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Regression Lines and Correlation

Authored by Anthony Clark

Mathematics

12th Grade

CCSS covered

Regression Lines and Correlation
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10 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Media Image

The correlation coefficient of the regression line is 0.986. What does that mean?

There is a very strong, positive correlation between the variables.

There is a very strong, negative correlation between the variables.

There is a weak, negative correlation between the variables.

As fork length increases, so does total length.

2.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Media Image

What does a y-intercept of 4.1 mean?

A shark with fork length of 0cm, will have a total length of 4.1cm.

For each cm the shark get's longer, it's forklength increases by 1.1cm.

For each 1cm increase in forklength, a shark gets 1cm longer.

A shark if longer that it's fork length.

Tags

CCSS.HSF.LE.B.5

3.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Media Image

What is missing from this graph?

suitable title

units of x and y axis

regression line

all of these

Tags

CCSS.8.EE.B.5

4.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Media Image

What is the gradient of the regression line?

1.1

2527

total length (cm) = 1.1forklength (cm) + 4.1

4.1

Tags

CCSS.HSF.LE.B.5

5.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Media Image

Using the regression equation: length (cm) = 1.1 forklength (cm) + 4.1 Predict the length of a shark with a fork length of 4cm.

4.1cm

4.4cm

8.5cm

5.2cm

Tags

CCSS.HSF.LE.B.5

6.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Media Image

Using the regression equation: length (cm) = 1.1 forklength (cm) + 4.1

Predict the length of a shark with a fork length of 40cm.

41cm

48.1cm

56.1cm

44.1cm

Tags

CCSS.HSF.LE.B.5

7.

MULTIPLE CHOICE QUESTION

1 min • 5 pts

Media Image

What does a gradient of 1.1 mean?

Sharks grow in 1.1cm bursts

For each cm the shark get's longer, it's forklength increases by 1.1cm.

For each 1cm increase in forklength, a shark gets 1.1cm longer.

A shark if longer that it's fork length.

Tags

CCSS.HSF.LE.B.5

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