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 linear association in a scatterplot indicate?

Back

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

Front

What does a negative linear association in a scatterplot indicate?

Back

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

Front

What is a nonlinear association?

Back

A nonlinear association occurs when the relationship between two variables cannot be accurately described with a straight line.

Front

What is an outlier in a scatterplot?

Back

An outlier is a data point that differs significantly from other observations in the dataset, often appearing far away from the trend of the data.

Front

How can you identify a strong association in a scatterplot?

Back

A strong association is indicated by points that are closely clustered around a line or curve, showing a clear trend.

Front

What does a weak association look like in a scatterplot?

Back

A weak association is indicated by points that are more spread out and do not closely follow a line or curve.

Front

What is the purpose of using scatterplots?

Back

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

Front

What does it mean if a scatterplot shows no association?

Back

No association means that there is no discernible relationship between the two variables; the points are scattered randomly.

Front

What is the difference between linear and nonlinear associations?

Back

Linear associations can be represented by a straight line, while nonlinear associations require curves or other shapes to represent the relationship.