Scatter Plots, Correlation, and Residuals

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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 correlation mean in statistics?

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Correlation refers to a statistical measure that describes the extent to which two variables change together.

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CCSS.HSS.ID.C.9

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What are the types of correlation?

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Positive correlation, Negative correlation, and No correlation.

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CCSS.HSS.ID.C.9

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What is a positive correlation?

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

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CCSS.HSS.ID.B.5

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What is a negative correlation?

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

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CCSS.HSS.ID.B.5

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What does 'no correlation' mean?

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No correlation means that there is no predictable relationship between the two variables.

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CCSS.HSF-LE.A.1B

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What is a residual in statistics?

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A residual is the difference between the observed value and the predicted value in a regression analysis.

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CCSS.HSS.ID.B.6B

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How do you interpret a scatter plot?

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To interpret a scatter plot, look for patterns, trends, and the direction of the relationship between the variables.

Tags

CCSS.8.SP.A.1

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What is the line of best fit?

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

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CCSS.8.EE.B.5

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What does a correlation coefficient indicate?

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A correlation coefficient indicates the strength and direction of a linear relationship between two variables.

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CCSS.HSS.ID.B.5