Measures of Center (Mean/Median/Mode)

Measures of Center

By Grace Fanshaw

​This is your AVERAGE

Add up all your data and then divide by HOW MANY numbers you added up.

Mean

​When the data is in NUMERICAL ORDER (least to greatest) the median is the number in the middle
When you have two numbers in the middle, add them and divide by 2

Median

​This is the number that appears most frequent in the set of data.

Mode

Multiple Choice

Which measure of center describes the average?

• Mean

• Median

• Mode

Multiple Choice

Which measure of center describes the middle?

• Mean

• Median

• Mode

Multiple Choice

Which measure of center describes the most frequent number?

• Mean

• Median

• Mode

Match

Sort the definitions to their words

• The Average

• The Middle Number

• The Most Frequent

Mean

Median

Mode

• Mean

• Median

• Mode

Reorder

In the data set: 6, 11, 4, 9, 1

Put them in numerical order

• 1

• 4

• 6

• 9

• 11

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

An outlier is a piece of data that is either much GREATER or much LESS than the rest of the data.

The mean will either be GREATER or LESS because of the outlier​

Outliers

Multiple Choice

Which measure of center do outliers affect most?

• mean

• median

• mode

Hotspot

Where is the outlier?

Hotspot

Where is the outlier?

Math Response

Find the MEAN for this data set:

3, 7, 4, 6, 0

Type answer here

Correct Answer: 4

Deg^°

Rad

Multiple Choice

Is there a mode?

5, 6, 3, 4, 2, 18

• Yes

• No

Math Response

Find the MEDIAN for this data set:

3, 7, 4, 6, 0

Type answer here

Correct Answer: 4

Deg^°

Rad

Multiple Choice

Look at the median and ranges you calculated for both cities and pick the correct statement.

• Charleston has a lower median temperature than Atlanta. The temperatures in Charleston did not vary as much as in Atlanta.

• Charleston has a lower median temperature than Atlanta. The temperatures in Atlanta did not vary as much as in Charleston.

• Atlanta has a lower median temperature than Charleston. The temperatures in Charleston did not vary as much as in Atlanta.

• Atlanta has a lower median temperature than Charleston. The temperatures in Atlanta did not vary as much as in Charleston.

Match

For this data set, find the MEAN, MEDIAN, and MODE:

0, 1, 2, 2, 2, 3, 3, 3, 3, 6

• 2

• 2.5

• 3

• 6

Mean

Median

Mode

Outlier

• Mean

• Median

• Mode

• Outlier

Draw

Make a dotplot for this data:

0, 3, 7, 1, 1, 4, 6, 1, 3, 4, 8, 10