Calculating measures of location and dispersion for the given set of data.
A sample of 30 MBA students are asked to log the exact quantity of time they spent working on QM in the previous week. The data are below:
|
student
|
Time (hours)
|
|
1
|
13.26
|
|
2
|
9.73
|
|
3
|
13.6
|
|
4
|
12.6
|
|
5
|
1
|
|
6
|
12.89
|
|
7
|
2.03
|
|
8
|
4.38
|
|
9
|
17.69
|
|
10
|
4.12
|
|
11
|
25.91
|
|
12
|
6.89
|
|
13
|
5.01
|
|
14
|
12.47
|
|
15
|
14.79
|
|
16
|
19.4
|
|
17
|
8.33
|
|
18
|
15.75
|
|
19
|
12.39
|
|
20
|
3.31
|
|
21
|
5.31
|
|
22
|
3.87
|
|
23
|
4.43
|
|
24
|
12.03
|
|
25
|
3.24
|
|
26
|
9.23
|
|
27
|
8.13
|
|
28
|
12
|
|
29
|
11.21
|
|
30
|
22.82
|
Required
1. Compute Mean and Median time spent working on QM
2. work out the Variance and Standard Deviation of time spent working on QM
3. Analyse the 25th and 75th percentile of time spent working on QM
4. find out the Coefficient of Skewness and the Coefficient of Variation for time spent working on QM.
5. By an appropriate technique, present the time spent working on QM data graphically.