Correlation Coefficient

Front

What is the range of values for the correlation coefficient 'r'?

Back

-1 ≤ r ≤ 1

Front

What does a correlation coefficient of -1 indicate?

Back

A perfect negative linear relationship between two variables.

Tags

CCSS.HSS.ID.B.5

Front

What does a correlation coefficient of 1 indicate?

Back

A perfect positive linear relationship between two variables.

Tags

CCSS.HSS.ID.B.5

Front

What does a correlation coefficient of 0 indicate?

Back

No linear relationship between the two variables.

Tags

CCSS.HSS.ID.B.5

Front

What type of association is indicated by a correlation coefficient between 0 and 0.3?

Back

Weak positive association.

Tags

CCSS.HSS.ID.B.5

Front

What type of association is indicated by a correlation coefficient between 0.3 and 0.7?

Back

Moderate positive association.

Tags

CCSS.HSS.ID.B.5

Front

What type of association is indicated by a correlation coefficient greater than 0.7?

Back

Strong positive association.

Tags

CCSS.HSS.ID.B.5

Front

What type of association is indicated by a correlation coefficient between -0.3 and -0.7?

Back

Moderate negative association.

Tags

CCSS.HSS.ID.B.5

Front

What type of association is indicated by a correlation coefficient less than -0.7?

Back

Strong negative association.

Tags

CCSS.HSS.ID.B.5

Front

How can you visually assess the correlation between two variables?

Back

By using a scatter plot.

Tags

CCSS.HSS.ID.B.5