3.5 to 3.8

Shown is a residual plot. Would a linear regression model of the data be most appropriate?

• YES
• NO

After performing analyses on a set of data, Mrs. Schoeneck examined the scatter plot of the residual values for each analysis. Which scatter plot indicated the best linear fit for the data?

• A
• B
• C

• This residual plot represents a linear fit.
• This residual plot represents a nonlinear fit.
• This residual plot represents no fit.

A scatter plot and residual plot are the same thing.

• True
• False

How do you calculate a residual?

• Actual - Predicted

• Predicted - Actual

I predicted someone would score a 78% on their test, but they actually scored an 81%. What's the residual?

• 81 - 78 = 3

• 78 - 81 = -3

• What's residual?

• 8

• 14

• 32

• 64

The scatter plot below shows the relationship between the number of bags of popcorn that are sold and the price per bag.

Which of these graphs shows the line of best fit?

• 
• 
• 
• 

What type of association does this graph have?

• positive 
• negative
• none
• all of the above

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 chapters would be in a book with 180 pages. 

• 12 chapters
• 15 chapters
• 18 chapters
• 21 chapters