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 does a positive association in a scatterplot indicate?

Back

A positive association indicates that as one variable increases, the other variable also increases.

Front

What does a negative association in a scatterplot indicate?

Back

A negative association indicates that as one variable increases, the other variable decreases.

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

What does it mean if a scatterplot shows no association?

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

How can you identify a linear association in a scatterplot?

Back

A linear association can be identified if the points in the scatterplot roughly form a straight line.

Front

What is a non-linear association?

Back

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

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 outliers.

Front

What does the term 'correlation' refer to in statistics?

Back

Correlation refers to the strength and direction of a linear relationship between two variables.

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation implies that one variable directly affects the other.