Question

Mean of 5 numbers is 27 if one number is excluded their mean is 25 . Find the excluded observation

Answer 1

Answer:

35

Step-by-step explanation:

Sum of 5 number=27*5=135

Sum of 4 numbers=25*4=100

Excluded number=Sum of 5 no. -Sum of 4 no.

=135-100=35

Answer 2

≡QUESTION≡

Mean of 5 numbers is 27 if one number is excluded their mean is 25 . Find the excluded observation.

                                                   

║⊕ANSWER⊕║

Mean of 5 numbers = 27

Sum of 5 numbers = 27 x 5

                                 = 135

When one number is excluded,

Mean = (sum of 5 numbers - excluded no.)/4

Mean of the 4 numbers = 25

Sum of the 4 numbers = 4 x 25

                                       = 100

∴ The excluded observation = 135 - 100

                                                  = 35