Classifying Associations

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What is a positive correlation?

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A positive correlation is a relationship between two variables where an increase in one variable leads to an increase in the other variable.

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CCSS.HSS.ID.B.5

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What is a negative correlation?

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A negative correlation is a relationship between two variables where an increase in one variable leads to a decrease in the other variable.

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CCSS.HSS.ID.B.5

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What does no correlation mean?

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No correlation means there is no relationship between two variables; changes in one variable do not affect the other.

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CCSS.HSS.ID.B.5

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What is a scatterplot?

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A scatterplot is a graph that shows the relationship between two quantitative variables, with points representing individual data points.

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How can you identify a positive correlation in a scatterplot?

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In a scatterplot, a positive correlation is identified when the points trend upwards from left to right.

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CCSS.HSS.ID.B.5

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How can you identify a negative correlation in a scatterplot?

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In a scatterplot, a negative correlation is identified when the points trend downwards from left to right.

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CCSS.HSS.ID.B.5

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What is a non-linear association?

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

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CCSS.HSS.ID.B.5

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What is an example of a positive correlation in real life?

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An example of a positive correlation is the relationship between study time and test scores; as study time increases, test scores tend to increase.

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CCSS.HSS.ID.B.5

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What is an example of a negative correlation in real life?

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An example of a negative correlation is the relationship between temperature and the number of hot chocolate sales; as temperature increases, hot chocolate sales tend to decrease.

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CCSS.HSS.ID.B.5

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What does it mean if a scatterplot shows no correlation?

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If a scatterplot shows no correlation, it means that there is no discernible pattern or relationship between the two variables.

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CCSS.HSS.ID.B.5