Correlation Coefficient

Front

What is a correlation coefficient?

Back

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

Front

What does a positive correlation coefficient indicate?

Back

As one variable increases, the other variable also tends to increase.

Front

What does a negative correlation coefficient indicate?

Back

As one variable increases, the other variable tends to decrease.

Front

What does a correlation coefficient of 0 indicate?

Back

There is no linear relationship between the two variables.

Front

What is the range of values for a correlation coefficient?

Back

The correlation coefficient ranges from -1 to 1.

Front

What does a correlation coefficient of -1 signify?

Back

A perfect negative linear relationship between two variables.

Front

What does a correlation coefficient of 1 signify?

Back

A perfect positive linear relationship between two variables.

Front

How can you visually assess correlation?

Back

By using a scatterplot to observe the pattern of data points.

Front

What type of correlation is shown if the points on a scatterplot form a downward slope?

Back

Negative correlation.

Front

What type of correlation is shown if the points on a scatterplot form an upward slope?

Back

Positive correlation.