7th Grade Math

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Statistical Displays

PART A BCDE

Multi-Part

Lesson 3

GLE 0706.5.1

Collect, organize, and analyze

both single- and two-variable

data. GLE 0706.5.2 Select,

create, and use appropriate

graphical representations of

data. Also addresses

GLE 0706.1.8, SPI 0706.5.1,

SPI 0706.5.2.

Lesson 3A Statistical Displays 513

Spreadsheet Lab:

Circle Graphs

A type of display used to compare categorical data is a circle graph.

Circle graphs are useful when comparing parts of a whole.

MAGAZINES The spreadsheet below shows the results of a survey

in which students were asked about their favorite type of

magazine. Make a circle graph of the data.

Enter the data in a spreadsheet as shown.

1

4

3

2 5 6 7 8 9

10

11

12

13

Magazine Preferences

Comics

Fashion

Entertainment

News

Sports

Other

2 7 5 3 6 1

Sheet 1 Sheet 2 Sheet 3

ACD E F

Magazine Preferences

Comics

Fashion

Entertainment

News

Sports

Other

B

Select the information in cells A1 to B6. Click on the

Chart Wizard icon. Choose the Pie chart type. Click Next

twice. Enter the title. Then click Next and Finish.

1. MAKE A CONJECTURE Use the graph to determine which types of
   magazines were preferred by _^13 and 25% of the students. Explain
   your reasoning.


2. COLLECT THE DATA Collect some data that can be displayed in
   either a circle or bar graph. Then use a spreadsheet to make both
   types of displays. When would a bar graph be more useful? a
   circle graph? Justify your selection.

Main Idea

Use technology to

create circle graphs.

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