Review - Linear & Exponential Regression

A chemist has a 100-gram sample of a radioactive material.  He records the amount of radioactive material every week for 6 weeks and obtains the following data: Use exponential regression to find an equation then use the equation to find how much is left after 12 weeks?

• 15
• 21
• 17
• 19

Tags

CCSS.HSF.LE.A.2

Describe the association of the scatter plot

• Linear
• Linear; negative association
• Exponential; Growth
• Exponential; Decay

Tags

CCSS.HSF-LE.A.1B

Use the exponential regression to find an equation that fits the​ data, where x is the years since 1990.

• y=8.92•1.23^x
• y=1.23•8.92^x
• y=8.92+1.23x
• y=8.92x+1.23

Tags

CCSS.HSF.LE.A.2

A person travels by car.  They record their miles driven in a data table.  Calculate the linear regression equation of this data.

• y = 61.93x - 1.79
• y = -1.79x + 61.93
• y = 0.016x + 0.03
• y = 0.03x + 0.016

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

What type of correlation does this graph have?

• positive

• negative

• none

• all of the above

Tags

CCSS.HSF-LE.A.1B

Which sentence describes the relationship shown on this scatter plot?

• As the temperature decreases, the visitors increase.

• As the temperature increases, the number of visitors increases.

• As the visitors increase, the temperature decreases.

• No correlation

Tags

CCSS.L.1.6

CCSS.L.3.6

CCSS.RI.K.7

What is the correlation?

• Negative correlation
• No correlation
• Positive correlation
• All of the above

Tags

CCSS.HSF-LE.A.1B

Which of the following lines represents the line of best fit for the scatter plot?

• A
• B
• C
• D

Tags

CCSS.8.EE.B.5

What is a line of best fit 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

Tags

CCSS.8.EE.B.5