The following data represents the marks of 11 students in group (A) :
14, 20, 17, 16, 18, 19, 15, 13, 2, 20, 14, 12
- Compute the best central and dispersion measures.
If the central and dispersion measures for the marks of the students in group (B) are as follows:
|
n
|
mean
|
median
|
mode
|
s.d
|
min
|
max
|
|
|
|
40
|
14
|
13.9
|
14.1
|
4.12
|
12
|
16
|
13.43
|
15.1
|
- Where s.d standard deviation
- Which group is better in the sense of homogeneity, group (A) or Group (B)? State the reason of your answer.