Correlation Coefficients

Front

What does a correlation coefficient of r = 0 indicate?

Back

No correlation between the variables.

Tags

CCSS.HSS.ID.B.5

Front

What is the range of values for a correlation coefficient?

Back

The correlation coefficient ranges from -1 to 1.

Tags

CCSS.HSS.ID.C.8

Front

What does a correlation coefficient of r = 1 signify?

Back

A perfect positive linear relationship between the variables.

Tags

CCSS.HSS.ID.B.5

Front

What does a correlation coefficient of r = -1 signify?

Back

A perfect negative linear relationship between the variables.

Tags

CCSS.HSS.ID.B.5

Front

What does a correlation coefficient close to 0 indicate?

Back

A weak or no linear relationship between the variables.

Tags

CCSS.HSS.ID.B.5

Front

If r = 0.9, how would you describe the correlation?

Back

Strong positive correlation.

Tags

CCSS.HSS.ID.B.5

Front

If r = -0.8, how would you describe the correlation?

Back

Strong negative correlation.

Tags

CCSS.HSS.ID.B.5

Front

What does a correlation coefficient of r = 0.5 indicate?

Back

Moderate positive correlation.

Tags

CCSS.HSS.ID.B.5

Front

What is the interpretation of a weak positive correlation?

Back

As one variable increases, the other variable tends to increase slightly.

Tags

CCSS.HSS.ID.B.5

Front

What is the interpretation of a strong negative correlation?

Back

As one variable increases, the other variable tends to decrease significantly.

Tags

CCSS.HSS.ID.B.5