Question

if mean of 12 numbers is 32 and 4 is added to every number, what will be the new mean?

Answer 1

Mean of 12 numbers is 32
Let the sum of numbers be x
x/12 = 32
x = 32*12
  = 384

When 4 is added to every number,
x = 384 +12*4
  = 384 +48
  = 432

New mean = 432/12
                  = 38

Answer 2

heya mate,

thank you for the question

Here is your answer,


given that the mean of 12 numbers = 32
let the sum of those 12 observation = x
then mean would be,

x/12 = 32

=> x = 32 × 12
= 384

If 4 is added to each number,
the new mean

= [ 384 + ( 12×4 ) ] / 12

= ( 384 + 48 ) / 12

= 432 / 12

= 36


Hence the new mean is 36


Hope this helps


if u want any other help or have any doubt feel free to ask me. i would like to help.


Thank you


#Sneha