Scatter Plots as Linear Quadratic Exponential

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

Estimate the correlation coefficient for this scatterplot.

• r = 0.75

• r = 0.89

• r = 0.14

• r = -0.97

Estimate the correlation coefficient for this scatterplot.

• r = -0.9

• r = 1

• r = 0.9

• r = -1

Which regression model would have the coefficient of determination closest to +1.0?

• Linear

• Quadratic

• Exponential

• Logarithmic

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

If a scatterplot has no association then...

• ...it has no ordered pairs

• ...it has ordered pairs that have a negative pattern

• ...its ordered pairs have no predictable pattern

• ...if it makes a bear on a graph (grrr!)

Estimate the correlation coefficient.

• r=1

• r=-1

• r=0.5

• r=-0.5

Which curve would best fit the data presented in the scatter plot?

• Linear

• Quadratic

• Exponential

• Power

Mr. Thomas wanted to know if the amount of class time given to students affected their test scores. What kind of relationship between class study time and test scores is show on the scatter plot?

• No correlation

• Positive correlation

• Negative correlation