Scatter Plots and Associations

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

Front

What does a positive association in a scatter plot indicate?

Back

A positive association indicates that as one variable increases, the other variable also tends to increase.

Front

What does a negative association in a scatter plot indicate?

Back

A negative association indicates that as one variable increases, the other variable tends to decrease.

Front

What is a linear association?

Back

A linear association means that the relationship between the two variables can be represented by a straight line.

Front

What is a non-linear association?

Back

A non-linear association means that the relationship between the two variables cannot be accurately represented by a straight line.

Front

How can you determine the strength of an association in a scatter plot?

Back

The strength of an association can be determined by how closely the data points cluster around a line; closer points indicate a stronger association.

Front

What does it mean if there is no association in a scatter plot?

Back

No association means that there is no discernible relationship between the two variables; the data points are scattered randomly.

Front

What is the difference between a strong and weak association?

Back

A strong association has data points that are closely packed together, while a weak association has data points that are more spread out.

Front

What type of association is shown if the scatter plot slopes downward?

Back

A downward slope indicates a negative association.

Front

What type of association is shown if the scatter plot slopes upward?

Back

An upward slope indicates a positive association.