Question

The mean of distribution of 50 determine the value of g 3

Answer 1

Means is given as 50

⇒  

1

∑

5

​  

f

1

∑

5

​  

xf

​  

=50

⇒  

17+5a+3+32+7a−11+19

170+150a+90+1600+490a−770+1710

​  

=50

⇒640a+2800=3000+600a

⇒40a=200

⇒a=5

Hence, option C.