Question

if the mean of 8 observations x, x+1, x+2, x+3, x+4, x+5, x+6, x+7=45 find the mean of 5 observations​

Answer 1

Mean of x,x+3,x+5,x+7,x+10=9

Sum of the terms =5x+25

Mean =

5

5x+25

=9

x+5=9

x=4

Last three observations are 9,11,14

Mean =

3

9+11+14

=11

3

1

THIS IS EXAMPLE