Measures of Center and Statistical Questions

Find the mode:
5, 0, 9, 9, 3, 0, 5, 5, 4

• 9

• 5

• 3

• 7

Find the median:
5, 6, 3, 9, 0, 4, 1, 2, 7

• 4

• 4.1

• 5

• 4.5

When finding the median, what do you do if there are two middle numbers?

• Add them together and divide by 2

• Write them both as the answer

• Give up

• Pick one

The number of miles that Jenna cycled each week for a 7-week period is shown: 
36, 42, 28, 52, 48, 36, 31 
What is the median number of miles Jenna cycled?

• 24

• 36

• 39

• 52

Annabel is comparing the distances that two electric cars can travel after the battery is fully charged. Use the measures of center to make an inference about the data. Use the drop-down menus to complete your answer. ​ (a)   can travel further than ​ (b)   after the battery is fully charged.

• Car B

• Car A

The tennis team needs to raise money by selling raffle tickets. The box plots show how many tickets were sold over 15 days by 3 students. What is the appropriate measure of center for Daniel?​ (a)  

• Median

• Mean

• Range

• IQR

The box plot shows the test scores in Mr. Jordan's class. The appropriate measure of center is the ​ ​ ​ (a)  

• Median

• Mode

• Mean

• Range

• IQR

Read the definition and match each word to the correct box.

• Mean

• Measure of center that lies in the middle of a set of data arranged in order

• Mode

• Measure of center that represents the fair share of a set of data.

• Median

• Measure of center that occurs most often in a data set.

• Range

• Measure of variation that represents the spread of a set of data.

Read the definition and match each word to the correct box.

• Mode

• Measure of variation that represents the spread of a set of data.

• Range

• Measure of center that occurs most often in a data set.

• Mean

• Measure of center that represents the fair share of a set of data.

• Median

• Measure of center that lies in the middle of a set of data arranged in order

The frequency table shows the gas mileages of several vehicles. The data would be ​ (a)   so the best measure of center would be the ​ (b)   and the best measure of variation would be the ​ (c)   ​ ​

• Skewed Right

• median

• Interquartile Range

• Skewed Left

• Symmetrical

• Mean

• Mean Absolute Deviation