Predictions Using Line of Best Fit

Predict the grade of a student that has 7 absences.

• 50

• 45

• 70

• 60

Write the equation of the trend line.

• y = 1x

• y = 1x + 100

• y = 20x

• y = 20x + 100

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

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

Which scatter plot shows a linear relationship between x and y?

• Graph A

• Graph B

• Graph C

• Graph D

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

• A

• B

• C

• D

A line drawn in a scatter plot to fit most of the dots and

shows the relationship between the two sets of data

• Association

• Causation

• Line of Best Fit

• Linear Regression

When the data closely resembles a line

• Strong Correlation

• Weak Correlation

• No Correlation

• Correlation

A method used to find the line of best fit.

• Association

• Causation

• Line of Best Fit

• Linear Regression

A difference between an actual y-value and a predicted

y-value

• Interpolation

• Extrapolation

• Correlations Coefficient

• Residual