Question

Mean of the data x+5, -x +7,4,5,2x +6,-2x+5,7,8 is
(A) 5.175
(B) 5.782
(C) 5.875
(D) 5.674​

Answer 1

Step-by-step explanation:

answer is d. 5.674 is correct

Answer 2

Answer:

5.875

Step-by-step explanation:

Arithmetic Mean =$\frac{Sum of observations}{No.of observations}$

=  $\frac{x+5-x+7+4+5+2x+6-2x+5+7+8}{8}$

=  $\frac{47}{8}$ (as x and -x will be cancelled and 2x and -2x will be cancelled)

=5.875