Correlation Coefficient

Front

What is the correlation coefficient (r)?

Back

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

Front

What does a correlation coefficient of r = -0.89 indicate?

Back

Strong negative correlation.

Front

What does a correlation coefficient of r = 0.3 indicate?

Back

Weak positive correlation.

Front

What type of association does a scatter plot with no clear pattern represent?

Back

No association.

Front

For which type of functions is the correlation coefficient (r) useful?

Back

Linear functions.

Front

What does a correlation coefficient of r = 1 signify?

Back

Perfect positive correlation.

Front

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

Back

Perfect negative correlation.

Front

What is the range of possible values for the correlation coefficient (r)?

Back

From -1 to 1.

Front

What does a correlation coefficient close to 0 indicate?

Back

Little to no linear relationship between the variables.

Front

If r ≈ -0.8, what can be inferred about the relationship?

Back

There is a strong negative correlation.