Scatter Plots and Trend Lines

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

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CCSS.8.SP.A.1

Front

What does a positive linear correlation indicate?

Back

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

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CCSS.HSS.ID.B.5

Front

What does a negative linear correlation indicate?

Back

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

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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 scatter plot, used to make predictions.

Tags

CCSS.8.SP.A.2

Front

How can you identify a linear relationship in a scatter plot?

Back

A linear relationship can be identified if the data points form a pattern that resembles a straight line.

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CCSS.8.F.A.3

Front

What does it mean if there is no correlation in a scatter plot?

Back

No correlation means that there is no apparent relationship between the two variables; the data points do not follow any pattern.

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CCSS.HSS.ID.B.5

Front

What is the purpose of using scatter plots?

Back

Scatter plots are used to visually represent the relationship between two variables and to identify trends or patterns.

Tags

CCSS.8.SP.A.1

Front

What type of correlation is shown if the points on a scatter plot slope downwards from left to right?

Back

This indicates a negative correlation.

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CCSS.HSF-LE.A.1B

Front

What type of correlation is shown if the points on a scatter plot slope upwards from left to right?

Back

This indicates a positive correlation.

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CCSS.HSF-LE.A.1B

Front

What does a nonlinear relationship look like on a scatter plot?

Back

A nonlinear relationship appears as a curve or a pattern that does not follow a straight line.

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CCSS.8.F.A.3