Answers2025-2026_MDCPS_1205070-MJ Grade 8 Pre-Algebra Sem 1-CRUnit Test

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How many points should be plotted when creating a scatterplot from the table of values below?Pages in Book vs. Time Needed to ReadNumber of pages in bookTime needed to read book (hours)200181751527521225184003035026

A
5
B
6
C
11
D
12
4

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5

Based on the scatterplot below, what is the most likely value for “Pounds of Apples” when “Number of Apples” is 80?

Question illustration
A
42
B
81
C
158
D
398
6

Which scatterplot correctly represents the table of values below?Number of years collecting stampsNumber of stamps in collection210051754150312541753100

A
A graph titled Years Collecting Stamps versus Stamps in Collection has years collecting stamps on the x-axis and stamps in collection on the y-axis. Points are at (2, 100), (3, 100), (3, 125), (4, 150), (4, 175), (5, 200).
Option A
B
A graph titled Years Collecting Stamps versus Stamps in Collection has years collecting stamps on the x-axis and stamps in collection on the y-axis. Points are at (2, 100), (3, 100), (3, 150), (4, 150), (4, 175), and (5, 175).
Option B
C
A graph titled Years Collecting Stamps versus Stamps in Collection has years collecting stamps on the x-axis and stamps in collection on the y-axis. Points are at (2, 100), (3, 100), (3, 125), (4, 150), (4, 175), (5, 175).
Option C
D
A graph titled Years Collecting Stamps versus Stamps in Collection has years collecting stamps on the x-axis and stamps in collection on the y-axis. Points are at (2, 75), (3, 100), (3, 125), (4, 150), (4, 175), and (5, 175).
Option D
7

Which scatterplot is labeled correctly if it is meant to show the relationship between the number of minutes that gym members spend running on a treadmill and the number of calories that they burn?

A
A graph titled Members versus Calories Burned has Members on the x-axis and calories burned on the y-axis. Points plotted are (10, 200), (20, 300), (30, 400), (35, 425), (40, 650), (50, 700).
Option A
B
A graph titled Minutes versus Calories Burned has Minutes on the x-axis and calories burned on the y-axis. Points plotted are (10, 200), (20, 300), (30, 400), (35, 425), (40, 650), (50, 700).
Option B
C
A graph titled Calories Burned versus Minutes has Calories burned on the x-axis and minutes on the y-axis. Points plotted are (160, 11), (200, 15), (300, 20), (376, 25), (390, 30), (400, 35).
Option C
D
A graph titled Calories Burned versus Members has Calories burned on the x-axis and members on the y-axis. Points plotted are (160, 11), (200, 15), (300, 20), (376, 25), (390, 30), (400, 35).
Option D
8

The table of values shows the number of touchdown passes that a quarterback threw in each of his first five football games of the season.Game vs. Touchdown PassesGameTouchdown passes1321334253Which would be a point on the scatterplot that represents touchdown passes based on these games played?

A
(1, 2)
B
(2, 4)
C
(3, 1)
D
(5, 3)
9

How many variables are displayed in a scatterplot?

A
one along the x-axis, and one along the y-axis
B
one along the x-axis, and two along the y-axis
C
two along the x-axis, and one along the y-axis
D
two along the x-axis, and two along the y-axis
10

Willis has noticed that when time has been one of the variables analyzed by a scatterplot he has looked at, it has always been the independent variable. He has hypothesized that time can never be a dependent variable. Does the scatterplot below confirm or invalidate Willis’s hypothesis?

Question illustration
A
It confirms his hypothesis because the scatterplot must have been created incorrectly.
B
It confirms his hypothesis because time is the independent variable and distance traveled is the dependent variable.
C
It invalidates his hypothesis because it is possible for the time a trip takes to depend on the distance that is traveled during the trip.
D
It invalidates his hypothesis because it is possible for the distance that is traveled during a trip to depend on the time that is spent traveling.
11

Which describes a correct way to construct a scatterplot?

A
When analyzing the number of junk e-mails received each day of the week, the number of junk e-mails is the independent variable.
B
When analyzing the number of cups of hot tea that are sold during days with varying average temperatures, temperature is the dependent variable.
C
When analyzing shoe size according to height, shoe size is the independent variable.
D
When analyzing the number of boys who participate in volleyball each year for several years, the number of boys who participate in volleyball is the dependent variable.
12

Mackenzie investigated the relationship between the number of hours studying and the test score for some of the students in her class. She constructed the scatterplot below.Which statement is correct based on the scatterplot?

Question illustration
A
There is no relationship between hours studying and test score because the points do not form a straight line.
B
There is no relationship between hours studying and test score because there are multiple test scores for 2 hours studying.
C
There is a relationship between study hours and test score. As the hours of studying increase, the test scores increase.
D
There is a relationship between study hours and test score. As the hours of studying increase, the test scores decrease.
13

An online store sold a gift basket at five different prices and recorded the number of gift baskets that were sold at each price. The results are shown in the scatterplot.Which statement is correct based on the scatterplot?

Question illustration
A
There is no relationship between price and gift baskets sold because the points do not form a straight line.
B
There is no relationship between price and gift baskets sold because there are multiple prices at which 80 gift baskets were sold.
C
There is a relationship between price and gift baskets sold, and the relationship is that as the price increases, the gift baskets sold increases.
D
There is a relationship between price and gift baskets sold, and the relationship is that as the price increases, the gift baskets sold decreases.
14

Elijah created the scatterplot to show the relationship between the temperature in degrees Fahrenheit and the number of visitors to a zoo. Which is true regarding the data in his scatterplot?

Question illustration
A
As the temperature increases, the number of visitors decreases.
B
As the temperature increases, the number of visitors increases.
C
As the temperature increases, the number of visitors remains the same.
D
As the temperature increases, the number of visitors increases then decreases.
15

What is the name of the type of data that a scatterplot is used to analyze?

A
univariate data
B
bivariate data
C
trivariate data
D
quadvariate data

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