Question

This mean of 10 number is 55 if one number is excluded there mean because 50 the excluded number is

Answer 1

sum of onservatios/no of observations=mean of it so,x/10=55.x=10×55=550.so, one number is removed. x/9=50.x=9×50=450. so number excluded=550-450=100

Answer 2

ANSWER...................,

The mean of 10 number = 55

The sum of 10 number = 10 × 55 = 550

If one number is excluded ,

Then mean of 9 number = 50

Sum of 9 number = 9 × 50 = 450

∴excluded number = 550 - 450 =1 00