Question

1. Find Mean of 2 + a, a, 2 - a? ​

Answer 1

Answer:

Arithmetic mean =

No. of observations

Sum of all observations

⇒ A.M =

3

a−2+a+a+2

=

3

3a

⇒ A.M =a

Answer 2

Mean = Sum of all observation / Total number of observation

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

Mean = 4 + a / 3

I hope it helps you