Name: 
 

Average Known with Missing Data



 1 

The number of minutes students took to complete a quiz is summarized in the table below.

mc001-1.jpg

If the mean number of minutes was 17, which equation could be used to calculate the value of x?
a)
mc001-2.jpg
c)
mc001-4.jpg
b)
mc001-3.jpg
d)
mc001-5.jpg
 

 2 

The table below displays the results of a survey regarding the number of pets each student in a class has.  The average number of pets per student in this class is 2.

mc002-1.jpg

What is the value of k for this table?
a)
9
c)
8
b)
2
d)
4
 



 
Check Your Work     Start Over