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WorksheetsUnit 4 Test: Review
Total questions: 71
Worksheet time: 52mins
Name
Class
Date
1.
There are two measures of center.
a)
True
b)
False
2.
The mean is a measure of center.
a)
True
b)
False
3.
The mean should be used as the measure of center when there are outliers.
a)
True
b)
False
4.
The Interquartile Range (IQR) is found by subtracting Q3 from Q1 (Q1 - Q3).
a)
True
b)
False
5.
Complete the following: "The following box-and-whisker plot is _______________."
a)
skewed right
b)
skewed left
c)
symmetric
6.
Complete the following: "The following box-and-whisker plot is _______________."
a)
skewed right
b)
skewed left
c)
symmetric
7.
Determine which option is not true.
a)
Class #1 had a greater median.
b)
Class #2 has a greater max.
c)
Class #2 had a greater Q3.
d)
Class #1 had a lower Q1.
8.
Find the Interquartile Range (IQR) of the following box-and-whisker plot.
a)
8
b)
3
c)
5
d)
6
9.
a)
29
b)
31
c)
32
d)
23
10.
a)
A
b)
B
c)
C
d)
D
11.
a)
14
b)
16
c)
11
d)
20
12.
a)
25
b)
30
c)
40
d)
31
13.
The data below represents the number of runners on each cross country team in the Northern Conference.
12, 15, 15, 17, 19, 19, 20, 22, 24
Which box plot correctly summarizes the data?
12, 15, 15, 17, 19, 19, 20, 22, 24
Which box plot correctly summarizes the data?
a)
Top
b)
Middle
c)
Bottom
14.
A store manager counts the number of customers who make a purchase in his store each day.
The data are as follows.
10, 11, 8, 14, 7, 10, 10, 11, 8, 7
Which dot plot represents the data?
The data are as follows.
10, 11, 8, 14, 7, 10, 10, 11, 8, 7
Which dot plot represents the data?
a)
A
b)
B
c)
C
d)
D
15.
What is the range in gas mileage for cars?
a)
2
b)
10
c)
4
d)
6
16.
Is the SUV's dot plot skewed to the left or right?
a)
Left
b)
Right
17.
What is the difference in the median gas mileage?
a)
0
b)
5
c)
7
18.
What is the difference in IQR's?
a)
1
b)
2
c)
3
d)
4
19.
What is the difference in Q3's?
a)
None
b)
2
c)
3
d)
4
20.
What percentage of males surveyed drive sports cars?
a)
35%
b)
65%
c)
16.25%
d)
25%
21.
What percentage of SUV's are driven by the women in reference to the total amount of people surveyed?
a)
83.25%
b)
65%
c)
56.25%
d)
86.50%
22.
How many people purchased no food and no drink?
a)
60
b)
10
c)
20
d)
200
23.
Brandon has answered 20 out of the 25 questions on a test. What percentage of the test questions has Brandon answered?
a)
12.5%
b)
45%
c)
80%
d)
95%
24.
The two-way frequency table shows how many cars were sold at a car dealership in a month. What color is the least popular at the car dealership?
a)
Red
b)
White
c)
Blue
d)
Green
25.
What percentage of girls have blonde hair?
a)
30
b)
32
c)
28
d)
40
26.
What is the conditional relative frequency for selecting a teen who likes chocolate in relation to the total amount of teens?
a)
.112
b)
.267
c)
.164
d)
.056
27.
What is the marginal frequency of children?
a)
77
b)
107
c)
22
d)
65
28.
True or False: "268 people were surveyed."
a)
True
b)
False
29.
What type of correlation describes the scatter plot?
a)
Positive
b)
Negative
c)
No Correlation.
30.
What type of correlation describes the scatter plot?
a)
Positive
b)
Negative
c)
No Correlation
31.
Which of the following is line of best fit to the graph of the data below.
a)
f(x) = 5x + 1.82
b)
f(x) = 1.82x + 5.02
c)
f(x) = 3.2x + 4
d)
Cannot be determined.
32.
Find the slope of the line.
a)
-.4
b)
-2.5
c)
.50
d)
-.25
33.
Which scatter plot shows a linear relationship between x and y?
a)
A
b)
B
c)
C
d)
D
34.
True or False: "According to the residual plot shown, a linear model would be most appropriate."
a)
True
b)
False
35.
True or False: "According to the residual plot shown, a linear model would be most appropriate."
a)
True
b)
False
36.
