A survey is given out asking students for their weight, as well as the current grade they have in math. In general, what happens to the math grade values as the weight increases?

there is no correlation between math grade and weight

The scatter plot below shows the relationship between absences and test score. The equation for the line of best fit is y = -0.9x + 34. What is the meaning of −0.9 in the equation?

For each additional absence, the test score tends to decrease by 0.9

The test score tends to be 0.9 times the absences

The equation predicts that zero absences will result in the test score to be 0.9

The absences tends to be 0.9 times the test score

The scatter plot below shows the relationship between inches of snow and snow shovels sold. The equation for the line of best fit is y = 0.8x + 1. What is the meaning of 0.8 in the equation?

For each additional inch of snow, the snow shovels sold tends to increase by 0.8

The snow shovels sold tends to be 0.8 times the inches of snow

The equation predicts that zero inches of snow will result in the snow shovels sold to be −0.8

For each additional inch of snow, the snow shovels sold tends to decrease by 0.8

The scatter plot below shows the relationship between years of experience and points scored. The equation for the line of best fit is y = 0.6x + 4 What is the meaning of 4 in the equation?

The equation predicts that zero years of experience will result in the points scored to be 4

The equation predicts that zero years of experience will result in the points scored to be −4

For each additional year of experience, the points scored tends to increase by 4

For each additional point scored, the years of experience tends to increase by 4

The equation of this line is y = -2.2x + 12.4. Interpret the meaning of the slope of the line of best fit.

for each hour of practice, the number of mistakes decreases by 2.2

for each hour of practice, you will make 12.4 mistakes

without practicing, you would expect to make 12.4 mistakes

for each hour of practice, the number of mistakes increases by 2.2

The equation of this line is y = -2.2x + 12.4. Interpret the meaning of the y-intercept of the line of best fit.

without practicing, you would expect to make 12.4 mistakes

for each hour of practice, you will make 12.4 mistakes

for each hour of practice, the number of mistakes decreases by 2.2

for each hour of practice, the number of mistakes increases by 2.2

The equation of the line shown is y = 1.4x + 55.2 Interpret the meaning of the slope of the line of best fit.

for every hour studied, test score increases by 1.4%

without studying, the expected test score would be 55.2%

for every hour studied, test score decreases by 1.4%

without studying, the test score would be expected to be 1.4%

The equation of the line shown is y = 1.4x + 55.2 Interpret the meaning of the y-intercept of the line of best fit.

without studying, the expected test score would be 55.2%

for every hour studied, test score decreases by 1.4%

for every hour studied, test score increases by 1.4%

without studying, the test score would be expected to be 1.4%

The equation of the line shown to the left is y = 0.1x + 100. Interpret the meaning of the slope.

for every mile you fly, the cost of the plane ticket increases by $0.10

for every mile you fly, the cost of the plane ticket increases by $100

the cost of a ticket if you fly 0 miles is $100

for every mile you fly, the cost of the plane ticket decreases by $0.10

Scatter Plots & Line of Best Fit

Authored by Chris Rippe

Mathematics

8th Grade

CCSS covered

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74 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The scatter plot shows data points and the line of best fit. Identify the association of the scatter plot.

Strong Positive association

Strong Negative association

Moderate or weak positive association

Moderate or weak negative association

Tags

CCSS.HSS.ID.B.5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Describe the association, if any, as linear or nonlinear.

Linear

Non-linear

No Association

Tags

CCSS.8.F.A.3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Describe the association, if any, as linear or nonlinear.

Linear

Non-linear

No Association

Tags

CCSS.8.F.A.3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Describe the association between the two variable, if any, as positive or negative.

Positive association

Negative association

No association

Tags

CCSS.HSS.ID.B.5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Describe the association between the two variable, if any, as positive or negative.

Positive association

Negative association

No association

Tags

CCSS.HSS.ID.B.5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Describe the association between the two variable, if any, as positive or negative.

Positive association

Negative association

No association

Tags

CCSS.HSS.ID.B.5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following scatter plots depicts a negative relationship between the dependent and independent variables?

Tags

CCSS.HSS.ID.B.5

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Scatter Plots & Line of Best Fit

The scatter plot shows data points and the line of best fit. Identify the association of the scatter plot.

Describe the association, if any, as linear or nonlinear.

Describe the association, if any, as linear or nonlinear.

Describe the association between the two variable, if any, as positive or negative.

Describe the association between the two variable, if any, as positive or negative.

Describe the association between the two variable, if any, as positive or negative.

Which of the following scatter plots depicts a negative relationship between the dependent and independent variables?

Which of the following scatter plots depicts a positive relationship between the dependent and independent variables?

The scatter plot shows data points and the line of best fit. Identify the association of the scatter plot.

The scatter plot shows data points and the line of best fit. Identify the association of the scatter plot.

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