AMU Engineering 2017 solved paper Solved Paper

Given, coefficient of variation of 1 st distribution, C.V1=60,σ1=21
and coefficient of variation of 2 nd distribution;
C.V2=70σ2=16
Let x1 and x2 be means of 1 st and 2 nd distribution respectively.
Then, C.V1=

σ1

x1

×100
⇒60=

21

x1

×100
or x1=

21

60

×100=35
Also, C.V2=

σ2

x2

×100 or x2=

16

70

×100=22.85