Name; _____________________________
Unit 14 Review Scatter plots and Data
1. The scatter plot shows the latitude and average
annual temperatures of cities on the East Coast.
Jared examined the scatter plot and concluded
that there was no correlation between latitude
and average annual temperature.
Which statement best describes why Jared's conclusion
was incorrect?
a. The northernmost city has the lowest
average annual temperature.
b. The southernmost city has the highest
average annual temperature.
c. The data shows a positive relationship
between latitude and average annual
temperature.
d. The data show a negative relationship
between latitude and average annual
temperature.
2. Which relationship is suggested by the scatter
plot below?
a. The fewer calories you eat, the less you
weigh.
b. The fewer calories you eat, the more you
weigh.
c. The more calories you eat, the less you
weigh.
d. The number of calories you eat does not
affect your weight.
Date: ___________________ Period: ______
3. The scatter plot shows the box office earnings
and critical success of all the movies showing in
local theaters. Nora examined the scatter plot
and concluded that there was a negative
correlation between box office earnings and
critical success of movies.
Which statement best describes why Nora's conclusion
was incorrect?
a. The data show no relationship between box
office earnings and critical success.
b. The data show a positive relationship
between box office earnings and critical
success.
c. The movie that received the best reviews
from critics earned the least at the box
office.
d. The movie that earned the least at the box
office received the worst reviews from
critics.
4. Which relationship is suggested by the scatter
plot below?
a. Widgets cost more when there is a large
supply.
b. Widgets cost less when there is a low
supply.
c. The supply of widgets does not affect
their price.
d. Widgets cost more when there is a low
supply.
5. Which relationship is suggested by the scatter
plot below?
a. The amount of time a student studies
does not affect his or her GPA.
b. The more a student studies, the higher
the student's GPA.
c. The less a student studies, the higher the
student's GPA.
d. The more a student studies, the lower
the student's GPA.
6. Which relationship is suggested by the scatter
plot below?
7. Two different samples of data are modeled by
the same line of best fit. The data and models
are shown below in separate scatter plots.
Which sample is better represented by the linear
model?
a. Sample #1, because the data are more
tightly clustered together
b. Sample #2, because the line of best fit
passes through more points in the sample
data
c. Sample #1, because the line of best fit
closely resembles the shape of the sample
data
d. Sample #2, because no other relation
between the variables is more apparent
than the linear model
8. Jennifer recorded the number of chirps that
crickets made every 15 seconds over a period of
several weeks to see the relationship between
the chirps and the outside temperature. She
recorded her results on the scatter plot below.
a. The heavier the vehicle, the lower the gas
mileage.
b. The lighter the vehicle, the lower the gas
mileage.
c. The heavier the vehicle, the higher the
gas mileage.
d. The weight of the vehicle does not affect
the vehicle's gas mileage.
Based on the data in this scatterplot, what would be
a good prediction of the temperature outside if a
cricket chirps 70 times in 15 seconds?
a. between 90 and 100 degrees
b. between 105 and 115 degrees
c. between 120 and 130 degrees
d. between 60 and 70 degrees
9. The scatter plot below shows movie theaters
with different numbers of screens and their
average weekly attendance.
12. Daisy kept track of the number of minutes she
practiced this week for this weekend's dance
recital. What is the mean absolute deviation of
the number of minutes she practiced?
Sunday Monday Tuesday Wednesday Thursday Friday
75
Based on the trend in the scatterplot,
approximately how many people will be in
attendance at a movie theater with 8 screens?
a. 90
b. 105
c. 85
d. 140
10. Below is a set of data. Determine the mean and
the mean absolute deviation (MAD).
{3, 5, 7, 9, 11}
a. Mean: 6
MAD: 2.6
b. Mean: 7
MAD: 3
c. Mean: 7
MAD: 2.4
d. Mean: 7
MAD: 0
11. The basketball coach of Beeville Junior High
made a line graph to show the number of points
that each player made in last night's basketball
game. Use this data to find the mean absolute
deviation of the points.
a.
b.
c.
d.
51
35.2
5.1
3.52
40
90
50
30
90
13. The top ten highest-valued contracts in baseball
history are shown below, in millions of dollars.
275, 252, 248, 240, 240, 225, 215, 214, 189, 184
What is the mean absolute deviation of this
group of contracts?
a.
b.
c.
d.
$22,688,900
$22,800,000
$226,889,000
$228,200,000
14. In which of the following data sets are the
points closest to the mean?
a.
b.
c.
d.
44, 46, 46, 46, 44
2, 1, 2, 2, 1
0.7, 1.2, 0.1, 1.6, 2.0
12, 12, 10, 12, 12