Question

The mean of 20 numbers is 18. If 2 is added to each number, what is the new mean?

Answer 1

HEYA! !!

Given , Mean = 18

mean = Sum of obs / number of observations

18 = x / 20

18 × 20= x

360 = x

sum of observations = 360

if 2 added to each observations then mean =:

360+40 = 20

400 = 20

new mean = 400 / 20

= 20

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Answer 2

Answer:

Given , Mean = 18

mean = Sum of obs / number of observations

18 = x / 20

18 × 20= x

360 = x

sum of observations = 360

if 2 added to each observations then mean =:

360+40 = 20

400 = 20

new mean = 400 / 20

= 20

Step-by-step explanation: