Algebra 1
Unit 8 Multiple Choice Review
Name:
1. A spinner was spun 100 times. The results are shown in the table below. Which statement is true?
a.
b.
c.
d.
The range for the data is 30.
The distribution of the data is skewed.
The outlier for the data is in section 5.
The distribution of the data is symmetrical.
2. The list below shows the most recent test scores for students in Mr. Garcia’s study group. Which box-and-whisker
plot correctly represents the data in the list? {78, 90, 94, 72, 80, 68, 72, 88, 94, 98, 86, 96}
a.
b.
c.
C.
d.
3. The number of leafhoppers found on potato leaves that were 3 to 6 inches in length are displayed in the box-andwhisker plot below. Which statement about the information presented in the graph is correct?
a.
b.
c.
d.
The greatest number of leafhoppers found was 63.
The greatest number of leafhoppers found was 50.
The median number of leafhoppers found was 48.
The median number of leafhoppers found was 37.
4. The following list shows the number of baby goldfish born to each of 10 female goldfish. What is the mode of this
data? {4, 2, 6, 5, 7, 3, 4, 5, 4, 9}
a.
b.
c.
d.
4
4.5
4.6
5
5. Cheryl puts some of her earnings in her savings account. The table below lists the amount of money she had in the
account after working different number of days. The graph below shows this information in a scatter plot. If d
represents the number of days worked and m represents the amount of money saved, which equation MOST closely
represents the data? Round to the nearest whole number.
a.
b.
c.
d.
𝑑 = 10𝑚 + 43
𝑚 = 10𝑑 + 43
𝑑 = 9𝑚 + 54
𝑚 = 9𝑑 + 54
6. The scatterplot below shows the relationship between foot length, in inches, and the length from the inner elbow to
the wrist, in inches, for fourteen people who were sampled. A line that approximates these data is shown on the graph.
Based on this line, what is the predicted length, in inches, from the inner elbow to the wrist for a person with a foot
length of 12 inches?
a.
b.
c.
d.
10
11
12
13
Line of regression: y = x
7. Trevor recorded the amount of material collected for recycling at his school for 5 weeks. Trevor calculated a line of
best fit for the data to model the amount collected, y, as a function of time, x. He found the correlation coefficient to
be between -0.7 and -1. Which statement BEST describes the correlation among the data?
a.
b.
c.
d.
There is a weak correlation in which the amount collected increased as time increased.
There is a weak correlation in which the amount collected decreased as time increased.
There is a strong correlation in which the amount collected increased as time increased.
There is a strong correlation in which the amount collected decreased as time increased.
8. Consider the graph below. Which correlation coefficient and interpretation BEST represents the given points?
a.
b.
c.
d.
0.625, no correlation
0.791, no correlation
0.625, positive correlation
0.791, positive correlation
x
1
2
3
4
5
y
3
4
6
4
8
9. A correlation coefficient, r, was found to be -0.79 for a set of variables, x, and y. What is the BEST interpretation of
the coefficient?
a.
b.
c.
d.
The value of x does not vary with the value of y.
The value of x decreases when the value of y decreases.
The value of x increases when the value of y decreases.
The value of x increases when the value of y increases.
10. Use the data below. What is the equation in slope-intercept form of the median-fit line?
a.
b.
c.
d.
X
10
11
12
13
14
15
16
𝑦 = 15.6𝑥 − 111.25
𝑦 = −111.25𝑥 + 15.6
𝑦 = 18.3𝑥 − 142.4
𝑦 = −142.4𝑥 + 18.3
y
56
63
62
76
89
200
102
11. A card is randomly selected from a standard deck of cards. What is the probability that an 8 is drawn?
1
A. 26
1
B. 13
14
C. 52
3
D. 13
12. Jena randomly draws 2 cards from a standard deck one at a time without replacement. Find the probability that you
draw a spade and then a heart.
1
A. 52
1
B. 51
13
C. 204
13
D. 52
13. You roll a fair die. What is the probability that you roll a 5?
1
A. 6
B.
5
6
Answers: b, d, d, a, d, c, d, d, c, c, d, 13/52, a
C.
1
3
1
D. 2