Question

Look at this set of 8 numbers:

63 +99 +94 +63 +45 +63 +82 +59
How would the mean change if the number 44 were added to the set?

Answer 1

it will be reduced by 3

Explanation:

to find the mean change we need to calculate the current mean of the numbers first

Mean = summation of all numbers/total count of the numbers

= 568/8

= 71

we now find the mean after adding 44

612/9

= 68

to find the mean change we subtract the two values of mean we have obtained

71 - 68

= 3