Linear/Quadratic Regression Practice

The table shows data about age and servings of vegetables per month.

Find the line / curve of best fit. Round to the nearest tenth.​ ​ ​ (a)  

Use your line / curve of best fit to answer the following question.

About how many servings of vegetables can you expect a 4 year old to have per month?

• about 23

• about 33

• about 12

• about 16

• about 29

Tags

CCSS.8.EE.C.7B

Which of the following quadratic equations best represents the following data?

• y = 7x² - 3x

• y = 3x² - 2x + 1

• y = 6x² + 3x - 2

• y = 7x² - 3x + 1

• y = 5x² + 9x

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.SSE.A.1

The table shows the number of deer spotted on a plot of land and the temperature outside.

What is the equation of the line / curve of best fit?​ (a)  

Use your line / curve of best fit to answer the following question.

How many deer could you expect to see when the temperature is 20 degrees?

• about 8 deer

• about 10 deer

• about 11 deer

• about 7 deer

• about 2 deer

Tags

CCSS.HSF-LE.A.1B

Use your line / curve of best fit to answer the following question.

How many deer could you expect to see when the temperature is 68 degrees?

• about 8 deer

• about 10 deer

• about 11 deer

• about 3 deer

• about 2 deer

Tags

CCSS.8.F.A.3

The table shows the number of people at the beach given the temperature outside.

What is the equation of the line / curve of best fit for this data?​ (a)  

Use your line / curve of best fit to answer the following question.

How many beach-goers could you expect at Stewart Beach when the temperature is 80 degrees?

• about 117 people

• about 111 people

• about 109 people

• about 130 people

• about 121 people

Use your line / curve of best fit to answer the following question.

How many beach-goers could you expect at Stewart Beach when the temperature is 89 degrees?

• about 138 people

• about 144 people

• about 150 people

• about 132 people

• about 121 people

What type of correlation does the graph show?

• Positive Correlation

• Negative Correlation

• No Correlation

Tags

CCSS.HSS.ID.B.5