Question

16- Find standard deviation and coefficient of standard deviation from the Following data. Class interval- 0-4 4-8 8-12 12-16 16-20 20-24 Frequency 10 15 20 25 20 10​

Answer 1

Answer:

N=10

∑fx=130

∑fD

2

=250

Standard Deviation =σ=

N

∑fD

2

=

10

250

=

25

Therefore, σ=5

Coefficient of variation, C.V=

x

σ

×100=

13

5

×100=

13

500

=38.46