Scatter Plots and Line of Best Fit

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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

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What does a positive correlation in a scatter plot indicate?

Back

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

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CCSS.HSS.ID.B.5

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What does a negative correlation in a scatter plot indicate?

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

Tags

CCSS.HSS.ID.B.5

Front

What is the line of best fit?

Back

The line of best fit is a straight line that best represents the data on a scatter plot, showing the trend of the data.

Tags

CCSS.8.EE.B.5

Front

How do you determine the line of best fit?

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The line of best fit can be determined using methods such as least squares regression, which minimizes the distance between the data points and the line.

Tags

CCSS.8.EE.B.5

Front

What is the purpose of the line of best fit?

Back

The line of best fit is used to make predictions about one variable based on the value of another variable.

Tags

CCSS.8.EE.B.5

Front

What does it mean if a scatter plot has no correlation?

Back

If a scatter plot has no correlation, it means there is no discernible relationship between the two variables.

Tags

CCSS.HSF-LE.A.1B

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How can you use a scatter plot to make predictions?

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You can use a scatter plot to make predictions by extending the line of best fit to estimate values for one variable based on known values of the other.

Front

What is the equation of a line in slope-intercept form?

Back

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CCSS.8.EE.B.6

CCSS.8.F.A.3

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What does the slope of the line of best fit represent?

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The slope of the line of best fit represents the rate of change between the two variables.

Tags

CCSS.8.EE.B.5