Scatterplots

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What is a scatterplot?

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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 in a scatterplot?

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A linear association means that the points in the scatterplot can be approximated by a straight line.

Tags

CCSS.8.F.A.3

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What is a non-linear association in a scatterplot?

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A non-linear association means that the relationship between the variables cannot be accurately represented by a straight line.

Tags

CCSS.8.F.A.3

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How can you identify the trend in a scatterplot?

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The trend can be identified by observing the overall direction of the points in the scatterplot.

Tags

CCSS.8.EE.B.5

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What is a trend line?

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A trend line is a straight line that best represents the data on a scatterplot, showing the general direction of the data.

Tags

CCSS.HSF-LE.A.1B

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How do you make predictions using a scatterplot?

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You can make predictions by extending the trend line and estimating the value of one variable based on the value of the other.

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What does it mean if there is no association in a scatterplot?

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No association means that there is no discernible pattern or relationship between the two variables.

Tags

CCSS.HSS.ID.B.5

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What is the purpose of using scatterplots in data analysis?

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Scatterplots are used to visually assess the relationship between two quantitative variables.

Tags

CCSS.8.SP.A.1