Exercise 16

Topics: Arithmetic mean, Standard deviation, Mean Pages: 2 (756 words) Published: March 16, 2013
_________________________________________________________________________________ □ EXERCISE 16 Questions
* 1. The researchers analyzed the data they collected as though it were at what level of measurement? * a.Nominal
* b.Ordinal
* c.Interval/ratio
* d.Experimental
Because the mean is calculated and mean is the best measure of central tendency when the data of interval or ratio scale. * 2. What was the mean posttest empowerment score for the control group? The mean posttest empowerment score for the control group is 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 score for depression is 14.00 and mean posttest depression scores is 13.36 of the experimental group. The mean depression score is smaller for post test in the experimental group and this is expected because we want to reduce the depression with respect to the treatment we are giving to the subjects or patients. * 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 score for depression is 10.40 and mean posttest depression scores is 10.40 of the control group. The mean depression score is same for post test in the control group and these results strengthen the validity of the results because we can say that there is no significant decrease in the depression scores for posttest as compare to baseline. We can say that there is no significant difference in the baseline mean score and posttest mean depression score in control group. * 5. Which group's test scores had the least amount of variability or dispersion? Provide a rationale for your answer. In terms of comparisons of groups the experimental group had the least amount of variability or dispersion because all the...
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