Question

Mean of 10 observations is 2.5 if one observation, namely 2.5 is deleted, determine the new mean.

Answer 1

When 10 observations,

Mean =(sum of 10 observations)/10

2.5 =(sum of 10 observations)/10

2.5*10 =(sum of 10 observations)

25 = sum of 10 observations
_______________________
When 2.5 is deleted,

Mean =(sum of 10 observations -2.5)/9

Mean =(25-2.5)/10


Mean = (22.5)/10

Mean = 2.25

New mean = 2.25 = Your answer


I hope this will help you



-by ABHAY

Answer 2

Answer:h

Step-by-step explanation: