Research II. Session 13

Please write a response explaining why the answer in bold is correct.

1. Which is the weakest significance (p-value)? .123, .047, .012, .001  .123  . .

2. Suppose you read "f = 50; 50%". What type of statistics are these? Descriptive

3. If a researcher measures PTSD using a scale, which level of measurement would be used? Interval.

4. Suppose you read "M = 50 (SD = 5.00)". Sixty-eight percent of the cases fall between which scores? 45-55

5. For which level of measurement is the mean appropriate?

Ratio and Interval

6. What does a Pearson r of 0.00 indicate The absence of association

7. What type of statistical techniques can be used to test decisions about the null hypothesis? Inferential

8. Regarding rejecting the null hypothesis It is impossible to do so with absolute certainty

9. How often do authors of journal articles explicitly mention the null hypothesis?

Rarely