Scatterplot Introduction

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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.

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CCSS.8.SP.A.1

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What does a positive correlation in a scatterplot indicate?

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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?

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

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CCSS.HSS.ID.B.5

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What does no correlation mean in a scatterplot?

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

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CCSS.HSS.ID.B.5

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What is a 'Line of Best Fit'?

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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.

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CCSS.8.SP.A.2

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How can you identify a positive correlation in a scatterplot?

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You can identify a positive correlation if the points on the scatterplot tend to rise from left to right.

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CCSS.HSF-LE.A.1B

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How can you identify a negative correlation in a scatterplot?

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You can identify a negative correlation if the points on the scatterplot tend to fall from left to right.

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CCSS.HSS.ID.B.5

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What does it mean if a scatterplot shows no association?

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It means that there is no discernible pattern or relationship between the two variables being plotted.

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CCSS.HSS.ID.B.5

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What can be inferred from a scatterplot showing that as exercise hours increase, weight decreases?

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It can be inferred that there is a negative correlation between exercise hours and weight.

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CCSS.HSF-LE.A.1B

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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.

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CCSS.8.SP.A.1