Scatter Plots and Regression Word Problems

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

• Graph A

• Graph B

• Graph C

• Graph D

What is shown here? (click to remove words)

• trend line

• linear regression

• no correlation

• positive correlation

About how many male math teachers were there in 2006?

• 15

• 30

• 35

• 45

The following scatter plot shows Pam's training as she prepares to run a 6 mile race at the end of the month.  Which of the following would be a reasonable approximation for the length of time it would take for her to run 6 miles? 

• 50 min

• 80 min

• 45 min

• 60 min

What type of association does this graph show?

• Positive

• negative

• none

• all of the above

What type of association does this graph have?

• positive

• negative

• none

• all of the above

Describe the association of the scatter plot.

• Linear; positive association

• Linear; negative association

• Non-linear

What type of correlation does this graph have?

• positive 

• negative

• none

• all of the above

The scatter plot below shows the number of books read by students in Mrs. Hall’s English class and their final grades. Which statement represents the best description about the line of best fit?

• The more books students read, the lower their English grade.

• The more books students read, the higher their English grade.

• The fewer books students read, the higher their English grade. 

• No relationship exists between the number of books students read and their English grades. 

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 pages would be in a book with 19 chapters.

• 150 pages

• 170 pages

• 190 pages

• 210 pages