Correlation Coefficient

Front

What is the correlation coefficient?

Back

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

Front

What does a positive correlation indicate?

Back

As one variable increases, the other variable also increases.

Front

What does a negative correlation indicate?

Back

As one variable increases, the other variable decreases.

Front

What is the range of values for the correlation coefficient?

Back

The correlation coefficient ranges from -1 to 1.

Front

What does a correlation coefficient of 1 mean?

Back

It indicates a perfect positive correlation between two variables.

Front

What does a correlation coefficient of -1 mean?

Back

It indicates a perfect negative correlation between two variables.

Front

What does a correlation coefficient of 0 mean?

Back

It indicates no correlation between the two variables.

Front

How can you visually assess correlation?

Back

By using a scatterplot to plot the values of the two variables.

Front

What is an example of a positive correlation?

Back

The relationship between hours studied and test scores.

Front

What is an example of a negative correlation?

Back

The relationship between the amount of exercise and body weight.