Exercise 16 Questions to be graded
1. The researchers analyzed the data they collected as though it were at what level of measurement?- The correct answer is Interval/ratio. a. Nominal
b. Ordinal
c. Interval/ratio
d. Experimental

2. What was the mean posttest empowerment score for the control group? - 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 Experimental group’s mean depression baseline score(mean-14.00) was 0.64 points higher than its posttest mean score ( mean-13.36) because on the average the experimental group subjects scored higher on the baseline than after the end of the empowerment program. This was an expected finding because it was hypothesized that after the completion program, the experimental group’s depression will be lowered and they will be empowered to increase their self-efficacy skills. This finding indicates that the empowerment intervention helped to lower depression on ESRD 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 of the control group (mean-10.40) and the mean post test score of the control group (10.40) was the same; there was no difference between the two. This strengthened the validity of the research result because it was expected that the after the empowerment program, that depression will be lowered in ESRD patients. Rationale was that, there was an improvement shown in the depression means scores of the experimental group.

122 EXERCISE 16 • Mean and Standard Deviation

5. Which group’s test scores had the least amount of variability or dispersion? Provide a rationale for your answer. The posttest score of the empowerment for the experimental group with SD of 7.28. it is the least score which means it has the...

...EXERCISE16Questions to be Graded
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
Answer: c. Interval/ratio
2. What was the mean posttest empowerment score for the control group?
Answer: 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.
Answer: The mean baseline depression score is 14.00 and the posttest is 13.36 with a difference of 0.64.There is a slight amount of depression after the tools they were using and research was completed but was not enough of a difference to make an impact decision regarding if the strategies were truly effective. Patients were less depressed after the research.
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.
Answer: It was found that the baseline and posttest for depression of the control group remained the same at 10.4 and these scores strengthen the validity because only the experimental group showed a positive change in this experiment.
5. Which group's test scores had the least amount of variability or dispersion? Provide a rationale for your answer.
Answer: The group with the least...

...Exercise16 Page: 121-122
1. The researchers analyzed the data they collected as though it were at what level of measurement?
a) Nominal
b) Ordinal
(c) Interval/ratio- answer
d) Experimental
1
2. What was the mean posttest empowerment score for the control group?
Mean= given (n=25),(=2428) threfore, 2428÷ 25= 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.
This was an expected
finding, because the researchers hypothesized that the empowerment program would be
beneficial to ESRD patients and result in a decrease in their depression scores. However,
the difference in the depression baseline and posttest means for the experimental group
was only 0.64, which is less than what might have been expected.
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 depression scores in the research tend to be constant both being 10.14 in the mean. These scores strengthen the research validity because they evidently shows that in the control groups whereby the empowerment program was not effected no visible change took place either in the baseline or the posttest score. They further back up the research findings showing evidence even in the standard deviation which clarifies...

...EXERCISE 36 Questions to be Graded
1. The researchers found a significant difference between the two groups (control and treatment) for change in mobility of the women with osteoarthritis (OA) over 12 weeks with the results of F (1, 22) = 9.619, p = 0.005. Discuss each aspect of these results.
Answer: The F value suggests there is a significant difference between the results of the control and treatment groups. The P-value of 0.005 is < the alpha of 0.05.This suggest that the groups are significantly different and the null hypothesis should be rejected.
2. State the null hypothesis for the Baird and Sands (2004) study that focuses on the effect of the GI with PMR treatment on patients’ mobility level. Should the null hypothesis be rejected for the difference between the two groups in change in mobility scores over 12 weeks? Provide a rationale for your answer.
Answer: Treatment group mean=control group mean
With the p-value being < the alpha, the null hypothesis would be rejected indicating the difference in the mean mobility scores.
3. The researchers stated that the participants in the intervention group reported a reduction in mobility difficulty at week 12. Was this result statistically significant, and if so at what probability?
Answer: the p-value of 0.005 suggests that the results are statistically significant.
4. If the researchers had set the level of significance or α = 0.01, would the results of p = 0.001 still be...

