Name:    Lesson 8.3: Communicate about Choosing a Graph

Matching

Jan’s class surveyed parents to determine which method the school should use to send home report cards.
Their survey provided 5 options: send out report cards by mail, send them out by e-mail, telephone home, parents pick up the report cards at the school, or students take the report cards home.
Jan created a pie graph from the results of her class’s survey and arrived at a conclusion that she presented to the principal.

 a. By showing the percentage breakdown of parents’ choices in the pie graph. b. Mailing the report cards is the most preferred method and e-mailing is the second most preferred method. c. By creating a pie graph. d. Parents do not like receiving report cards.

1.

What did Jan reasonably conclude?

2.

How did Jan justify her conclusion?

3.

How did Jan arrive at her conclusion?

4.

What conclusion would be unreasonable?

Multiple Choice
Identify the choice that best completes the statement or answers the question.

5.

Refer to Jan’s report card survey . What is the least preferred method for parents to receive report cards?
 a. in person c. by telephone b. by e-mail d. students taking report cards home

6.

Refer to Jan’s report card survey. What other type of graph could show this data effectively?
 a. line graph b. bar graph c. scatter plot d. pictograph

7.

Keisha is trying to decide which sandwiches they should sell in the school cafeteria. She uses a database to track the kinds of sandwiches that students requested during the week.

 Sandwich Grade 6 Grade 7 Grade 8 Peanut Butter 13 8 5 Ham & Cheese 7 2 11 Tuna 3 5 1 Tomato/Lettuce 5 11 15 Cucumber 10 8 5

She then constucted these pie graphs from the data.

What conclusion can Keisha make from these graphs?
 a. tomato/lettuce sandwiches are the most popular for each grade b. tuna is the least popular sandwich for each grade c. peanut butter is the least popular sandwich for each grade d. cucumber is the most popular sandwich for each grade

8.

Keisha, from question 7, decided to display the data using these bar graphs.

What conclusion can she make from these graphs?
 a. ham & cheese is the least popular sandwich b. tuna is the most popular sandwich for grade 7 c. cucumber is the least popular sandwich for grade 8 d. tomato/lettuce is the most popular sandwich

9.

Keisha, from question 7, also displayed the data using this bar graph.

Why would this type of graph be helpful?
 a. it’s colourful b. it compares the grades c. it shows all of the data in one graph d. it shows how many students were surveyed

10.

What conclusion can Keisha make from the graph in question 9?
 a. tuna is the least popular sandwich b. ham & cheese is the most popular sandwich c. cucumber is the most popular sandwich d. tomato/lettuce is the least popular sandwich