Two groups of bank trainees each wrote a banking exam with the following percentage results:
|
|
Mean
|
Variance
|
Sample size
|
|
Group 1
Group 2
|
76
64
|
110
88
|
34
26
|
(a) Compute the coefficient of variation of exam scores for each trainee group.
(b) Which group showed greater consistency in exam score performance? Why?