7th Grade Math

GLE 0706.1.6 Read and interpret the language of mathematics and use written/oral communication to

express mathematical ideas precisely. GLE 0706.5.1 Collect, organize, and analyze both single- and two-variable

data. Also addresses SPI 0706.5.1.

Writing Math 489

Describe Data

When you describe something,

you represent it in words.

TAKEOUT The table shows the menu for Takeout Price ($)

Main Dish 8.00

Side Dish 2.50

Dessert 4.00

Lombardo’s Restaurant.

• The price of a dessert is $4.00.


• The price of a main dish is twice as
  much as the price of a dessert.


• A side dish is the least expensive item.


• If you buy one of each item, the cost is more than $10.
  All of these statements describe the data. In what other ways can you
  describe the data?

Practice

1. ADVERTISING The table shows the
   results of a survey in which teens
   were asked to which types of
   advertising they pay attention.
   Describe the data.

Type of

Advertising

Percent of

Teens

Television 80

Magazine 62

Product in a movie 48

E-mail 24

2. SPORTS The table shows the
   number of participants ages 7–17
   for each sport. Describe the data.

Sport (millions)Number

Karate 8.1

Roller hockey 2.7

Snowboarding 9.3

Golf 11.4

3. E WRITE MATH Use the Internet or other resources to find real-world
   data. Display your data in a table. Then have a classmate describe your
   data.

What can you write

about the data

displayed in the

table below?

486_489_C09_CO_895130.indd 489 1/11/10 9:29 AM