1. What is sampling? Briefly explain the various methods of sampling.
2. A company appoints four salesmen, A, B, C and D, and observes their sales in three seasons- summer, winter and monsoon. The figures ( in lakhs) are given in the following table:
|
Season
|
Salesman
|
|
A
|
B
|
C
|
D
|
Total
|
|
Summer
|
36
|
36
|
21
|
35
|
128
|
|
Winter
|
28
|
29
|
31
|
32
|
120
|
|
Monsoon
|
26
|
28
|
29
|
29
|
112
|
|
Total
|
90
|
93
|
81
|
96
|
360
|
|
|
|
|
|
|
|
|
|
|
Carry out an analysis of variance at 5% level of significance.