Bivariate Data Exam

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

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

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

___ data for two variables.

• trivariate

• bivariate

• positive

• negative

Bivariate data involves

• one variable

• two variables

• three variables

• four variables

Choose two words from those listed below to best describe the correlation between the two variables.

• strong

• weak

• positive

• negative

Answer explanation

This is weak because the points are not very close together. It is negative because the y values decrease as the x values increase.

Choose two words from those listed below to best describe the correlation between the two variables.

• strong

• weak

• positive

• negative

What is the correlation between length of running start and distance of jump?

• positive:  the further you run the further you jump

• negative: the less you run the less distance of your jump

• positive: the further your running start the less your distance

What type of association does this graph have?

• positive

• negative

• none

• all of the above