Scatterplots 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 positive association in a scatterplot indicate?

Back

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

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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.

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What is a non-linear association?

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A non-linear association is when the data points in a scatterplot do not follow a straight line and may curve or cluster in a different pattern.

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What does 'no association' mean in a scatterplot?

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

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How can you identify a linear positive association in a scatterplot?

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A linear positive association can be identified when the points slope upwards from left to right, indicating that both variables increase together.

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How can you identify a linear negative association in a scatterplot?

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A linear negative association can be identified when the points slope downwards from left to right, indicating that as one variable increases, the other decreases.

Front

What is the significance of outliers in a scatterplot?

Back

Outliers are points that fall far away from the general pattern of the data. They can affect the overall association and may indicate special cases.

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What is correlation?

Back

Correlation is a statistical measure that describes the extent to which two variables change together.