Scatterplots Associations

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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.

Tags

CCSS.8.SP.A.1

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What does a positive association in a scatterplot indicate?

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

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CCSS.HSS.ID.B.5

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What does a negative association in a scatterplot indicate?

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

Tags

CCSS.HSS.ID.B.5

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What is a linear association?

Back

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

Tags

CCSS.8.F.A.3

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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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CCSS.8.F.A.3

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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.

Tags

CCSS.HSS.ID.B.5

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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.

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What is the significance of outliers in a scatterplot?

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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.

Tags

CCSS.8.SP.A.1

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What is correlation?

Back

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

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CCSS.HSS.ID.C.9