Question

the mean of 16 numbers is 8 if 2 is added to every numbers what will be the new mean

Answer 1

Hi ,

It is given that ,

Mean of 16 members = 8

If 2 is added to every number the

new mean = old mean + 2

= 8 + 2

= 10

I hope this helps you.

: )

Answer 2

$mean \: = \: \frac{sum \: of \: observations \: }{number \: of \: observations}$





$mean \: = \frac{sum \: of \: 16 \: numbers \: }{16}$



$8 = \frac{sum \: of \: 16 \: numbers}{16}$


8× 16 = sum of 16 numbers

128 = sum of 16 numbers

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When 2 added to each number,


$mean \: = \frac{sum \: of \: 16 \: numbers + (2 \times 16)}{16}$



$mean \: = \frac{128 + 32}{16}$



$mean \: = \: \frac{160}{16}$



$mean \: = 10$



I hope this will help you



-by ABHAY