OpenUp 6th Math 8.13 Practice Problems and Vocab

The ___ is one way to measure the center of a data set. It is the middle number when the data set is listed in order.

For the data set 7, 9, 12, 13, 14, the ___ is 12.

For the data set 3, 5, 6, 8, 11, 12, there are two numbers in the middle. The median is the average of these two numbers. What is the median?

Here is a table that shows student's scores for 10 rounds of a video game. What is the median score?

When he sorts the class’s scores on the last test, the teacher notices that exactly 12 students scored better than Clare and exactly 12 students scored worse than Clare. Does this mean that Clare’s score on the test is the median? Explain your reasoning.

Which dot plot has a median of 6?

• 
• 
• 
• 

Which dot plot has a median of 12?

• 
• 
• 
• 

Which dot plot has a median of 13?

• 
• 
• 
• 

Which dot plot has a median of 15?

• 
• 
• 
• 

Invent a data set with five numbers that has a mean of 10 and a median of 12.