# 8th Grade Statistics Common Core Aligned

```KIPP - KIPP Gr.8 EOM 6 Assessment
Assessment ID:
dna.67863
ib.1651062
1
Mr. Lu assigned portions of planning a field trip to
different groups in his math class. Mary's group
had to determine the cost of the bus. The charter
bus company quoted a flat fee for the driver of
\$150 and a per mile charge of \$0.53.
3
Which equation will give the cost, C, for a trip of
m miles?
A.
B.
C.
D.
2
Mrs. Vincent had some water in a glass. She
measured with a ruler next to the glass and
recorded the level of the water from the table in
centimeters (cm). Next she added an ice cube
and measured again. She repeated this adding
and measuring and recorded her data in the
following graph.
C = 150 + 0.53m
150 – 0.53m = C
150 + C = 0.53m
C – 150 = m &divide; 0.53
The 8th grade dance will be held at a banquet
hall. The banquet hall company charges a flat fee
for hall rental, and a per-person charge for meals.
They provided the planning committee with this
expense table for hall rental and meals.
What does the point (0, 5.5) mean on the graph?
What is the cost per person for meals if the cost
to rent the hall is \$175.00?
A.
B.
C.
D.
\$17
\$58
\$85
A. Number of ice cubes added to the glass
B. Height of water once all ice cubes were added
C. Height of water in the glass before ice cubes
D. Height of water in the glass after 5.5 ice cubes
\$175
4
The Science Club is making and selling slime.
They spent \$75 on supplies and decided to sell
slime for \$1.25 per container. Which equation,
written in words, relates the predicted profit
based on the number of containers of slime sold?
A. Profit equals 75 spent on supplies times 1.25
times the number of containers sold.
B. 1.25 times the number of containers sold minus
75 spent on supplies equals the profit.
C. Profit equals 1.25 times the number of
containers sold plus 75 spent on supplies.
D. 75 spent on supplies minus 1.25 times the
number of containers sold equals profit.
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KIPP - KIPP Gr.8 EOM 6 Assessment
Assessment ID:
dna.67863
ib.1651062
5
Data regarding the weight of vehicles in tons and
the fuel efficiency in miles per gallon of those
vehicles are shown in the scatterplot.
6
The data shown in the graphs indicate a linear
association. Which line best fits the data?
A.
B.
Which answer choice describes the pattern in the
data?
A.
B.
C.
D.
Negative association
Positive association
Nonlinear
Outlier
C.
D.
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KIPP - KIPP Gr.8 EOM 6 Assessment
Assessment ID:
dna.67863
ib.1651062
7
Each graph displays data with a linear
relationship. Which line best fits the data shown?
8
A.
The scatterplot shows data related to the number
of oil changes a car owner gets per year and how
much money (in dollars) the owner spends on
repairs during that year. The equation of the line
of best fit is y = − 99x + 725.
B.
Which sentence accurately describes the slope?
A. The amount spent on repairs per year
decreases by \$99 for each oil change the owner
gets.
B. For each oil change the owner gets the amount
needed for repairs increases by \$99.
C. Each time the owner gets an oil change it costs
\$725.
C.
D. The amount spent on repairs each time the
owner gets an oil change is \$725.
9
Purchasing the correctly-sized BMX bike is based
on the height of the rider. In order to fit a
customer, the salesman can use the equation b
= .29h + 1.35 where b is the size of the BMX bike
frame in inches and h is the height of the rider in
inches.
Which sentence explains the slope in the
equation?
D.
A. As a rider increases one inch in height, the bike
frame increases .29 inches.
B. The height of the rider gets multiplied by .29.
C. The bike frame increases .29 inches for every
1.35 inches of the rider’s height.
D. As a rider’s height increases 1.35 inches, the
bike frame increases one inch.
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KIPP - KIPP Gr.8 EOM 6 Assessment
Assessment ID:
dna.67863
ib.1651062
10
When an eighth grader raises an animal for an
agriculture project, the animal is weighed at birth
and weighed each week after. The data is shown
in the graph. The equation for the line of best fit
of the growth of the animal is w = 3.86k + 15
where w is the weight of the animal and k is the
number of weeks.
12
brand of phone they would like to purchase. The
relative frequencies are shown in the table.
Suppose you randomly pick 1 of the 200
surveyed students, which prediction is true?
A. If the student is female, she is least likely to want
to purchase a Samsung phone.
B. The student will likely want to purchase an Apple
phone.
C. The student will likely want to purchase a
Which statement describes the y-intercept?
A.
B.
C.
D.
11
The animal weighs 3.86 pounds at birth.
Samsung phone.
D. If the student is male, he will most likely want to
purchase a Motorola phone.
The animal weighs 15 pounds at birth.
The animal is gaining 3.86 pounds each week.
The animal is gaining 15 pounds each week.
arrangement and the number of cats and dogs
they owned. The results are in the table.
Which sentence explains the meaning of the
approximate relative frequency 0.24?
A. Approximately 24% of the animals are dogs in
townhouses.
B. Approximately 24% of the animals are cats in
single family homes.
C. Approximately 24% of the animals are dogs in
single family homes.
D. Approximately 24% of the animals are cats on
farms.
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KIPP - KIPP Gr.8 EOM 6 Assessment
Assessment ID:
dna.67863
ib.1651062
13
randomly sampled and asked to choose their
favorite superhero from among three given, and
were asked whether or not they take Computer
Technology class at school. The results of the
survey are summarized below.
●
●
●
●
●
58 students are taking Computer
Technology
20 students like The Hulk
16 students are not taking Computer
Technology and like Iron Man
12 students are taking Computer
Technology and like The Hulk
54 students like Iron Man
Which table correctly represents the results of the
survey?
A.
B.
C.
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