Scatterplots Flashcard Review

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 is an outlier in a scatterplot?

Back

An outlier is a data point that differs significantly from other observations. It may indicate variability in the measurement or may suggest a measurement error.

Front

How do you identify outliers on a scatterplot?

Back

Outliers can be identified by looking for points that are far away from the overall pattern of the data.

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 is a linear association?

Back

A linear association is when the data points in a scatterplot can be approximated by a straight line.

Front

What is a non-linear association?

Back

A non-linear association is when the relationship between the variables cannot be accurately represented by a straight line.

Front

What does the strength of a trend in a scatterplot refer to?

Back

The strength of a trend refers to how closely the data points cluster around a line of best fit. Strong trends have points that are close to the line, while weak trends have points that are more spread out.

Front

What is a strong positive trend?

Back

A strong positive trend indicates that the data points closely follow an upward slope, showing a clear relationship where both variables increase together.

Front

What is a moderate negative trend?

Back

A moderate negative trend indicates that the data points show a downward slope, but are not as closely clustered around the line as in a strong trend.