Algebra Bivariate Data

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

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

• strong

• weak

• positive

• negative

In how many months did the City Central store sell more books than the Chatswood store?

• 1

• 2

• 3

• 4

___ data for two variables.

• trivariate

• bivariate

• positive

• negative

Write the equation that best matches the graph shown.

• y = 4x

• y = 4x - 3

• y = 4/3 x + 4

• y = 4/3 x - 3

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

_________ is a diagram that uses coordinates to display values for two variables for a set of data.

• dot plot

• scatter plot

• histogram

• stem and leaf plot

The correlation is positive if the y variable generally increases as the x variable increases.

• True

• False