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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 correlation in a scatterplot indicate?

Back

A positive correlation 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 correlation in a scatterplot indicate?

Back

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

Tags

CCSS.HSS.ID.B.5

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What does no correlation mean in a scatterplot?

Back

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

Tags

CCSS.HSS.ID.B.5

Front

What is a line of best fit?

Back

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

Tags

CCSS.8.EE.B.5

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How can you estimate values using a scatterplot?

Back

You can estimate values by locating the corresponding point on the scatterplot and using the line of best fit to find the approximate value.

Front

What is the purpose of using a scatterplot?

Back

The purpose of using a scatterplot is to visually display the relationship between two quantitative variables.

Tags

CCSS.8.SP.A.1

Front

What does it mean if the points on a scatterplot are tightly clustered around the line of best fit?

Back

If the points are tightly clustered around the line of best fit, it indicates a strong correlation between the two variables.

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What does it mean if the points on a scatterplot are widely spread out?

Back

If the points are widely spread out, it indicates a weak correlation between the two variables.

Tags

CCSS.HSS.ID.B.5

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How do you identify a linear relationship in a scatterplot?

Back

A linear relationship can be identified if the points on the scatterplot form a pattern that can be approximated by a straight line.

Tags

CCSS.8.F.A.3