Question

the mean of 5 number is 18. If one number is excluded there mean is 16 . find the excluded number

Answer 1

I hope it will help you

Answer 2

Answer:

The mean of five numbers is 18

mean = sum of all observations/total number of observations

18 = x/5

transposing 5 to the other side

18x5 = x

90 = x (old mean)

now since one number is excluded

x/4 = 16

x = 16x4

so x = 64 (new mean)

to find out the number that was excluded we just need to subtract the old and the new mean

90 - 64 = 26

Step-by-step explanation: