Scatterplots - Identify association

Front

What is a scatterplot?

Back

A scatterplot is a graph that displays values for typically two variables for a set of data. Each point represents an ordered pair.

Front

What does it mean if a scatterplot has no association?

Back

It means that the ordered pairs have no predictable pattern.

Front

What is a positive association in a scatterplot?

Back

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

Front

What is a negative association in a scatterplot?

Back

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

Front

What does linear correlation indicate in a scatterplot?

Back

Linear correlation indicates that the relationship between the two variables can be represented by a straight line.

Front

What does non-linear correlation indicate in a scatterplot?

Back

Non-linear correlation indicates that the relationship between the two variables cannot be represented by a straight line.

Front

How can you describe a linear and negative correlation?

Back

In a linear and negative correlation, the points on the scatterplot slope downwards from left to right.

Front

How can you describe a linear and positive correlation?

Back

In a linear and positive correlation, the points on the scatterplot slope upwards from left to right.

Front

What does it mean if a scatterplot shows no association?

Back

It means there is no discernible pattern or relationship between the two variables.

Front

What is an example of a negative association in real life?

Back

An example is the relationship between the number of hours studied and the number of errors made on a test; as study hours increase, errors tend to decrease.