# Statistical Analysis

WIDENER UNIVERSITY – SCHOOL OF NURSING

N652 – Statistical Analysis

Spring 2011

Quiz #7

***PLEASE POST THE COMPLETED ASSIGNMENT ON CAMPUSCRUISER “MY JOURNALS” BY THE BEGINNING OF THE NEXT CLASS***

NAME: ______________________________________ DATE: ______________
(my signature attests to the fact that the answers presented on this test are my own work, without the assistance of any person in or outside of this class)

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WIDENER UNIVERSITY – SCHOOL OF NURSING

N652 – Statistical Analysis

Spring 2011

Quiz #7

***PLEASE POST THE COMPLETED ASSIGNMENT ON CAMPUSCRUISER “MY JOURNALS” BY THE BEGINNING OF THE NEXT CLASS***

NAME: ______________________________________ DATE: ______________
(my signature attests to the fact that the answers presented on this test are my own work, without the assistance of any person in or outside of this class)

1. In a study measuring Zest for Life in a random sample of 144 graduate nursing students, data yielded the following statistics:

Mean = 104; SD = 16

A 95% Confidence Interval would suggest that the true mean of the population

would fall between _________ and _________.

A 99% Confidence Interval would suggest that the true mean of the population

would fall between _________ and _________.

Use 2 decimal places when doing all math calculations. SHOW your math calculations for figuring the Confidence Intervals:

2. Given a set of scores on a variable that is normally distributed, what percent (%) of scores would fall:

____ between –2.5 and +2.5 S.D.

____ between +1.0 and +3.0 S.D.

____ between -2.0 S.D. and the Mean

____ between -1.5 and +2.0 S.D.

3. Given the descriptive data presented in Table 1 (below), identify the mode and median of the Vigor scores of cancer patients.

a. Mode= ____________

b. Median=___________

Table 1. Frequency Distribution of Scores on Vigor

Score Frequency Percent Cumulative Percent
—– —– ——— ——- ————- ——————
5 2 6.9 6.9
6 1 3.4 10.3
10 1 3.4 13.8
12 1 3.4 17.2
13 1 3.4 20.7
14 3 10.3 31.0
15 3 10.3 41.4
16 4 13.8 55.2
17 1 3.4 58.6
18 5 17.2 75.9
19 2 6.9 82.8
20 2 …

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