Statistics Exercise 16

Topics: Arithmetic mean, Average, Scientific method Pages: 3 (626 words) Published: July 17, 2012
□ EXERCISE 16 Questions to be Graded

1. The researchers analyzed the data they collected as though it were at what level of measurement?

d. Experimental

2. What was the mean posttest empowerment score for the control group?

The mean posttest empowerment score for the control group was 97.12

3. Compare the mean baseline and posttest depression scores of the experimental group. Was this an expected finding? Provide a rationale for your answer.

The mean baseline depression score of the experimental group is 14.00. The mean posttest depression score of the experimental group is 13.36. The posttest score is 0.64 lower than the baseline score. This was an expected finding because it was hypothesized that after the completion of the empowerment program the experimental group’s depression would improve.

4. Compare the mean baseline and posttest depression scores of the control group. Do these scores strengthen or weaken the validity of the research results? Provide a rationale for your answer.

The mean baseline and posttest depression scores of the control group have no change and stays at 10.40. These scores strengthen the validity of the research results because it shows that without the empowerment program, the control group’s depression has not improved.

5. Which group's test scores had the least amount of variability or dispersion? Provide a rationale for your answer.

The control group’s test scores had the least amount of variability or dispersion. Their depression baseline (SD=10.34) and posttest (SD=10.34) had no changes.

6. Did the empowerment variable or self-care self-efficacy variable demonstrate the greatest amount of dispersion? Provide a rationale for your answer.

The self-care self-efficacy variable demonstrated the greatest amount of dispersion. The total group’s posttest score is 1.78 lower than the baseline score. Whereas the empowerment variable total group’s posttest score is only 0.11 lower than the baseline...
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