Question

the mean of 16 observation is 8 if 2 is added to every number find new mean​

Answer 1

There are 16 numbers, and their mean is 8.

Let their sum be S. So mean = S/16 =8.

If two is added to each number , the sum increases by 16 x 2 = 32.

To find the mean we divide by 16, so mean = (S+32)/16 =8+2 =10

Hence the new mean is 10

Answer 2

16

16*2

=32

32÷2=16

hope you understood