Question

coefficient of variation of data 1 3 5 7 9 is​

Answer 1

Given : data 1 3 5 7 9

To Find : coefficient of variation of data

Solution:

1 3 5 7 9

Mean = (1 + 3 +5 + 7 + 9)/5

= 25/5

= 5

xi         d =  xi - Mean(5)        d²

1           -4                             16

3          -2                             4

5           0                              0

7           2                               4

9           4                             16

Sum       0                          40

∑d² = 40

σ = √ (∑d²/n)

=> σ = √40/5

=> σ = √8

=> σ = 2.828 4

coefficient of variation = (σ / Mean ) *100

= ( 2.828 4/20)*100

= 14.142

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