Question

the arithmetic mean of a-2,a,a+2 is​

Answer 1

The arithmetic mean:

(a-2)+a+(a+2)/3

=> a+a+a+2-2/3

=> a+a+a/3

3a/3

= a

thus the mean is a

Answer 2

Answer:

Arithmetic mean of $a-2,a,a+2$ is equal to "a".

Step-by-step explanation:

Arithmetic mean is sum of observations divided by number of observations.

Arithmetic mean $=\frac{(a-2)+(a)+(a+2)}{3}$

                            $=\frac{3a}{3}=a$

Therefore, the arithmetic mean of given data is equal to "a".