Missing Data

Find the value of x: 85, 79, x, 91 if the Average = 87

Find the missing number 5,24, n , 0, when average(mean) is 13 ?

Find the missing number 4, n, 7 , 1, when average(mean) is 6 ?

Find the missing number 25, 3 , n , 14 , when average(mean) is 16 ?

If the mean of a data set is 10, what is the missing piece of data? 
5, 4, 7, 15, 12, ___

• 7

• 17

• 20

• 16

If the mean is 15 what is the missing number in the data
12,13,12,14,18,x

• 21

• 15

• 18

• 20

Selena has 15 students in her class. The mean shoe size is 8.5. She records the shoe sizes below, with one missing. 7.5, 10, 15, 6.5, 7, 9, 9.5, 6, 11, 8.5, 7, 12, 6, 6.5, ____

Find the missing number 4, 5 , 16, 4 , n, when average(mean) is 10 ?

Find the missing number 3, n , 12, 21, when average(mean) is 13?

Find the missing number 24, 8, 10 , 15, 2, n, when average(mean) is 15?