Question

In the problem
No. of shirts:
30-32
33-35
36-38
39-41
42-44
15
14
42
27
No. of persons:
The assumed mean is
18
(a) 34
(b737
(c) 40
(d) 43​

Answer 1

Solution:

Mean =A + (∑fd/n) * h

= 37 + (19/116) * 3

= 37 + 0.1638 * 3

= 37 + 0.4914

= 37.4914

Hope this will be helpful to you.

See the data picture below.