7th Grade Math

542 Statistical Displays

Example 1 Select an appropriate display for each situation. Justify your reasoning.

1. the temperatures for the past week


2. the number of people who have different kinds of pets


3. the percent of different ways electricity is generated

Example 2 4. TELEVISION Use the table at the right. Select an Hours of

Television

Watched

Weekly

Test

Score

478

767

192

381

861

appropriate display to show a relationship between

the number of hours of television watched and test

scores. Justify your reasoning. Then construct the

display. What can you conclude from your display?

55 SANDWICHES The prices of sandwiches at a restaurant

are $4.50, $5.59, $3.99, $2.50, $4.99, $3.75, $2.99, $3.29,

and $4.19. Select an appropriate display to determine

how many sandwiches range from $3.00 to $3.99.

Justify your reasoning. Then construct the display. What can you

conclude from your display?

= Step-by-Step Solutions begin on page R1.

Extra Practice begins on page EP2.

Example 1 Select an appropriate display for each situation. Justify your reasoning.

6. the number of students that favor chocolate or vanilla as a frosting
   77 the median age of members in a community band


7. the resale value of a car over time


8. the percent of people that drink 0, 1, 2, 3, or more than 3 glasses of water
   a day

Select an appropriate display for each situation. Justify your reasoning.

Then construct the display. What can you conclude from your display?

Example 2

10. Favorite Movies
    Type of
    Movie

Number

of People

Comedy 48

Action 17

Drama 5

Horror 2

11. Temperature
    (°F)

Depth of Ice

(inches)

10 5.1

13 4.5

19 3.8

25 2.8

30 1.1

12.

Age Group Texts per DayNumber of

11–15 25

16–20 23

21–25 17

26–30 10

13. Number of Push-ups
    56 28 28 54
    55 28 25 23
    54 53 23 20
    57 52 17 10
    28 56 51 19

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