Math Essentials 11 Test Chapter 1

Math Essentials 11 Test Chapter 2 Mrs. Denise Cameron Name: Block:

 Answer all questions in the space provided.  Use pencil, please.  Answer questions in complete sentences.  When you have finished, check your answers.

1. Blake opened some Skittles and recorded the following information: (6 points) Distribution of Skittles By Colour Colour Number Red 43 Blue 32 Yellow 10 Purple 15 Orange 20 Green 15 a. Why is a pie graph a good choice for this data?

b. What percent of Blake’s Skittles are blue? (Show your work for full points).

c. When Blake constructs the pie graph, how many of the 360 will be used to represent the blue Skittles? (Show your work for full points).

d. Would any other type of graph be suitable for displaying the data?

Explain:

2. Tyler is interested in finding out what CEC students do for lunch on school days. a. Describe the population he would be interested in:

b. Describe a representative sample for the population:

c. Describe a sample that is not representative:

d. Write an unbiased survey question for him to ask.

3. Courtney wanted to find out how many Nova Scotians have finished their Christmas shopping already. She went to the Truro mall and asked the first 25 women that she saw, “Have you finished your Christmas shopping?”

List at least 2 problems with the sample that Courtney chose.  .

4. List at least 4 questions that the following headline raises:

34% of Nova Scotia teenagers use drugs on a regular basis  .  .  .  .

5. Kyle wanted to find out what fast food restaurant is the preferred choice of teenagers in Truro. He randomly selected 30 teenagers from the Truro area. The results of his survey are as follows:

McDonalds, Wendys, Subway, McDonalds, A&W, Burger King, Subway, McDonalds, A&W, McDonalds, A&W, McDonalds, McDonalds, McDonalds, A&W, McDonalds, Wendys, Subway, Wendys, Burger King, Wendys, Wendys, Subway, A&W, Wendys, Subway, Burger King, McDonalds, Subway, McDonalds a. Construct a tally sheet .

b. Construct a bar graph. c. Construct a pie graph (show your calculations)

d. List at least two conclusions that Kyle could make from the data and graphs.