Back to Details Practice: Informally fit a straight line (line of best fit) to a scatter plot suggesting a linear association. (NC.8.SP.2) Open in Editor

Practice: Informally fit a straight line (line of best fit) to a scatter plot suggesting a linear association. (NC.8.SP.2)

Targeted remediation practice

            📚 Mathematics
                            🎓 Grade 8
                                        ⏱️ 25 minutes
                    

Learning Objectives

Informally fit a straight line (line of best fit) to a scatter plot suggesting a linear association.

            Progress
            4 sections
        

1
Practice set 1

Question 1

A line of best fit should

pass as close as possible to all the points
go through the origin always
pass through exactly two points only
connect the first and last points

Question 2

The line of best fit is used to

model the trend and make predictions
list all outliers
count the data points
find the mode

Question 3

If data shows a strong negative trend, a good line of best fit has

a slope of zero
no slope
a negative slope
a positive slope

Question 4

A good line of best fit for a linear scatter plot will have

all points above it
no points near it
all points below it
about half the points above and half below it

Question 5

A line of best fit should

pass as close as possible to all the points
pass through exactly two points only
connect the first and last points
go through the origin always

2
Practice set 2

Question 6

The line of best fit is used to

model the trend and make predictions
count the data points
find the mode
list all outliers

Question 7

If data shows a strong negative trend, a good line of best fit has

a negative slope
no slope
a positive slope
a slope of zero

Question 8

A good line of best fit for a linear scatter plot will have

about half the points above and half below it
no points near it
all points below it
all points above it

Question 9

A line of best fit should

go through the origin always
connect the first and last points
pass as close as possible to all the points
pass through exactly two points only

Question 10

The line of best fit is used to

find the mode
model the trend and make predictions
count the data points
list all outliers

3
Practice set 3

Question 11

If data shows a strong negative trend, a good line of best fit has

no slope
a negative slope
a positive slope
a slope of zero

Question 12

A good line of best fit for a linear scatter plot will have

no points near it
all points above it
about half the points above and half below it
all points below it

Question 13

A line of best fit should

pass through exactly two points only
pass as close as possible to all the points
go through the origin always
connect the first and last points

Question 14

The line of best fit is used to

count the data points
list all outliers
find the mode
model the trend and make predictions

Question 15

If data shows a strong negative trend, a good line of best fit has

a slope of zero
no slope
a positive slope
a negative slope

4
Practice set 4

Question 16

A good line of best fit for a linear scatter plot will have

no points near it
all points below it
all points above it
about half the points above and half below it

Question 17

A line of best fit should

go through the origin always
pass through exactly two points only
connect the first and last points
pass as close as possible to all the points

Question 18

The line of best fit is used to

list all outliers
count the data points
find the mode
model the trend and make predictions

Question 19

If data shows a strong negative trend, a good line of best fit has

a positive slope
a negative slope
no slope
a slope of zero

Question 20

A good line of best fit for a linear scatter plot will have

about half the points above and half below it
all points above it
no points near it
all points below it

Your Score