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 correlation in a scatterplot indicate?

Back

A positive correlation indicates that as one variable increases, the other variable also increases.

Front

What does a negative correlation in a scatterplot indicate?

Back

A negative correlation indicates that as one variable increases, the other variable decreases.

Front

What does no correlation mean in a scatterplot?

Back

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

Front

What is a correlation coefficient?

Back

A correlation coefficient is a numerical measure of the strength and direction of a relationship between two variables, ranging from -1 to 1.

Front

What is a cluster in a scatterplot?

Back

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

Front

What does it mean if points in a scatterplot are widely spread out?

Back

Widely spread out points suggest a weak or no correlation between the variables.

Front

How can you identify a positive correlation in a scatterplot?

Back

A positive correlation can be identified by an upward trend in the data points from left to right.

Front

How can you identify a negative correlation in a scatterplot?

Back

A negative correlation can be identified by a downward trend in the data points from left to right.

Front

What is an outlier in a scatterplot?

Back

An outlier is a point that is far away from the other points in the scatterplot, which may indicate an anomaly in the data.