Topics
9. Statistics
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United States of AmericaVA
Grade 6

9.03 Displays of numerical data

Lesson
Practice

Are you ready?

Do you know the different ways to display data?

Examples

Example 1

A grocery store created the following pie graph of fruit sold in their store:

A pie graph that shows the percentage of fruits purchased. Ask your teacher for more information.
a

What is the least common fruit sold?

A
Apples
B
Blueberries
C
Limes
D
Oranges
Worked Solution
Create a strategy

Find the smallest percentage from the pie graph.

Apply the idea

We can see that the smallest percentage is 8\%\, for limes.

So, the least common fruit sold is limes which is option C.

b

What is the second most common fruit sold?

A
Apples
B
Oranges
C
Grapes
D
Blueberries
Worked Solution
Create a strategy

Find the second largest percentage from the pie graph.

Apply the idea

We can see that the second largest percentage is 27\%\, for apples.

So, the second most common fruit sold is apples which is option A.

Effective data displays

This video explores things to think about when you are choosing what type of graph suits the data you want to display.

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Examples

Example 2

This column graph and pie graph show the number of times that each type of sport is played.

A bar graph that shows the number of sport played. Ask your teacher for more information.
A pie chart that shows the number percentage of sport played. Ask your teacher for more information.
a

In which display is it easier to see the sport that was played the most?

A
Pie graph
B
Column graph
Worked Solution
Create a strategy

In the column graph, we need to look for the column with the greatest height, and for the pie chart, we need to look for the biggest section.

Apply the idea

The pie chart makes it easier to see the sport played the most, so the correct answer is option A.

b

In which display is it easier to see the sports that were played a similar amount of times?

A
Pie chart
B
Column graph
Worked Solution
Create a strategy

In the column graph, we need to look for the columns of similar height, and for the pie chart, we need to look for the sections of similar size.

Apply the idea

It is easier to find the sports played a similar number of times in the column graph, so the correct answer is option B.

Idea summary

A bar graph is also called a column graph.

Different graphs are useful to display different types of data.

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