Scatterplots

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What is a scatterplot?

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A scatterplot is a graphical representation of two variables, showing the relationship between them using points on a Cartesian plane.

Tags

CCSS.8.SP.A.1

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What does a positive linear association in a scatterplot indicate?

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

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CCSS.HSF.LE.B.5

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What does a negative linear association in a scatterplot indicate?

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

Tags

CCSS.HSF.LE.B.5

Front

What does a non-linear association in a scatterplot mean?

Back

A non-linear association means that the relationship between the two variables does not follow a straight line.

Tags

CCSS.8.F.A.3

Front

What is the purpose of a trend line in a scatterplot?

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A trend line is used to summarize the relationship between the variables and to make predictions based on the data.

Tags

CCSS.8.SP.A.2

Front

How can you determine the strength of an association in a scatterplot?

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The strength of an association can be determined by how closely the points cluster around the trend line; tighter clusters indicate a stronger association.

Tags

CCSS.HSS.ID.B.5

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

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No association means that changes in one variable do not affect the other variable, and the points are scattered randomly.

Tags

CCSS.HSS.ID.B.5

Front

How do you interpret the slope of a trend line in a scatterplot?

Back

The slope indicates the rate of change between the two variables; a steeper slope means a greater change.

Tags

CCSS.8.EE.B.5

Front

What is the significance of outliers in a scatterplot?

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Outliers are points that fall far from the trend line and can indicate anomalies or errors in data collection.

Tags

CCSS.8.SP.A.1

Front

How can scatterplots be used in real-world applications?

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Scatterplots can be used in various fields such as science, economics, and social studies to analyze relationships and make predictions.

Tags

CCSS.HSS.ID.B.5