Bivariate Data

According to the data, which of the following BEST describes the relationship between age and shoe size?

• positive linear association

• negative linear association

• positive non-linear association

• negative non-linear association

The relationship between grades on a test and the amount of time studied is graphed in the scatterplot below. The line of best fit for this data set is y = 0.86x + 36.59. What is the meaning of the slope?

• If students do not study, they can expect a grade of 36.

• For every 10 minutes students study, they can expect their grade to improve by 8.6 points.

• For every 10 points more in the test score, students must study an additional 8.6 minutes.

• If students study for 1 hour, they can expect a grade of 86

What type of association exists between the data points?

• positive association

• negative association

• positive then negative association

• no association

The scatterplot below shows the number of bats in an area for the past 10 years.

Which equation best fits the data?

• y = –300x + 8,500

• y = –200x + 9,000

• y = 200x + 9,000

• y = 300x + 8,500

___ data for two variables.

• trivariate

• bivariate

• positive

• negative

What is Bivariate Data?

• A set of data that shows a relationship between two variables.

• A set of data that shows a relationship between three variables.

Bivariate data is the study of how many variables?

• 3

• 1

• 2

• 0

Bivariate data involves

• one variable

• two variables

• three variables

• four variables

The graph below shows the amount of time students spent on homework and the amount of time spent working at a job each week.

Which equation best fits the data?

The scatterplot below shows the value of a boat over several years.
Which equation best fits the data?

• y = –8,000x + 58,000

• y = –5,000x + 60,000

• y= 5,000x + 60,000

• y = 8,000x + 58,000