Question

If the mean of 25 obseviations is 27 and each observiations is decreased by 7 what will be the new mean ?​

Answer 1

Answer:

20

Step-by-step explanation:

I hope this will help You

Answer 2

Answer:

Mean of 25 observations =27

Sum of 25 observations =(27×25)

= 675.

ATQ,

Each observations are decreased by 7.

i.e. 1 observation will decrease by 7

:. 25 observations will decrease by=(25×7)=175.

After decreasing the sum will be=675-175=500

.: Mean=500/25

=20....

Step-by-step explanation:

20 will the the new mean.

HOPE THIS WILL HELP YOU:)