Scatter Plot, Correlation, And Line Of Best Fit Exam With Answer Key - High School Common Core: Interpret Linear Models
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Scatter plot, Correlation, and Line of Best Fit Exam
Name:___________________________
High School Common Core: Interpret Linear Models
Pd:____
Date:__________
1. A baseball coach graphs some data and finds the line of
2. Below is the table of data regarding the cherry blossom trees
best fit. The equation for the line of best fit is
in Washington D.C. A) Make a scatter plot of the given data.
y = 0.32x – 20.51, where x is the number of times at bat and
Average
1.5
5.8
2.4
4.0
4.7
5.4
3.2
5.0
y is the number of hits.
Temp (C)
How many hits should he expect from a player who is at bat
Date in
28
3
25
21
14
8
20
6
175 times?
April trees
bloom
A) 35 hits
B) 49 hits
C) 609 hits
D) 62 hits
3. Chang wants to know if he is improving his skill on the
cello. He created a scatter plot and drew a line of best fit.
B) Correlation:__________________
4. The graph below shows the relationship between the
distance in miles a delivery truck traveled and the number of
If he uses the point (2, 8) and (5, 1.5) from his line, which
hours each delivery took.
equation would best represent the line of best fit?
A) y = -2.17x + 12.3
B) y = 2.17x + 3.77
C) y = -0.46x + 9
D) y = -2.17x – 9.35
5. Jared collected data on the ages and heights of a random
sample of elementary school students. If he plots the data
on a scatter plot, what relationship will he most likely see
Which of the two given points would be the best to use to
between age and height?
calculate the line of best fit?
A) A negative correlation
A) (500, 11) and (700, 11)
B) No correlation
B) (300, 9) and (400, 7)
C) A positive correlation
C) (400, 9) and (500, 11)
D) A constant correlation
D) (300, 7) and (600, 10)
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