Lesson 10-2 Pages 418-421 Making Circle Graphs. What you will learn! How to construct and interpret...

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Lesson 10-2 Pages 418-421 Making Circle Graphs

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Circle graph

Transcript of Lesson 10-2 Pages 418-421 Making Circle Graphs. What you will learn! How to construct and interpret...

Page 1: Lesson 10-2 Pages 418-421 Making Circle Graphs. What you will learn! How to construct and interpret circle graphs.

Lesson 10-2 Pages 418-421

Making Circle Graphs

Page 2: Lesson 10-2 Pages 418-421 Making Circle Graphs. What you will learn! How to construct and interpret circle graphs.

What you will learn!

How to construct and interpret circle graphs.

Page 3: Lesson 10-2 Pages 418-421 Making Circle Graphs. What you will learn! How to construct and interpret circle graphs.

Circle graphCircle graph

Page 4: Lesson 10-2 Pages 418-421 Making Circle Graphs. What you will learn! How to construct and interpret circle graphs.

What you really need to know!

A graph used to compare parts of a whole is called a circle graph. In a circle graph, the percents add up to 100. When percents are not given, you must first determine what part of the whole each item represents.

Page 5: Lesson 10-2 Pages 418-421 Making Circle Graphs. What you will learn! How to construct and interpret circle graphs.
Page 6: Lesson 10-2 Pages 418-421 Making Circle Graphs. What you will learn! How to construct and interpret circle graphs.

Example 1:

In a survey, a group of middle school students were asked to name their favorite sport. The results are shown in the table. Make a circle graph of the data.

SportSport PercentPercent

FootballFootball 30%30%

BasketballBasketball 25%25%

BaseballBaseball 22%22%

TennisTennis 8%8%

OtherOther 15%15%

Page 7: Lesson 10-2 Pages 418-421 Making Circle Graphs. What you will learn! How to construct and interpret circle graphs.

SportSport PercentPercent Degrees of CircleDegrees of Circle

FootballFootball 30%30% 360 x .3 = 108360 x .3 = 108°°

BasketballBasketball 25%25% 360 x .25 = 90360 x .25 = 90°°

BaseballBaseball 22%22% 360 x .22 = 79.2360 x .22 = 79.2°°

TennisTennis 8%8% 360 x .08 = 28.8360 x .08 = 28.8°°

OtherOther 15%15% 360 x .15 = 54360 x .15 = 54°°

Page 8: Lesson 10-2 Pages 418-421 Making Circle Graphs. What you will learn! How to construct and interpret circle graphs.
Page 9: Lesson 10-2 Pages 418-421 Making Circle Graphs. What you will learn! How to construct and interpret circle graphs.

15% Other

30% Football25%

Basketball

22% Baseball

8% Tennis

Page 10: Lesson 10-2 Pages 418-421 Making Circle Graphs. What you will learn! How to construct and interpret circle graphs.

Example 2:

Gina has the following types of movies in her DVD collection. Make a circle graph of the data.

Type of MovieType of Movie NumberNumberActionAction 2424

ComedyComedy 1515Science FictionScience Fiction 77

Page 11: Lesson 10-2 Pages 418-421 Making Circle Graphs. What you will learn! How to construct and interpret circle graphs.

Type of MovieType of Movie NumberNumberActionAction 2424

ComedyComedy 1515Science FictionScience Fiction 77

PercentPercent52% (0.52)52% (0.52)33% (0.33)33% (0.33)15% (0.15)15% (0.15)

DegreesDegrees187187°°119119°°5454°°

Page 12: Lesson 10-2 Pages 418-421 Making Circle Graphs. What you will learn! How to construct and interpret circle graphs.
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52% Action

33% Comedy

15% Science Fiction

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Example 3:

The circle graph shows the percent of voters in a town who are registered with a political party. Use the graph to describe the voters in this town.

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Independent/Others

3%

Republicans42%

Democrats55%

More than half are Democrats and only

a very few are Independents.

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Page 420

Guided Practice

#’s 3-6

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Page 18: Lesson 10-2 Pages 418-421 Making Circle Graphs. What you will learn! How to construct and interpret circle graphs.

Pages 418-419 with someone at home and study

examples!

Read:

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Homework: Page 420-421

#’s 7, 8, 10-13

#’s 17-26 all

Lesson Check 10-2

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Page

587

Lesson 10-2

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Navy

Sky/L-Blue

Aqu

amar

ine

Other

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55 mph

65 mph

70 mph 75 mph

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Driving Alone

Carpool

Public Transit

Other

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Driving Alone

Car

pool

Public Transit

Other

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Mammals

Birds Reptiles

Amphibians

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Northeast

Midwest

South West