# Exercise 11 and 16 Essay

1292 Words Aug 17th, 2014 6 Pages
HLT362V Applied Statistics for Healthcare Professionals
July 20, 2014

Exercise 11 – Using Statistics to Describe a Study Sample

1. What demographic variables were measured at least at the interval level of measurement? Demographic variables that are measured at the interval level are age, income (\$), length of labor (hrs), return to work (wks), number of hours working per week.
2. What statistics were used to describe the length of labor in this study? Were these appropriate? The statistics used to describe the length of labor in this study descriptive, they were mean and standard deviation. These are appropriate as they both can be calculated at the interval level of measurement.
3. What other statistic could have been used to
The researchers analyzed the data they collected as though it were at what level of measurement? The researchers analyzed the data as though it were at the interval/ratio level.
2. What was the mean post-test empowerment score for the control group? The mean post-test empowerment score for the control group is 97.12
3. Compare the mean baseline and post-test depression scores of the experimental group. Was this an expected finding? Provide rationale for your answer. Yes this was the expected answer as the mean score for depression went down from 14.00 to 13.36. This indicates less depression after the subjects completed the empowerment program.
4. Compare the mean baseline and post-test 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 baseline and post-test depression scores are the same, 10.40. This strengthens the validity of the research results. The control group did not receive the empowerment program and the scores stayed the same while the experimental group’s depression score improved after the program was completed indicating that the program did make a difference.
5. Which groups test scores had the least amount of variability or dispersion? Provide a rationale for your answer. The group test score that had the least amount of variability or dispersion is the experimental group’s empowerment post-test with a

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