...Exercise16: Mean and Standard Deviation
1. The null hypothesis would be: There is no difference in levels of empowerment, self-care and efficacy, or depression in patients with end stage renal disease that have attended an empowerment program.
2. The average baseline depression score in the experimental group was 14.00. This value is pulled from the Mean Column
3. The baseline number for the self-care and efficacy patients was 89.56, where posttest numbers are 96.00. This should be an expected number as the patient should score higher post program.
4. The experimental group showed a decrease from a baseline of 14.00 to a 13.36. The Control group stayed the same when comparing baseline to Post Test.
5. The mean is 101.08 and is found in the total column, under the empowerment baseline posttest section.
6. The biggest change in mean in the Empowerment group, with a difference of 6.64. The study shows pre and post number for ESRD patient’s that attended an empowerment program, so one would expect that the greatest increase would be in empowerment.
Post Test Scores – Baseline score = Difference 105.04-98.40=6.64
7. According to the Relevant Study Results, the average time that each patient was on dialysis was 52.56 months.
8. The answer would be B, 96 was the average self-care self-efficacy posttest score for the experimental group.
9. The control groups SD of 8.99 indicates the standard deviation....

..._________________________________________________________________________________
□ EXERCISE16Questions
* 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...

...□ EXERCISE 20: Questions to be graded
1. Which patient scored the highest on the preoperative CVLT Acquisition? What was his or her T score? Pt. 3 had a pre-op CVLT score of 63. The T score was 50. 10x47.8/5.8+(50-10x47.8/5.8)
10x47.8=478 478/5.8=82.41 50-82.41= -32.41 -32.41+82.41=50
2. Which patient scored the lowest on postoperative CVLT Retrieval? What was this patient's T score? Pt. 4 had a post-op CVLT retrieval score of 23. 10*47.8/5.8+(23-10*47.8/5.8
10x47.8=478 47.8/5.8=82.41 23-82.41= -59.41 -59.41+82.41=23
3. Did the patient in Question 2 have more of a memory performance decline than average on the CVLT Retrieval? Provide a rationale for your answer. Yes, because the average patient CVLT retrieval was 39.29. 668/17=39.29
4. What is the mean ( ) and standard deviation (SD) for preoperative T score for CVLT Acquisition? Mean = 788/17=46.35 SD =98.6/17= 5.8
5. Is the preoperative Retrieval T score for Patient 5 above or below the mean for the norm of the group? Provide a rationale for your answer. Below because the pt’s score is 33.4 {10x52/5.8+[50-(10*52/5.8)]} and the average is 47.8 according to table 3.
6. Assuming that the distribution of the preoperative CVLT Retrieval T scores is normal, the middle 68% of the patients had T scores between what two values? 46-50
7. Assuming that the distribution of scores for the postoperative CVLT Retrieval T scores is...

...Name:_____ Tina Wilhite
Class: _____HLT-362V-0503
Date: ______01/25/2015
□ EXERCISE16Questions to be Graded
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
2. What was the mean posttest empowerment score for the control group?
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 for depression 14.00 and the post-test for depression was 13.36. The post-test score is 0.64 lower than the baseline score which is what the study hypothesized. The study results state “This study found that there were significant differences in improvement of empowerment, self-care self-efficacy, and depression in patients who were in the intervention group using empowerment strategies than with the control group patients” (Grove, 2007).
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 post-test depression score was 10.40. These scores strengthen the validity of the research results because it shows that depression did not improve for the...

...Workbook Exercises11 & 16
Grand Canyon University
Complete Exercises 11 and 16 in Statistics for Health Care Research: A Practical Workbook, and submit as directed by the instructor (e.g., as a Microsoft Word document in the LoudCloud classroom).
In order to receive full credit on calculated answers, please show your work. (Use Word's equation editors, etc., and/or provide a short written description as to how you obtained the final result.)Exercise 11 (4 points per question)
1. What demographic variables were measured at least at the interval level of measurement?
Age, Income, Length of labor, Return to work, and Number of hours working per week.
2. What statistics were used to describe the length of labor in this study? Were these appropriate?
Sample size, Median and Standard Deviation were used to describe the length of labor in the experimental group and Population, Median, and Standard Deviation were used to describe length of labor in the control group. Because length of labor is considered an interval level of measurement, using these statistics were appropriate.
3. What other statistic could have been used to describe the length of labor? Provide a rationale for your answer.
I believe mean could have been used to describe length of labor. By calculating the mean, you can figure out the average length of labor of the population.
4. Were the distributions of scores similar for the...

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