Correlation

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What is correlation?

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Correlation is 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 is a positive correlation?

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A positive correlation occurs when an increase in one variable leads to an increase in another variable.

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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 occurs when an increase in one variable leads to a decrease in another variable.

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CCSS.HSS.ID.B.5

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What does a correlation coefficient of 1 indicate?

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A correlation coefficient of 1 indicates a perfect positive correlation.

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CCSS.HSS.ID.B.5

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What does a correlation coefficient of -1 indicate?

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A correlation coefficient of -1 indicates a perfect negative correlation.

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CCSS.HSS.ID.B.5

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What does a correlation coefficient of 0 indicate?

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A correlation coefficient of 0 indicates no correlation between the variables.

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CCSS.HSS.ID.B.5

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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.

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CCSS.8.EE.B.5

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How do you determine the strength of a correlation?

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The strength of a correlation is determined by the correlation coefficient, which ranges from -1 to 1.

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CCSS.HSS.ID.B.5

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What is an example of a positive correlation?

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An example of a positive correlation is the relationship between study time and test scores.

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CCSS.HSS.ID.B.5

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What is an example of a negative correlation?

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An example of a negative correlation is the relationship between the amount of exercise and body weight.

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CCSS.HSS.ID.B.5