Some data were collected on the weight of a male white laboratory rat for the first 25 weeks after its birth. The linear regression equation is (predicted weight)=100 + 40(time). Which is the best description of the slope for this regression equation in context of the problem?

The slope is 40 grams/week which means the mouse is predicted to gain about 40 grams per week after birth.

The slope of the line of regression is the time since birth of the rate. It demonstrates the predicted weight of a laboratory rate after so many months since birth.

The slope is 40 and it means every 40 weeks, the mouse is predicted to gain a gram.

The slope is 40, which tells us the line increases.

Interpret the slope of the Least Squares Line Equation.

As hours increases by one, income will increase by 31.45, on average

Income increases by 31.45 with each additional hour worked.

As hours increases by one, income will increase by 31.45

Interpret the y - intercept for the linear regression equation (predicted weight) = 100 + 40(age) for the weight of rats in grams and age is in weeks.

The y-intercept is 100 which means the rat is predicted to weigh about 100 grams at birth.

The y-intercept is about 100, which means the rats gain about 100 grams a week.

The y-intercept is 40 which means rats are predicted to weigh 40 grams at birth.

The y-intercept is 40 which indicates that the rats grow about 40 grams per week.

Leslie cleans the barns for the horses. Her time spent cleaning can be modeled by the equation y = 15 x + 30, where x represents the number of stalls that contains horses. What is the meaning of the y-intercept?

the time it takes to clean an empty barn

The time it takes to clean one horse

the time it takes to clean one stall

the times it takes to clean each of the stalls with a horse

The equation y-hat = 7 - 2x models the amount of gas remaining in a lawnmower after x hours of use since it was filled. What is the meaning of the slope?

For each hour of mowing, the mower is predicted to use 2 gallons.

the predicted amount of gas the lawnmower can hold is 2 gallons

For every two hours of mowing, the mower is predicted to use 7 gallons.

The predicted amount of gas remaining after 1 hour is 2 gallons.

Correlation and Regression

Quiz

•

Mathematics

•

10th Grade - University

•

Practice Problem

•

Hard

•

CCSS

HSF-LE.A.1B, HSS.ID.B.6, HSF.LE.B.5

Standards-aligned

JENNA CARLSON

Used 5+ times

FREE Resource

Student preview

22 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Describe the correlation in the graph shown.

Strong Negative

Strong Positive

Weak Negative

Weak Positive

Tags

CCSS.HSF-LE.A.1B

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Describe the correlation in the graph shown.

Strong Negative

Strong Positive

Weak Negative

No Correlation

Tags

CCSS.HSF-LE.A.1B

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Describe the correlation in the graph shown.

Strong Negative

Strong Positive

Weak Negative

Weak Positive

Tags

CCSS.HSF-LE.A.1B

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A correlation shows that two things are

causing each other

unrelated

best friends

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.9

MULTIPLE CHOICE QUESTION

1 min • 1 pt

You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values?

As x increases, y decreases

As x increases, y increases

As x decreases, y decreases

Tags

CCSS.HSF-LE.A.1B

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 6 absences should get approximately what score on the final exam?

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of correlation describes the following sentence:
The temperature outside and the number of hot chocolate sold at a football game.

postive

negative

no correlation

Tags

CCSS.HSS.ID.B.5

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Correlation and Regression

22 questions

Describe the correlation in the graph shown.

Describe the correlation in the graph shown.

Describe the correlation in the graph shown.

A correlation shows that two things are

You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values?

Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 6 absences should get approximately what score on the final exam?

What type of correlation describes the following sentence:
The temperature outside and the number of hot chocolate sold at a football game.

What would the correlation be between math grades and the time it takes to run a mile ?

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

What type of correlation (association)?
The outside temperature and the amount of layers you wear.

Create a free account and access millions of resources

Popular Resources on Wayground

Discover more resources for Mathematics

Correlation and Regression

22 questions

Describe the correlation in the graph shown.

Describe the correlation in the graph shown.

Describe the correlation in the graph shown.

A correlation shows that two things are

You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values?

Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 6 absences should get approximately what score on the final exam?

What type of correlation describes the following sentence:The temperature outside and the number of hot chocolate sold at a football game.

What would the correlation be between math grades and the time it takes to run a mile ?

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

What type of correlation (association)?The outside temperature and the amount of layers you wear.

Create a free account and access millions of resources

Popular Resources on Wayground

Discover more resources for Mathematics

What type of correlation describes the following sentence:
The temperature outside and the number of hot chocolate sold at a football game.

What type of correlation (association)?
The outside temperature and the amount of layers you wear.