Correlation Coefficient

Front

What is the correlation coefficient?

Back

A statistical measure that describes the strength and direction of a relationship between two variables, ranging from -1 to 1.

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

What is a strong positive correlation?

Back

A correlation coefficient close to 1, indicating that as one variable increases, the other variable tends to also increase.

Front

What is a strong negative correlation?

Back

A correlation coefficient close to -1, indicating that as one variable increases, the other variable tends to decrease.

Front

What is a moderate correlation?

Back

A correlation coefficient between -0.5 and 0.5, indicating a weaker relationship between the variables.

Front

How do you interpret a correlation coefficient of r ≈ -0.8?

Back

This indicates a strong negative correlation between the two variables.

Front

If x increases and y decreases, what type of correlation is this?

Back

Negative correlation.

Front

What is the formula for calculating the correlation coefficient?

Back