Statistical Significance




1. If the results of a study are statistically significant, the results of the study are probably reliable.

True
False

2. Statistically significant results are

probably due to chance
probably not due to chance

3. If the results are statistically significant, the researcher will probably

reject the null hypothesis
not reject the null hypothesis

4. A difference between the average scores of the treatment group and the control group could be due to chance alone.

True
False

5. The greater the difference between the experimental group scores and the control group scores, the more likely the results are to be statistically significant.

True
False

6. Two simple experiments (Experiment A and Experiment B) obtained similar results. That is, in both experiments, the experimental group scored an average of 10 points higher than the control group. Experiment A studied 20 participants. Experiment B studied 200 participants. Which experiment is more likely to obtain statistically significant results?

Experiment A
Experiment B