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Gaurav Seth 5 years, 3 months ago
(X)
d = X − A where A = 50
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
44
65
28
45
67
30
50 (A)
68
39
53
70
40
60
75
-06
15
-22
-05
17
-20
0
18
-11
3
20
-10
10
25
where,
N= Number of items
ΣX= Total of monthly income of all the families
Σd= net sum of deviations
Calculation of Mean by direct method
X=ΣX/N
X bar =50.27
5Thank You