Question

The mean of 75 number is 15.if each number is multiplied by 4 find the new mean

Answer 1

Answer:

Step-by-step explanation:

Mean = Sum of all observation /

Total no. of observation

15 = Sum of all observation/75

15*75 = Sum of all observation

=> 1125 = Sum of all observation

ATQ...

Each no. is multiplied by 4.

=> 1125*4 = 4500

New mean = 4500/75 = 60

Answer 2

New mean is 60 if it's multiply by 4