Question

Mean of 5 number is 18.if one number exlued their mean 16 find exlued number

Answer 1

Answer:

Step-by-step explanation:

Mean =X = 18

No of observations = 5

Sum of observations =  = 18 x 5 = 90

Let the excluded number be x

New Mean X' = 16

New number of observations = 4

New sum of observations =   16 x 4

 = 64 which is equal to  90 - x

                                                    Thus x= 90 - 64 = 26