Scatterplots Association Flashcard

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 look like in a scatterplot?

Back

In a positive linear association, as one variable increases, the other variable also increases, resulting in a pattern that slopes upwards from left to right.

Front

What does a negative linear association look like in a scatterplot?

Back

In a negative linear association, as one variable increases, the other variable decreases, resulting in a pattern that slopes downwards from left to right.

Front

What is a non-linear association in a scatterplot?

Back

A non-linear association occurs when the relationship between the variables does not follow a straight line, indicating a more complex relationship.

Front

What does 'no association' mean in the context of scatterplots?

Back

'No association' means that there is no discernible relationship between the two variables, and the points on the scatterplot are scattered randomly.

Front

How can you identify a linear relationship in a scatterplot?

Back

A linear relationship can be identified if the points on the scatterplot form a pattern that can be approximated by a straight line.

Front

What is the purpose of using scatterplots?

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

Front

What is correlation in the context of scatterplots?

Back

Correlation refers to the strength and direction of a linear relationship between two variables, which can be positive, negative, or zero.

Front

What does a correlation coefficient of +1 indicate?

Back

A correlation coefficient of +1 indicates a perfect positive linear relationship between two variables.

Front

What does a correlation coefficient of -1 indicate?

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A correlation coefficient of -1 indicates a perfect negative linear relationship between two variables.