NAME
DATE
12
PERIOD
Chapter 12 Test, Form 1
Assessment
Write the letter for the correct answer in the blank at right of each question.
1. Which yields a biased sample?
A Twenty shoppers outside an electronics store are surveyed.
B Every fiftieth item is pulled off an assembly line.
C Fifteen students are randomly selected from the student body.
D A region is divided into separate areas, and three people are randomly
selected from each area.
1.
2. A computer manufacturer tests every tenth laptop for defects.
Classify the sample.
F biased
G self-selected H stratified
J systematic
2.
3. Which best describes the distribution of the following data set?
82, 94, 90, 97, 96, 75, 91, 88, 84, 96, 82, 86, 98
A symmetric distribution
C negatively skewed distribution
B positively skewed distribution
D simple distribution
3.
4. Find the mean absolute deviation of {2, 6, 5, 9, 3}.
F 2
G √6
H 6
J 10
4.
D 9
5.
J 2
6.
5. Find the standard deviation of {7, 8, 11, 10}.
A
3
2
5
2
B √
C
5
2
6. Two dice are rolled. How many outcomes are possible?
F 36
G 30
H 6
7. How many ways can 4 chairs be filled by 6 children if order is important?
A 360
B 720
C 15
D 12
7.
8. How many ways can a committee of 4 people be chosen from a group of
8 people if the members are selected in no particular order?
F 840
G 70
H 28
J 35
8.
A bag contains 2 blue, 4 green, and 3 white chips. Find each probability.
9. randomly drawing a blue chip, replacing it, then drawing a green chip
A
1
12
B
2
3
C
8
81
D
7
9
J
1
12
9.
10. randomly selecting 2 white chips without replacement
F
7
9
G
8
81
H
2
3
10.
11. A card is randomly drawn from a standard deck of cards. What is the
probability that it is a two or a heart?
A
4
13
Chapter 12
B
17
52
C
1
26
D
61
2
13
11.
Glencoe Algebra 1
NAME
DATE
12
Chapter 12 Test, Form 1 (continued)
The table shows the attendance of 300 ninth
graders over the past month.
12. Find the probability that a randomly-chosen ninth
grader will be absent 2 days next month.
F
11
60
G
2
5
PERIOD
H
17
30
J
1
4
Number of
Absences
Number of
Students
0
50
1
120
2
75
3 or more
55
12.
13. Find the probability that a ninth grader is absent fewer than
2 days next month.
11
60
A
B
2
5
C
17
30
D
1
4
13.
14. What is the range of the data set obtained by subtracting 4 from each
value in the following set? 8, 12, 6, 22, 53, 12, 16, 41, 35
F 43
G 45
H 47
J 51
14.
15. Describe the center and spread of the data using the five-number summary
or mean and standard deviation. 20, 15, 18, 32, 26, 19, 25, 20, 30, 42
A 15, 20, 25, 32, 42
C 24.7, 7.7
B 15, 19, 222.5, 30, 42
D 22.5, 27
15.
16. What is the mode of the quiz scores after each score is multiplied by 2.5?
30, 40, 34, 28, 26, 32, 40, 34, 38, 26, 34, 24, 32, 34, 38, 34
F 34
G 40
J 100
H 85
16.
There were 22 heads and 28 tails in 50 tosses of a coin.
17. What is the experimental probability that a coin toss results in a head?
14
11
1
D 1
A
B
C
25
25
2
17.
18. What is the theoretical probability that a coin toss results in a head?
F
14
25
G
11
25
H
1
2
J 1
18.
For Question 19 and 20, which of these could you use to simulate the
outcome of each event? Choose each answer from:
A drawing a marble from a bag of 3 white marbles and 2 black marbles
B using a spinner with 75% of the spinner white and 25% black
C rolling a die and using only 3 numbers
D tossing a coin four times
19. picking a novel from a shelf that contains 3 novels and 2 biographies
19.
20. having rain or no rain on a day when the probability of rain is 75%
20.
Bonus
Two people are each asked to choose a red, yellow, or blue marble
from a bag with replacement. What is the probability they choose
the same color?
Chapter 12
62
B:
Glencoe Algebra 1