Choosing a Line of Best Fit

Choosing a Line of Best Fit

8th Grade

12 Qs

quiz-placeholder

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Choosing a Line of Best Fit

Choosing a Line of Best Fit

Assessment

Quiz

Mathematics

8th Grade

Hard

Created by

Anthony Clark

FREE Resource

12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Select the statement that best describes the line.

The line is the line of best fit.

The line is NOT a line of best fit because it does not pass through two points.

The line is NOT a line of best fit because it does not go through the middle of the data set.

The line is NOT a line of best fit because it does not go through the origin.

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The red line represents the line of best fit for the scatter plot. How many ice cream sales are expected if the temperature is 90°?

55

0

103

100

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What does the value, r= -0.89, tell us about the linear relationship of two quantitative variables?

Strong positive

Weak positive

Strong negative

Weak negative

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Determine the predicted income if 22 hours were worked on an assembly job.

$207.30

$449.60

$691.90

$543.30

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Which graph has a correlation coefficient (r) of about -.6 ?

a

b

c

d

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Which line is the best line of best fit?

a

b

c

i don't see any lines

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The table shown is comparing a person's foot length to their height in cm. Calculate a line of best fit.

f(x) = 25.05x + 5.57

f(x) = 5.57x + 25.05

f(x) = -5.57x + 25.05

f(x) = 5.57x - 25.05

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