MENU
Question -

The sums of the deviations of a set of n values x1, x2,тАж xn measured from 15 and -3 are -90 and 54 respectively. Find the value of n and mean.



Answer -

In first case,
(x1 тАУ 15) + (x2 тАУ 15) + (x3 тАУ 15) + тАж + (xn тАУ 15) = тАУ 90
=> x1 + x2 + x3 + тАж + xn тАУ 15 x n = тАУ 90

Comment(S)

Show all Coment

Leave a Comment

Free - Previous Years Question Papers
Any questions? Ask us!
×