Correlation Coefficient

Front

What is the correlation coefficient (r)?

Back

The correlation coefficient (r) is a statistical measure that describes the strength and direction of a relationship between two variables.

Front

What does a correlation coefficient of r = 0 indicate?

Back

A correlation coefficient of r = 0 indicates no correlation between the two variables.

Front

What does a positive correlation mean?

Back

A positive correlation means that as one variable increases, the other variable also tends to increase.

Front

What does a negative correlation mean?

Back

A negative correlation means that as one variable increases, the other variable tends to decrease.

Front

What is the range of the correlation coefficient?

Back

The range of the correlation coefficient is from -1 to 1.

Front

What does r = 1 signify?

Back

r = 1 signifies a perfect positive correlation between two variables.

Front

What does r = -1 signify?

Back

r = -1 signifies a perfect negative correlation between two variables.

Front

What does it mean if r is close to 0?

Back

If r is close to 0, it indicates a weak or no correlation between the variables.

Front

How can you visually assess correlation?

Back

You can visually assess correlation by examining a scatterplot of the data points.

Front

What is a scatterplot?

Back

A scatterplot is a graph that displays values for two variables as points in a Cartesian coordinate system.