Scatterplot Intro

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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 by displaying data points on a two-dimensional axis.

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CCSS.8.SP.A.1

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What does a positive relationship in a scatterplot indicate?

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A positive relationship indicates that as one variable increases, the other variable also increases.

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What does a negative relationship in a scatterplot indicate?

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A negative relationship indicates that as one variable increases, the other variable decreases.

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What does it mean if a scatterplot shows no relationship?

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It means that there is no discernible pattern or correlation between the two variables.

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CCSS.HSS.ID.B.5

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How can you identify a positive correlation in a scatterplot?

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A positive correlation can be identified by a pattern where data points slope 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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A negative correlation can be identified by a pattern where data points slope downwards from left to right.

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CCSS.HSS.ID.B.5

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What is an example of a negative correlation?

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An example of a negative correlation is the relationship between the age of a car and its value.

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CCSS.HSS.ID.B.5

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What is an example of a positive correlation?

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An example of a positive correlation is the relationship between the amount of rainfall and the water level in a lake.

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CCSS.HSS.ID.B.5

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What does it mean if a scatterplot has a cluster of points?

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A cluster of points indicates that there is a strong relationship between the two variables in that area.

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CCSS.8.SP.A.1

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What is the purpose of using scatterplots?

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Scatterplots are used to visually represent the relationship between two variables and to identify trends or correlations.

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