Dot Plots and Box Plots

Solving Problems Involving Dot Plots

How can you use proportional reasoning to solve problems involving dot plots?

Lets do a quick review!

Fill in the Blanks

Find the Mean of the Data Set:

7, 8, 3, 4, 8

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Fill in the Blanks

Find the Median of in the Data Set:

2, 9, 7, 4, 6, 1

Fill in the Blanks

Find the Median in the Data Set:

7, 8, 3, 4, 8

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Fill in the Blanks

Find the Mode in the Data Set:

7, 8, 3, 4, 8

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Fill in the Blanks

Find the Range in the Data Set:

7, 8, 3, 4, 8

Multiple Choice

Find the Mean, Median, Mode, and Range of the Data Set:

2, 10, 6, 8, 10, 4, 10, 4, 9

• Mean: 7 Median: 8 Mode: 10 Range: 12

• Mean: 7 Median: 8 Mode: 10 Range: 8

• Mean: 7 Median: 6 Mode: 4 Range: 8

• Mean: 7 Median: 8 Mode: 4 Range: 8

​Let's look at a

DOT PLOT

Multiple Choice

The dot plot shows the number of letters in the first names of randomly selected students at a local high school.

How many of 160 students’ first names would you expect to be less than 8 letters long?

• 12

• 20

• 74

• 148

​Let's look at a

BOX PLOT

Box plots are a way of representing the spread of data.

​

​Some text here about the topic of discussion.

How to read a box plot

​Minimum or smallest value

Maximum or largest value

​Range of data= Maximum-Minimum

Multiple Choice

What is the range of math quiz results from Mrs. Sanchez's class?

• 75

• 20

• 95

• 60

How to read a box plot

​median of all data

Multiple Choice

What is the median of math quiz results from Mrs. Sanchez's class?

• 50

• 63

• 70

• 75

How to read a box plot

​Lower Quartile Q1

​Upper Quartile Quartile Q3

​25%

​25%

​25%

​25%

Multiple Choice

What percentage of scores were between 20 and 30?

• 0%

• 25%

• 50%

• 75%

Multiple Choice

What percentage of scores were between 30 and 70?

• 0%

• 25%

• 50%

• 75%

How to read a box plot

​Interquartile

​Interquartile Range:

Q3-Q1​

​Q1

​Q3

Multiple Choice

What is the interquartile range of these scores?

• 50

• 70

• 40

• 30

Multiple Choice

What is the median?

• 62

• 58

• 66

• 60

Multiple Choice

What is the interquartile range (IQR)?

• 4

• 64

• 60

• 8