Question

If X bar is the mean of x1,x2,.......,xn,then for a is not equal to zero, the mean of ax1, ax2,........,axn, x1/a,x2/a,.......,xn/a is





(a) (a+1/a)x bar
(b) (a+1/a) x bar/2
(c) (a+1/a)x bar /n
(d) ((a+1/a) x bar)/2n​

Answer 1

Answer:

[a(x1+x2+.......+xn) +(1/a) (x1+x2+.......+xn)]/2n

(a+1/a) (x1+x2+.......+xn)/2n

(a+1/a) (x1+x2+.......+xn)/n*1/2

(a+1/a)*x bar*1/2

option b

Answer 2

Answer:

option b is the correct answer