Review of Linear Regression

The linear regression equation is ŷ = -1.79 + 61.93x.  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

Which scatter plot shows no relationship?

• Graph A
• Graph B
• Graph C
• Graph D

What is a best-fit line used for?

• To make predictions
• To make the graph look pretty
• To connect the points
• To make it look like you know what you are doing

What is the correlation between length of running start and distance of jump?

• positive:  the further you run the further you jump
• negative: the less you run the less distance of your jump
• positive: the further your running start the less your distance

Make a prediction for a resting heart rate after 6 hours of exercise a week.

• 6
• 50
• 55
• 59

Estimate the value of r:

• 0.99
• 0.05
• -0.99
• 1.25

A restaurant sells pizza for the prices in the data table.  Calculate the linear regression equation of the data.

• ŷ = 12 + 1.5x

• ŷ = 15 + 12x

• ŷ = 0.67x - 8

• ŷ = -8x + 0.67

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7

CCSS.HSA.CED.A.2

CCSS.HSF.BF.A.1

CCSS.HSF.LE.A.2

If Joe worked 30 hours, how much is he expected to earn?

• $600
• $200
• $1000
• $800

Tags

CCSS.HSS.ID.C.7

CCSS.HSA.CED.A.1

CCSS.HSA.REI.B.3

CCSS.HSA.SSE.A.1

• strong positive

• strong negative

• weak positive

• weak negative

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

Estimate the correlation coefficient for this scatterplot.

• r = -0.9

• r = 1

• r = 0.9

• r = -1

Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8