Free Printable Scatterplots & Line of Best Fit

1.

Which equation most closely represents the line of best fit for the scatter plot below?

a)

y=x

b)

$y=\frac{2}{3}x+1$

c)

$y=\frac{3}{2}x+4$

d)

$y=\frac{3}{2}x+1$

2.

Based on the line of best fit, which exam grade is the best prediction for a student who spends about 4 hours on math homework each week?

a)

62

b)

72

c)

82

d)

92

3.

What is the relationship between test scores and hours of sleep shown in this graph?

a)

undefined association

b)

positive association

c)

negative association

d)

no association

4.

Which equation matches the line of best fit shown?

a)

y=x+5

b)

y=x+25

c)

y=5x+5

d)

y=5x+25

5.

What type of association is shown in the scatterplot?

a)

no association

b)

positive association

c)

negative association

d)

perfect association

6.

According to this data and the line of best fit shown, when should a typical infant weigh 17 pounds?

a)

6 months

b)

10 months

c)

13 months

d)

16 months

7.

Which equation shows the best trend line for the scatter plot?

a)

$y=-10x+30$

b)

$y=-10x+60$

c)

$y=10x+30$

d)

$y=10x+60$

8.

Which equation best represents this scatterplot?

a)

$y=2x+3$

b)

$y=\frac{1}{2}x+3$

c)

$y=2x-3$

d)

$y=\frac{1}{2}x-3$

9.

Which equation best represents the scatterplot?

a)

$y=110$

b)

$y=110x$

c)

$y=x+55$

d)

$y=-x+55$

10.

Which of the following best represents the equation for the line of best fit for the data shown?

a)

$y=-4x+5$

b)

$y=0.4x+5$

c)

$y=-0.4x+5$

d)

$y=4x+5$

11.

Based on this scatterplot, how many uninfected blossoms would he expect to find on day 12?

a)

4

b)

6

c)

8

d)

10

12.

Which scatter plot best represents the data?

a)

b)

c)

d)

13.

Which of the following scatterplots is most likely to have a line of best fit represented by the equation $y=-5x+2$ ?

a)

b)

c)

d)

14.

Which scatterplot shows the relationship between x and y if x represents a student score on a test and y represents the number of incorrect answers a student received on the same test?

a)

b)

c)

d)

15.

Beth drew a scatterplot and then correctly drew the line of best fit for her scatterplot. The line of best fit had a slope of 2. Which of the following is most likely Beth's scatterplot?

a)

b)

c)

d)

16.

If the high temperature on a day is 95 degrees, about how much will their cost for electricity be on that day?

a)

$0.95

b)

$0.70

c)

$0.67

d)

$0.64

17.

Which conclusion about the scatterplot is valid?

a)

There is almost no relationship between eating peanuts and bowling score.

b)

Students who eat more peanuts have higher bowling scores.

c)

Students who eat more peanuts have lower bowling scores.

d)

No bowlers eat peanuts.

18.

Which scatterplot below shows the strongest positive linear correlation?

a)

b)

c)

d)

Scatterplots & Line of Best Fit

Total questions: 18

Worksheet time: 1hrs 26mins

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