Question

The mean of 20 numbers is 18. If2 is added to each number, what is the new mean?​

Answer 1

Answer:

36

Step-by-step explanation:

mean= sum of observation/ no of observation

18 = sum/20

if 2 is added to every number

it will become 20 x 2 = 40

when mean is 18 , observation is 20

therfore , mean is x , observations is 40

by cross multiplication method

x= 40 x 18 divided by 20

x = 36

the new mean will be 36

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