Worksheet

1

Every student in 7th grade was surveyed on their favorite subject, and the results are displayed in the given circle graph:

a

Which was the most popular subject?

b

What percentage of the class selected History, Phys. Ed., or Languages?

c

If 32 students selected Science, how many students are there in 7th grade?

2

The following circle graphs show the distribution of nuclear weapons owned by countries around the world:

a

Which country has the most nuclear weapons according to the circle graphs?

b

Which two countries have around half of the nuclear weapons that are not owned by Russia or the USA?

c

How many countries have more than 100 nuclear weapons?

3

A technology company wishes to see what MP3 players people are using. They took a small sample and found the following:

Apple: 156

Sandisk: 19

Samsung: 32

Other: 74

Which sector represents Samsung?

4

Mr. Brown did a survey to find out how students usually spend their spare time. Then he recorded the data in the form of a picture graph.

Use the key to answer the following:

a

How many students read books in their spare time?

b

How many students play sports in their spare time?

c

How many students watch TV in their spare time?

d

Which was the least popular activity among the students?

5

The given circle graph shows the results of a class survey where students were asked to nominate their favorite food:

a

Which was the most popular food?

b

Which two foods were equally popular?

6

The following circle graph represents the results of 11th grade class president elections for the year 2020:

a

Who won the elections?

b

What is the percentage of the votes obtained by Jess?

7

The results of a senatorial election in a European country, where 4000 people voted, are shown in the given circle graph:

a

Who won the election?

b

After the election, the winner decides to send promotional packages to everyone they suspect voted for Zorg. How many packages should they prepare?

8

The following circle graph shows the results of a survey where 50 children were asked for their favorite color:

a

Which was the least popular color?

b

How many children chose yellow as their favorite color?

c

How many children chose blue as their favorite color?

9

A marketing company wishes to construct a circle graph to display the market share of smartphone manufacturers. They surveyed 4000 people, and the results are shown in the following table:

Manufacturer | Responses | Angle size |
---|---|---|

\text{Apple} | 2051 | \dfrac{2051}{4000}\times 360\degree= 184.6\degree |

\text{Samsung} | 967 | |

\text{Huawei} | 531 | |

\text{Other} | 451 |

a

Complete the table and find the angle size for each manufacturer, correct to one decimal place.

b

Now, construct a circle graph to represent this data.

10

The given circle graph about the election was displayed on a news program:

a

Describe two mathematical errors with this circle graph.

b

Which of the following images better represents the same information?

A

B

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Given a practical situation, make observations and inferences about data represented in a circle graph