Scatterplot Associations

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.

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What does a linear relationship in a scatterplot indicate?

Back

A linear relationship indicates that as one variable increases or decreases, the other variable tends to do the same in a consistent manner, forming a straight line.

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What does a non-linear relationship in a scatterplot indicate?

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A non-linear relationship indicates that the relationship between the variables does not follow a straight line; it may curve or change direction.

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What does a positive association in a scatterplot mean?

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

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What does a negative association in a scatterplot mean?

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

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What does 'no association' mean in the context of a scatterplot?

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

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How can you identify a linear relationship in a scatterplot?

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A linear relationship can be identified by a pattern of points that closely follow a straight line.

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How can you identify a non-linear relationship in a scatterplot?

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A non-linear relationship can be identified by a pattern of points that do not follow a straight line, often forming curves or clusters.

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What is the significance of the slope in a linear scatterplot?

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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.

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What is an example of a positive linear association?

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An example of a positive linear association is the relationship between hours studied and test scores; generally, more study hours lead to higher scores.