Scatterplots

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 observation in the dataset.

Front

What does a positive correlation in a scatterplot indicate?

Back

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

Front

What does a negative correlation in a scatterplot indicate?

Back

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

Front

What does no correlation mean in a scatterplot?

Back

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

Front

What is a line of best fit?

Back

A line of best fit is a straight line that best represents the data on a scatterplot, showing the general direction of the data points.

Front

How can you identify a positive correlation in a scatterplot?

Back

You can identify a positive correlation if the points on the scatterplot tend to rise from left to right.

Front

How can you identify a negative correlation in a scatterplot?

Back

You can identify a negative correlation if the points on the scatterplot tend to fall from left to right.

Front

What is the purpose of using a scatterplot?

Back

The purpose of using a scatterplot is to visually display the relationship between two quantitative variables.

Front

What does it mean if a scatterplot shows a cluster of points?

Back

A cluster of points indicates that there is a strong relationship between the two variables in that area of the graph.

Front

What is an example of a positive correlation?

Back

An example of a positive correlation is the relationship between study time and test scores; generally, more study time leads to higher test scores.