Mean, Median, Mode, and Range

Mean, Median, Mode, and Range

8 + 6 + 12 + 10 + 4 = 40

​

40 ÷​ 5 = 8

​

The mean is 8​

​8, 6, 12, 10, 4

Add all of your numbers together and then divide by how many numbers there are.

Add then divide​

Finding the Mean/Average

Reorder

What are the steps for finding the mean, or average, of a data set? Put them in order from step 1 to step 3.

• Read the question/data set.

• Add all of the numbers up.

• Divide the sum by how many numbers there are.

1

2

3

• 1
• 2
• 3

Multiple Choice

Find the mean of these numbers

7, 5, 10, 2

(add them up and divide by how many there are)

• 6

• 4

• 8

• 5

Order Least to Greatest​

The 6 is in the middle.

Median = 6​

Example 1
​ 3, 5, 6, 9, 12

Order the numbers Least to Greatest, then find the number in the middle.

​Median = Middle

READ: Finding the Median

Example 2

if there are 2 in the middle,

find the MEAN of those​.

MEDIAN = 5.5​

Categorize

Options (4)

Add all the numbers in the data set.

Divide the sum by the amount of numbers in the data set.

Sort the numbers least to greatest.

Find the number in the middle.

Organize these steps into the right categories:

Finding the Mean/Average

Finding the Median

The Mode of this

data set is 80

​80, 80, 83, 85, 87

Order least to greatest, then find the one that occurs the most.

MODE = 4​

​1, 2, 2, 3, 4, 4, 4, 5, 6

Find the Mode (the most)

Multiple Choice

A data set can have more than one mode

• True
• False

Multiple Choice

Find the mode of this data set

70, 75, 77, 79, 79, 80, 81, 83, 85

• 79

• There isn't one.

• 80

• 85

Multiple Choice

What is the mode in this set of numbers:
7, 14, 20, 3, 7, 14, 2, 14, 7

• 7
• 20
• 7 & 14
• none of the above

RANGE

• The largest value in the list is 21, and the smallest is 13, so the range is 21 – 13 = 8.

• The range is found by subtracting the smallest number from the largest number

Match

Match the following:

• How do you find the mean of a data set?

• How do you find the median of a data set?

• How do you find the mode of a data set?

• How do you find the range of a data set?

• What is a statistical question?

Find SUM , and divide by amount of #s

Sort data, find the middle

It's the number(s) that occur the most

Biggest # - smallest #

One with variability in the responses.

• Find SUM , and divide by amount of #s

• Sort data, find the middle

• It's the number(s) that occur the most

• Biggest # - smallest #

• One with variability in the responses.