Correlation Coefficient

Front

What is the correlation coefficient?

Back

The correlation coefficient is a statistical measure that describes the strength and direction of a relationship between two variables, typically denoted as 'r'.

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CCSS.HSS.ID.C.8

Front

What does a positive correlation coefficient indicate?

Back

A positive correlation coefficient indicates that as one variable increases, the other variable also tends to increase.

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CCSS.HSS.ID.B.5

Front

What does a negative correlation coefficient indicate?

Back

A negative correlation coefficient indicates that as one variable increases, the other variable tends to decrease.

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CCSS.HSS.ID.B.5

Front

What is the range of values for the correlation coefficient?

Back

The correlation coefficient ranges from -1 to +1.

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CCSS.HSS.ID.C.8

Front

What does an r value of 0 indicate?

Back

An r value of 0 indicates no correlation between the two variables.

Tags

CCSS.HSS.ID.B.5

Front

What does an r value of -0.89 suggest about the relationship between two variables?

Back

An r value of -0.89 suggests a strong negative correlation between the two variables.

Tags

CCSS.HSS.ID.B.5

Front

What does an r value of +0.5 suggest about the relationship between two variables?

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An r value of +0.5 suggests a moderate positive correlation between the two variables.

Tags

CCSS.HSS.ID.B.5

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, while causation indicates that one variable directly affects the other.

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CCSS.HSS.ID.C.9

Front

What type of graph is commonly used to display the relationship between two variables?

Back

A scatter plot is commonly used to display the relationship between two variables.

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What does a scatter plot with no discernible pattern indicate?

Back

A scatter plot with no discernible pattern indicates no correlation or association between the variables.

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CCSS.HSS.ID.B.5