Mean, Median, and Mode

Definitions:

• Mean: Average

• Median: Middle number

• Mode: The number that appears the most

Mean

• The average of a set of data

• To find the mean, you must add all of the numbers, then divide by the amount of numbers there are.

Multiple Choice

To find the _________ you add up all the numbers and then divide by how many numbers you have.

• Mean
• Median
• Mode
• Range

Multiple Choice

Find the Mean of:
8, 14, 32, 6, 15

• 15
• 175
• 75
• 12

Multiple Choice

Find the mean of these numbers:
2, 57, 38, 42, 6

• 29
• 38
• 50
• 145

Median

The number in the middle AFTER ordering the numbers from least to greatest.

Example: 12, 18, 22, 13, 11, 20, 19

Order from least to greatest: 11, 12, 13, 18, 19, 20, 22

The number in the middle should be 18.

Median- 18

Median

If there are 2 numbers in the middle:
Add the 2 numbers together, then divide by 2.
Example: 15, 16, 18, 9, 18, 17, 19, 19, 4, 36
Order: 4, 9, 15, 16, 17, 18, 18, 19, 19, 36
Middle numbers are 17 and 18.
Add- 17 + 18 = 35
Divide by 2-  35 /2 = 17.5

Median- 17.5 

Multiple Choice

To find the ________ you put all numbers in order from least to greatest and find the number that is in the middle.

• Mean
• Median
• Mode
• Range

Multiple Choice

Find the median of these numbers:
4,2,7,4,3

• 2
• 5
• 7
• 4

Multiple Choice

What is the median of:
6, 12, 16, 11, 8, 4, 1, 11, 4

• 11
• 6
• 8
• 7

Mode

The number that appears the most.

Order the numbers from greatest to least first. This will help with noticing if a number repeats.

Example: 21, 15, 26, 29, 21, 18

Order: 15, 18, 21, 21, 26, 29

Mode- 21

Mode

If there is not a number that does not repeat, then you MUST answer with NO MODE.

There may also be more than one mode.

Example: 1, 6, 9, 15, 17

Mode: No mode

Example: 8, 12, 15, 15, 16, 20, 20

Mode: 15, 20

Multiple Choice

A data set can have more than one mode

• True
• False

Multiple Choice

What is the mode of the data below?

12 , 14 , 5 , 12 , 5 , 12 , 11

• 5

• 12

• 5 and 12

• 11.8

Multiple Choice

At Tim Horton's the number of Timbits in a bag can vary. Help Donald find the mode.
12,15,15,10,13,12,11,10,15

• 13 and 10

• 12 and 13

• 11
• 15

Multiple Choice

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

• 99 was the highest score on the test.
• More students received a 94 than any other score
• No student scored below a 50
• A score of 91 was slightly below average.

Multiple Choice

In the first round of the playoffs, Ben Simmons points (in each game) was listed below. How many points per game is he averaging in the playoffs?

17 , 24 , 19 , 17 , 14

• 16.8

• 17.8

• 17

• 18.2

Multiple Choice

What is the median of the data below?

20 , 3 , 17 , 1 , 5

• 5

• 17

• 19

• 9.2

Multiple Choice

What is the mean of the data below?

1 , 5 , 10 , 11 , 20

• 10

• 9.4

• 19

• 9.1