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 linear relationship in a scatterplot indicate?

Back

A linear relationship indicates that as one variable increases or decreases, the other variable tends to do the same in a consistent manner, forming a straight line when graphed.

Front

What is a cluster in a scatterplot?

Back

A cluster is a group of points that are close together in a scatterplot, indicating that the values of the two variables are similar.

Front

What is an outlier in a scatterplot?

Back

An outlier is a point that is far outside the main cluster of points in a scatterplot, which may indicate an unusual observation.

Front

How can you determine if there is a correlation in a scatterplot?

Back

You can determine correlation by observing the direction and strength of the relationship between the points; a clear pattern suggests correlation.

Front

What does a positive correlation look like in a scatterplot?

Back

A positive correlation appears as points that trend upwards from left to right, indicating that as one variable increases, the other also increases.

Front

What does a negative correlation look like in a scatterplot?

Back

A negative correlation appears as points that trend downwards from left to right, indicating that as one variable increases, the other decreases.

Front

What does it mean if a scatterplot shows no correlation?

Back

No correlation means that there is no discernible pattern in the data points; they are scattered randomly.

Front

What is the purpose of using scatterplots?

Back

Scatterplots are used to visually represent the relationship between two variables, making it easier to identify trends, correlations, and outliers.

Front

How can you identify a linear relationship in a scatterplot?

Back

A linear relationship can be identified if the points roughly form a straight line, either increasing or decreasing.