Scatterplots and association

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 a linear relationship in a scatterplot?

Back

A linear relationship is when the data points in a scatterplot can be approximated by a straight line.

Front

What is a non-linear relationship in a scatterplot?

Back

A non-linear relationship is when the data points do not follow a straight line and may curve or cluster in a different pattern.

Front

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

Back

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

Front

How can you identify a positive linear relationship in a scatterplot?

Back

A positive linear relationship can be identified by a pattern of points that slope upwards from left to right.

Front

How can you identify a negative linear relationship in a scatterplot?

Back

A negative linear relationship can be identified by a pattern of points that slope downwards from left to right.

Front

What is the purpose of using scatterplots?

Back

Scatterplots are used to visually represent the relationship between two variables and to identify trends, patterns, or correlations.

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 zero.