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Scatter plots and line of best fit

Authored by Candice Gathers

Mathematics

8th Grade

CCSS covered

Used 2+ times

Scatter plots and line of best fit
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21 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

The graph above shows a line of best fit for data collected on the distance bicyclists have remaining in relation to the amount of time they have been riding.  What is the equation of the line of best fit?

y = -25x + 170
y = 25x + 170
y = -(5/8) x + 170
y = (5/8) x + 170

Tags

CCSS.HSF.LE.B.5

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

The graph above shows a line of best fit for data collected on the amount earned by waiters and waitresses last week in relation to the number of tables they served.  What is the equation of the line of best fit?

y = (5/3) x + 375
y = (1/3) x + 475
y = (5/3) x + 475
y = (1/3) x + 375

Tags

CCSS.HSF.LE.B.5

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

The graph  shows a line of best fit for the data collected on the amount of cell phone bills in relation to the number of minutes used.  What is the equation of the line of best fit.

y = (1/2) x + 3
y = (1/2) x + 15
y = (1/40) x 
y = (1/40) x + 15

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

CCSS.HSA.CED.A.2

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

Looking at the graph, what is the correlation between the x and y variables?

y increases as x increases
y is constant
y decreases as x descreases
y decreases as x increases

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

CCSS.HSS.ID.C.8

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

Which scatterplot most likely has a line of best fit represented by y = - 2x + 1

W
X
Y
Z

Tags

CCSS.8.EE.B.5

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

The graph shows a line of best fit for data collected on the amount of income earned by lawn companies in relation to the number of yards mowed.  What is the equation of the line of best fit?

y = (3/2) x
y = 30x
y = 30x + 300
y = (3/2)x + 300

Tags

CCSS.HSF.LE.B.5

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What type of correlation does this scatter plot have?

positive 
negative
none
all of the above

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

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