Types of Correlation

Front

What is correlation?

Back

Correlation is a statistical measure that describes the extent to which two variables change together.

Front

What does a positive correlation indicate?

Back

A positive correlation indicates that as one variable increases, the other variable also increases.

Front

What does a negative correlation indicate?

Back

A negative correlation indicates that as one variable increases, the other variable decreases.

Front

What is the range of correlation coefficients?

Back

The range of correlation coefficients is from -1 to +1.

Front

What does an r value of 0 indicate?

Back

An r value of 0 indicates no correlation between the two variables.

Front

What type of correlation is represented by r = 0.86?

Back

Strong positive correlation.

Front

What type of correlation is represented by r = -0.98?

Back

Strong negative correlation.

Front

What type of correlation is represented by r = 0.2?

Back

Weak positive correlation.

Front

What type of correlation is represented by r = -0.3?

Back

Weak negative correlation.

Front

How does temperature affect heater sales?

Back

The higher the temperature, the less heaters are sold.