Linear Models and Tables Review

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the line of best fit to predict how many chapters would be in a book with 140 pages.

• 12 chapters

• 19 chapters

• 14 chapters

• 21 chapters

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the line of best fit to predict how many pages would be in a book with 6 chapters.

• 100 pages

• 170 pages

• 60 pages

• 20 pages

Find the slope for the line of best fit using points (2,2) and (4,3)

• 2

• 1/2

• -2

• -1/2

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

What is the equation of the line of best fit?

• y = -25x + 170

• y = -5/8x + 170

• y = 25x + 170

• y = 5/8x + 170

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

• A

• B

• C

• D

How many laps can a bicycle make around the park in 23 minutes?

• 44 laps

• 12 1/2 laps

• 23 laps

What type of correlation does this scatter plot show?

• positive linear association

• negative linear association

• no association

• nonlinear association

What percentage of the days that it rained, did they forecast no rain?

• About 20%

• About 18%

• About 14%

• About 12%

Of the times when the forecast called for rain, what is the percentage that it actually rained?

• About 90%

• About 50%

• About 70%

• About 80%