Scatterplots

Front

What is a scatterplot?

Back

A scatterplot 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 scatterplot 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 scatterplot indicate?

Back

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

Front

What is correlation in the context of scatterplots?

Back

Correlation refers to the strength and direction of a relationship between two variables, which can be positive, negative, or none.

Front

What does it mean if a scatterplot shows no correlation?

Back

No correlation means that there is no discernible relationship between the two variables; changes in one do not affect the other.

Front

What is a linear association in a scatterplot?

Back

A linear association means that the data points can be approximated by a straight line, indicating a consistent relationship.

Front

What is a non-linear association in a scatterplot?

Back

A non-linear association means that the relationship between the variables cannot be represented by a straight line; it may curve or change direction.

Front

What does the strength of a scatterplot refer to?

Back

The strength of a scatterplot refers to how closely the data points cluster around a line or curve; it can be strong, moderate, or weak.

Front

What is a cluster in a scatterplot?

Back

A cluster is a group of data points that are close together, indicating a concentration of values in that area.

Front

How can you determine the type of correlation from a scatterplot?

Back

You can determine the type of correlation by observing the direction of the data points: upward for positive, downward for negative, and scattered for none.