Measures of Central Tendency

Measures of Central Tendency

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Multiple Choice

The mean of a data set is the

• difference of all of the numbers in a data set

• sum of all of the numbers in the data set

• sum of all of the numbers in a data set divided by the total numbers in the data set

Multiple Choice

Find the mean of the following data set:

4, 8, 12, 2

• 8

• 6.5

• 12

• 2

Multiple Choice

To find the median of a data set, the numbers must be in order from least to greatest.

• True

• False

Multiple Choice

Find the median of the following data set:

7, 12, 2, 4, 10

• 10

• 2

• 7

• 4

Multiple Choice

You can have more than one mode in a data set.

• True

• False

Range

• Subtract the minimum value (smallest number in the data set) from the maximum value (biggest number) in the data set.

  
  

• Hint: it may help to put the numbers in order from least to greatest

• Example: 4, 12, 6, 8, 14, 7

• Range: 14(max) - 4(min) = 10

Multiple Choice

Find the range of the following data set:

52, 17, 32, 45, 10

• 32

• 10

• 42

• 62

​Will cause the data to skew in its direction

Multiple Choice

What is an outlier?

• A point far away from the other data points.

• Any point NOT on a good line of fit.

• Any point on a good line of fit.

• The y-intercept.

Multiple Choice

Identify the outlier for the given data?

23, 34, 27, 7, 30, 26, 28, 31, 34

• 7

• 23

• 31

• 34

Multiple Choice

Paisley bought toys for her and JoJo. Below are the prices:

$9.00, $9.00, $7.00, $5.00, $9.00, $8.00, $9.00

Find the mean price of the toys.

• $8

• $12

• $9

• $5

Multiple Choice

A poet filed away the drafts she had written for each of her 8 published poems. The files contained:

3 drafts, 4 drafts, 7 drafts, 1 draft, 3 drafts, 2 drafts, 5 drafts, 6 drafts

Find the range of the number of drafts.

• 8 drafts

• 1 draft

• 3 drafts

• 6 drafts

Fill in the Blank

Ms. Howard is checking the amount of treats she has left for Frankie. Below are the number of treats she has left in each box:

9, 7, 4, 7, 7, 5, 9

What is the mode?

Fill in the Blank

What is the median?

6, 2, 7, 0, 4, 3, 0

Multiple Choice

Gabriella’s quiz grades are 88, 92, 92, 96, 98. Gabriella scored a 20 on her sixth quiz. What effect does this score have?

• The low score causes the median to increase.

• The low score causes the median to decrease.

• The low score causes the mean to increase.

• The low score causes the mean to decrease.

Multiple Choice

Every data set must have a mode.

• True

• False

Multiple Choice

For 5 nights, Mr. Adamson tracked the number of pages he read in his book before going to bed:

6 pages, 9 pages, 5 pages, 7 pages, 6 pages

What was the median number of pages that Mr. Adamson read?

• 6

• 5

• None

• 7