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 correlation coefficient of 1 indicate?

Back

A perfect positive correlation, meaning as one variable increases, the other variable also increases.

Front

What does a correlation coefficient of -1 indicate?

Back

A perfect negative correlation, meaning as one variable increases, the other variable decreases.

Front

What does a correlation coefficient of 0 indicate?

Back

No correlation, meaning there is no predictable relationship between the two variables.

Front

How is the strength of a correlation determined?

Back

By the absolute value of the correlation coefficient: 0-0.3 is weak, 0.3-0.7 is moderate, and 0.7-1 is strong.

Front

What is a scatter plot?

Back

A graphical representation of two variables, showing the relationship between them.

Front

What does a positive correlation look like on a scatter plot?

Back

Points that trend upwards from left to right.

Front

What does a negative correlation look like on a scatter plot?

Back

Points that trend downwards from left to right.

Front

What is an example of a weak negative correlation?

Back

A correlation coefficient of -0.19.

Front

What is an example of a strong positive correlation?

Back

A correlation coefficient of 0.934.