Question

the mean of 16 number is 8 if 4 is added to each number what will be the new number​

Answer 1

Answer:

Step-by-step explanation:

Mean = sum.of observations/ no of observations

=> 8 = sum of observations/1 6

=> sum of observations = 8 × 16 = 128

In adding 4 to each observation we have to add 16 × 4 = 64 to the original sum

New sum = 128 + 64 =192

Hence new mean = 192/16

= 12

Hope it is clear.