Scatterplots

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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 the 'Line of Best Fit' represent in a scatterplot?

Back

The '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.SP.A.2

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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.

Tags

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 are outliers in a scatterplot?

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Outliers are data points that are significantly different from other observations in the dataset, often lying far away from the 'Line of Best Fit'.

Tags

CCSS.8.SP.A.1

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How can you determine the strength of a correlation in a scatterplot?

Back

The strength of a correlation can be determined by how closely the data points cluster around the 'Line of Best Fit'; closer points indicate a stronger correlation.

Tags

CCSS.HSS.ID.B.5

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What does it mean if a scatterplot has no correlation?

Back

No correlation means that there is no apparent relationship between the two variables; the data points are scattered randomly.

Tags

CCSS.HSS.ID.B.5

Front

What is the purpose of using a scatterplot?

Back

Scatterplots are used to visually assess the relationship between two quantitative variables and to identify trends, correlations, or outliers.

Tags

CCSS.8.SP.A.1

Front

What is the difference between a strong and weak correlation?

Back

A strong correlation means the data points are closely aligned with the 'Line of Best Fit', while a weak correlation means the points are more spread out.

Tags

CCSS.HSS.ID.B.5

Front

How do you identify a line of best fit on a scatterplot?

Back

A line of best fit can be identified by drawing a straight line that minimizes the distance between the line and all the data points.

Tags

CCSS.8.EE.B.5