Question

Exhibit 3-1. The sample data below shows the number of hours spent by 5 students over the weekend to prepare for Monday’s BUAD 2060 midterm exam.

2      3       4     6        13

18. Refer to Exhibit 3-1. The coefficient of variation is: a. 65.3% b. 72.5% c. 85.6% d. 95.6%

Answer 1

From the given data we have to compute sample mean and sample standard deviation (s), we get

Sample standard deviation is computed by using below table and formula,

X	(X-5.6)2
2	12.96
3	6.76
4	2.56
6	0.16
13	54.76
Total	77.2

Therefore, Coefficient of variation (CV) is 78.45%

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