Scatterplots

What type of association does this graph have?

• positive

• negative

• none

• all of the above

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 is a scatter plot?

• A graph that shows the relationship of two data sets.

• A graph drawn using rectangular bars to show how large each value is.

• A graph that shows information that is connected in some way.

• A graph that shows data changing over time.

Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 6 absences should get approximately what score on the final exam?

• 65

• 92

• 70

• 76

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

Which of the graphs would have a correlation coefficient of r = 0.98 ?

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Describe the type and strength of the correlation for the following data.

• Strong Positive

• Weak Positive

• Strong Negative

• Weak Negative

Which of the graphs would have a correlation coefficient of r = 0 ?

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Which of the graphs would have a correlation coefficient of r = -0.97 ?

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