Which sentences describes the relationship shown in the scatter plot?
a)
As the temperature increases, the amount of visitors increases.
b)
As the temperature decreases, the amount of visitors increases.
c)
As the number of visitors increase, the temperature decreases.
d)
No correlation.
37.
Use the equation to predict how far this person will travel after driving for 10 hours.
a)
10.25 miles
b)
617.5 miles
c)
700.35 miles
d)
.19 miles
38.
The linear regression equation is y = 61.93x - 1.79. According to the model, the slope can be interpreted as:
a)
After 0 hours of driving, they went 61.93 miles.
b)
They drove 61.93 miles total.
c)
They drove at a speed of 61.93 miles per hour.
d)
They drove 61.93 hours total.
39.
Write the equation of a line that crosses the points (8, 5) and
(12, 8).
(12, 8).
a)
y = (4/3)x - 8
b)
y = (3/4)x - 1
40.
a)
A
b)
B
c)
C
d)
D
41.
Which equation represents the line that passes through the points (1, 5) and (3, 1)?
a)
y = -2x + 7
b)
y = -2x + 11
c)
y = 2x - 9
d)
y = 2x + 3
42.
True or False: "The equation of the line that passes through the points (1, 6) and (3, -4) is y = -5x + 9."
a)
True
b)
False
43.
A correlation coefficient value of
r = .92 indicates:
r = .92 indicates:
a)
a strong positive correlation
b)
a weak positive correlation
c)
a strong negative correlation
d)
no correlation
44.
True or False: "In order to calculate the mean, setting the numbers in order from least to greatest is necessary."
a)
True
b)
False
45.
True or False: "In order to calculate the median, setting the numbers in order from least to greatest is necessary."
a)
True
b)
False
46.
a)
A
b)
B
c)
C
d)
D
47.
a)
A
b)
B
c)
C
d)
D
48.
What is the median of the following data set?
a)
41
b)
38
c)
38.5
d)
36.5
49.
a)
A
b)
B
c)
C
d)
D
50.
What is the definition of the mathematical word: mean?
a)
A
b)
B
c)
C
d)
D
51.
a)
A
b)
B
c)
C
d)
D
52.
a)
A
b)
B
c)
C
d)
D
53.
a)
A
b)
B
c)
C
d)
D
54.
a)
A
b)
B
c)
C
d)
D
55.
a)
A
b)
B
c)
C
d)
D
56.
What is the Interquartile Range (IQR) of the following data?
a)
43
b)
8
c)
21
d)
13
57.
What is the Q3 of the data set?
a)
43
b)
8
c)
21
d)
13
58.
What is the Q1 of the data set?
a)
43
b)
8
c)
21
d)
13
59.
Recall how to find outliers, after one determines the data set's IQR, what number does one multiply the IQR by?
a)
1.5
b)
2.0
c)
1
d)
2.5
60.
A
a)
A
b)
B
c)
C
d)
D
61.
Describe the correlation to "The number of siblings you have and your weight."
a)
Positive correlation
b)
Negative correlation
c)
No correlation
d)
All of the above
62.
As the age of the car increases, its value decreases. Which scatterplot represents this relationship?
a)
A
b)
B
c)
C
d)
D
63.
Select the statement that best describes the line.
a)
The line is the line of best fit.
b)
The line is NOT a line of best fit because it does not go through the origin.
c)
The line is NOT a line of best fit because it does not go through the middle of the data set.
64.
What percentage of the students have brown hair?
a)
25%
b)
60%
c)
45%
d)
50%
65.
What is the relative frequency of a person who wears pants out of the total of those who wear sandals?
a)
4%
b)
14%
c)
20%
d)
36%
66.
How many chemical engineers chose Science as their favorite subject?
a)
80
b)
91
c)
171
d)
262
67.
Convert 0.81 to a percent
a)
0.81%
b)
0.18%
c)
8.1%
d)
81%
68.
What does an r-value of -0.89 indicate?
a)
Strong Positive
b)
Weak Positive
c)
Strong Negative
d)
Weak Negative
69.
Estimate the correlation coefficient for this scatterplot.
a)
r = 1.2
b)
r = 0.89
c)
r = 0
d)
r = -0.89
70.
The correlation coefficient value of r is between
a)
0 and 1
b)
0 and 100
c)
-1 and 1
d)
-2 and 2
71.
True or False: "Correlation implies causation."
a)
True
b)
False
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