Correlation Coefficient Practice

Front

What is a correlation coefficient?

Back

A statistical measure that describes the strength and direction of a relationship between two variables, ranging from -1 to 1.

Front

What does a correlation coefficient of 1 indicate?

Back

A perfect positive linear relationship between two variables.

Front

What does a correlation coefficient of -1 indicate?

Back

A perfect negative linear relationship between two variables.

Front

What does a correlation coefficient of 0 indicate?

Back

No linear relationship between the two variables.

Front

What is a strong positive correlation?

Back

A correlation coefficient close to 1, indicating that as one variable increases, the other variable also increases.

Front

What is a strong negative correlation?

Back

A correlation coefficient close to -1, indicating that as one variable increases, the other variable decreases.

Front

What is a weak positive correlation?

Back

A correlation coefficient close to 0 but positive, indicating a slight tendency for one variable to increase as the other increases.

Front

What is a weak negative correlation?

Back

A correlation coefficient close to 0 but negative, indicating a slight tendency for one variable to decrease as the other increases.

Front

How do you interpret a correlation coefficient of r = 0.9?

Back

This indicates a strong positive correlation between the two variables.

Front

How do you interpret a correlation coefficient of r = -0.45?

Back

This indicates a moderate negative correlation between the two variables.