Question

Mean of 8 observations is 25 if one observation 11 is excluded find the mean of the remaining

Answer 1

Answer:

mean is equal to 25

Step-by-step explanation:

11+mean of seven is equal to 25

mean of seven is equal to 25-11 14

Answer 2

Answer:

mean of remaining observations = 27

Step-by-step explanation:

mean, x =25

let sum of observations be y

no. of observations= 8

y/8=x

y/8=25

y=25×8

y=200

if eleven is excluded,

sum of remaining observations = y-11

no. of remaining observations =7

new mean =y-11/7

= 200-11/7

=189/7

new mean = 27