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 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 does no association mean in a scatterplot?

Back

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

Front

What is the dependent variable in a scatterplot?

Back

The dependent variable is the variable that is being measured or tested in an experiment, often plotted on the y-axis.

Front

What is the independent variable in a scatterplot?

Back

The independent variable is the variable that is manipulated or controlled in an experiment, often plotted on the x-axis.

Front

How can you identify a linear relationship in a scatterplot?

Back

A linear relationship can be identified if the points in the scatterplot form a straight line or a pattern that closely resembles a straight line.

Front

What is a non-linear relationship in a scatterplot?

Back

A non-linear relationship occurs when the data points do not form a straight line, indicating a more complex relationship between the variables.

Front

What does it mean if a scatterplot has outliers?

Back

Outliers are data points that differ significantly from other observations. They can indicate variability in the data or errors in measurement.

Front

How do you interpret the slope of a line in a scatterplot?

Back

The slope indicates the direction and steepness of the relationship between the two variables. A positive slope indicates a positive relationship, while a negative slope indicates a negative relationship.