Re:Topic 2 DQ 1

Topics: Mean, Arithmetic mean, Standard deviation Pages: 3 (714 words) Published: November 1, 2014
EXERCISE 20 Questions to be graded

1.Which patient scored the highest on the preoperative CVLT Acquisition? What was his or her T score? Patient 3 scored the highest on postoperative CVLT Acquisition with a T score of 63.

2.Which patient scored the lowest on postoperative CVLT Retrieval? What was this patient's T score? Patient 4 scored the lowest on the postoperative CVLT Retrieval with a T score of 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, the average memory performance decline on the CVLT Retrieval was around 9 points while the memory performance decline on the CVLT Retrieval test for patient 4 was about 21.Thus,patient 4 almost doubled the memory performance decline than average on the CVLT Retrieval test. (Average mean difference in memory performance decline on CVLT Retrieval: 47.8-38.2 = 9.6 Points.(Data from Table 3).

Difference in memory performance decline on CVLT Retrieval for patient 4: 44-23 = 21 points. (Data from Table 2).

4.What is the mean () and standard deviation (SD) for preoperative T score for CVLT Acquisition?

For preoperative Acquisition, the mean(x) = 45.9 and the standard deviation (SD) = 5.2. (Data from Table 3)

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. The preoperative Retrieval T score for Patient 5 is above the mean for the norm of the group. The preoperative Retrieval T score for patient 5 is 52 while the mean for the norm of the group is only 47.8 with a SD of 5.8. So, patient 5 is a little less than 1 standard deviation greater than the mean preoperative Retrieval T score for the norm of the group. (Data from Table 2 & 3)

Work: 47.8 + 5.8 = 53.6 > 52

6.Assuming that the distribution of the preoperative CVLT Retrieval T scores is normal, the middle 68% of the patients had T scores between...
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