Economy, asked by kprasad57718, 5 hours ago

calculate the arithmetic mean from the following data
a. direct method b. assumed mean
x 5 10 15 20 25 30 35 40
f 5 7 9 10 8 6 5 2​

Answers

Answered by roydhiraj1949
3

Answer:

x f fx

5 4 20

10 5 50

15 7 105

20 4 80

25 3 75

30 2 60

Total N=25 ∑fx=390

Arithmetic Mean,

x

ˉ

=

N

∑fx

=

25

390

=15.6

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