Correlation Coefficient

Front

What is a correlation coefficient?

Back

A statistical measure that describes the strength and direction of a relationship between two variables.

Tags

CCSS.HSS.ID.B.5

Front

What does a positive correlation indicate?

Back

As one variable increases, the other variable also increases.

Tags

CCSS.HSS.ID.B.5

Front

What does a negative correlation indicate?

Back

As one variable increases, the other variable decreases.

Tags

CCSS.HSS.ID.B.5

Front

What does no correlation mean?

Back

There is no discernible relationship between the two variables.

Tags

CCSS.HSS.ID.B.5

Front

What is the range of the correlation coefficient?

Back

The correlation coefficient ranges from -1 to +1.

Front

What does a correlation coefficient of +1 signify?

Back

A perfect positive correlation between two variables.

Tags

CCSS.HSS.ID.B.5

Front

What does a correlation coefficient of -1 signify?

Back

A perfect negative correlation between two variables.

Tags

CCSS.HSS.ID.B.5

Front

What does a correlation coefficient of 0 signify?

Back

No correlation between the two variables.

Tags

CCSS.HSS.ID.B.5

Front

How can you visually assess correlation?

Back

By using a scatterplot to plot the data points.

Front

What is a line of best fit?

Back

A straight line that best represents the data on a scatterplot.

Tags

CCSS.8.SP.A.2