Question

find the mean of a-2d,a-d, a+d,a+2d with process ​

Answer 1

(a+d +a+2d +a_-d+ a-2d)÷4 =4a ÷ 4 =a

Answer 2

Hey,

Answer:

"a" is the final answer

Step-by-step explanation:

mean = sum of all the observations/total number of observations

mean = (a-2d)+(a-d)+(a+d)+(a+2d)/4

Hope it helps you,

Thanks.

mean = 4a/4

mean = a