The human resources department of a company recorded the number of days absent of 23 employees in the technical department over the past nine months:
|
5
|
4
|
8
|
17
|
10
|
9
|
30
|
5
|
6
|
15
|
10
|
9
|
|
2
|
16
|
15
|
18
|
4
|
12
|
6
|
6
|
15
|
10
|
5
|
|
(a) Find the mean, median and modal number of days absent over this nine-month period. Interpret each central location measure.
(b) Compute the first quartile and the third quartile of the number of days absent. Interpret these quartile values for the human resources manager.
(c) The company's policy is to keep its absenteeism level to within an average of one day per employee per month. Based on the findings in (a), is the company successful in managing its absenteeism level? Explain.