Using Linear Regression Equations

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many pages would be in a book with 19 chapters. 

• 150 pages
• 170 pages
• 190 pages
• 210 pages

Tags

CCSS.HSA.CED.A.2

CCSS.HSF.IF.B.4

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

About how many male math teachers were there in 2006?

• 15
• 30
• 35
• 45

Tags

CCSS.HSS.ID.B.6

The linear regression equation is y = 61.93x - 1.79. Use the equation to predict how far this person will travel after 10 hours of driving.

• 10 miles

• 617.5 miles

• 0.19 miles

• 500 miles

How many pushups someone can do can be correlated to the distance they run. The regression equation for this is y=0.72 + 7.62x, where x is the number of miles run and y is the number of pushups.

Predict how many push-ups someone should be able to do if that person runs 3.75 miles. Would this be considered interpolation or extrapolation?

• 29.29 push-ups, interpolation

• 29.29 push-ups, extrapolation

• .40 push-ups, interpolation

• .40 push-ups, extrapolation

Use your graphing calculator to write a regression equation for the above table. Then predict the attendance for game 9.

• 5,000

• 2,620

• 17,000

• 20,200

The table shows the height of a tree for various years after it was planted. Use your graphing calculator to write a regression equation for the above table. Using the equation, how tall would the tree be 30 years after it was planted?

• 22 feet

• 23 feet

• 36 feet

• 37 feet

The table shown is comparing a person's foot length to their height in cm. Use your graphing calculator to write a regression equation for the above table. What might the height of a person be with a foot length of 30 cm?

• 185 cm

• 180 cm

• 190 cm

• 192 cm