 error.
-- Choose an answer --
a. True
b. False
4. If you use a p <.05 significance level, you are taking a less than 5% risk of making a Type 1 error.
-- Choose an answer --
a. True
b. False
5. If you obtain statistically significant results in a well-designed experiment, you may have made a Type 1 error.
-- Choose an answer --
a. True
b. False
6. You will reduce your risk of making statistical errors by using a p < .0001 significance level rather than a p < .05 level.
-- Choose an answer --
a. True
b. False
7. Which would be most like a Type 2 error?
-- Choose an answer --
a. A physician telling a women who was not pregnant that she was pregnant
b. A physician failing to telling a women who was pregnant that she was pregnant
8. If you reduce your risk of making a Type 2 error, you will also increase your power to find statistically significant effects.
-- Choose an answer --
a. True
b. False
9. Beginning researchers are more likely to make
-- Choose an answer --
a. Type 1 errors
b. Type 2 errors
10. Which experiment would probably be more powerful?
-- Choose an answer --
a. A field experiment
b. A lab experiment
11. Which experiment would probably be more powerful?
-- Choose an answer --
a. A study comparing one hour of full-spectrum lighting with no full-spectrum lighting
b. A study comparing four hours of full-spectrum lighting with no full-spectrum lighting
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