Best Measure of Center and Spread

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

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 number of pages that Carolyn wrote in her journal each day from Monday to Friday is shown below: 
9, 8, 12, 6, 10
What is the mean number of pages she wrote per day?

• 5

• 6

• 9

• 11

The mode score on the 6th grade math test was 94! Which of these interpretations must be correct?

• 94 was the highest score on the test.

• More students received a 94 than any other score

• No student scored below a 94

• A score of 91 was slightly below average.

A class scored 83,83,87,87,88,88,91,94,95,96,98,100,100 on a test, but then a student scored a 28.

The mean will ​ (a)  

The median will ​ (b)  

The ​ (c)   is the best measure of center for this data.

• decrease

• increase

• stay the same

• go up

• go down

• median

• mean

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

• Median

• 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.

• Mode

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

• Range

• 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

Which statement below is true about the given table of student heights in inches?

• Group A has a larger mean and a larger standard deviation.

• Group B has a larger mean and a larger standard deviation.

• Group A has a larger mean and a smaller standard deviation.

• Group B has a larger mean and a smaller standard deviation.

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

• Range

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

• Mode

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

• Median

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

Given the set of data below, what would be the most meaningful measure?
1, 1, 1, 1, 1, 1, 1, 1, 1, 21

• Mean

• Median

• Mode

• Range