Chapter 9 Review

Question 1

Which kind of display would be best to show the percentages of students' favorite colors?

Accepted Answer

Circle graph / Pie Chart

Question 2

Use the spinner. Find P (NOT purple).

Accepted Answer

5/6

Question 3

A bag contains 2 black marbles and 6 white marbles. Find P(2 black marbles) without replacement

Accepted Answer

2/56

Question 4

4 out of 10 say their favorite color is blue. Out of 200 people, how many probably prefer blue?

Accepted Answer

80 people

Question 5

Mrs. Miller asked the kids on the front row if they understood. What type of sample is this?

Accepted Answer

Convenience Sample

Question 6

How many different ways can you choose 1st, 2nd, and 3rd place in a race with 6 runners?

Accepted Answer

120

Question 7

What is the probability of the spinner landing on an even number?

Accepted Answer

1/2

Question 8

Use the spinner. Find P (yellow, then orange)

Accepted Answer

1/36

Question 9

There are 4 friends going to the movies. In how many different orders can they sit?

Accepted Answer

24

Question 10

Which measure of center should you use to describe two data sets that are both NOT symmetric?

Accepted Answer

Median

Question 11

Talia has 4 shirts and 2 pairs of shorts in her suitcase. How many combinations can she make?

Accepted Answer

8

Question 12

Find the median of the data set: 1, 1, 1, 4, 6, 7, 20

Accepted Answer

4

Question 13

Find the mean of the data set: 3, 5, 6, 2

Accepted Answer

4

Question 14

Beth tossed a coin 30 times and got 8 heads and 22 tails. What does the number 1/2 represent?

Accepted Answer

Theoretical probability of tails, Theoretical probability of heads

Question 15

What is the probability of the spinner landing on green?

Accepted Answer

1/6

Question 16

If the outcome of one event affects the probability of a second event, we call them...

Accepted Answer

Dependent events

Question 17

Which kind of display would be best to show data arranged in intervals?

Accepted Answer

Histogram

Question 18

Which types of sampling give VALID results?

Accepted Answer

Simple Random Sampling and Systematic Random Sampling

Question 19

Which kind of display would be best for showing how the number of students changed over time?

Accepted Answer

Line graph

Question 20

A bag contains 2black marbles and 6 white marbles. Find P(black,then white) without replacement

Accepted Answer

3/14, 12/56

Question 21

A sandwich shop has 5 kinds of meat and 3 kinds of cheese. How many combinations can they make?

Accepted Answer

15

Question 22

Why might this graph be misleading?

Accepted Answer

It looks like there are 4 times as many people on welfare., There is no vertical axis to reference.

Question 23

Beth tossed a coin 30 times and got 8 heads and 22 tails. What does the number 8/30 represent?

Accepted Answer

Experimental probability of heads

Chapter 9 Review

Questions 23

Chapter 9 Review

Questions 23