Choosing Measures of Center

To find the average of a set of numbers, add up all the items and divide by...

• 2

• The minimum

• The maximum

• The number of items

What is the mode?

• happening the most

• the average

• biggest - smallest

• the middle #

In order to find the median, the data must be sorted from least to greatest first.

• True

• False

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

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 most appropriate measure of center for this data distribution is __________.

• mean

• median

• mode

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

Which measure of center BEST represents the data?

Notice - they are given to you in the picture!

• The mode because it near the center

• The mean because it is centered in the data (8 above; 8 below)

• The median because the mean is NOT centered in the data

What measure of center should you choose and why?

• Mean, because the data is clustered together.

• Mean, because there is an outlier.

• Median, because the data is clustered together.

• Median, because there is an outlier.

The histogram shows the 100-meter dash times for athletes on the track team. Which measure of center is the most appropriate for the data set?

• Range

• IQR

• Mean

• Median