Scatter Plots and Association

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 does it mean when two variables have no association?

Back

It means that changes in one variable do not affect the other variable.

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 is the purpose of using scatter plots?

Back

Scatter plots are used to visually represent the relationship between two variables and to identify patterns or trends.

Front

What does it mean if the points in a scatter plot are widely spread out?

Back

Widely spread out points indicate a weak association between the two variables.

Front

What is the significance of the slope in a scatter plot?

Back

The slope indicates the direction and rate of change between the two variables; a positive slope indicates a positive association, while a negative slope indicates a negative association.

Front

What type of association is represented by a scatter plot with points forming a downward trend?

Back

A negative association.

Front

What type of association is represented by a scatter plot with points forming an upward trend?

Back

A positive association.