Correlation Coefficient

Front

What is a correlation coefficient?

Back

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

Front

What values can a correlation coefficient take?

Back

A correlation coefficient can range from -1 to +1.

Front

What does a correlation coefficient of +1 indicate?

Back

A correlation coefficient of +1 indicates a perfect positive correlation between two variables.

Front

What does a correlation coefficient of -1 indicate?

Back

A correlation coefficient of -1 indicates a perfect negative correlation between two variables.

Front

What does a correlation coefficient of 0 indicate?

Back

A correlation coefficient of 0 indicates no correlation between two variables.

Front

What is a positive correlation?

Back

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

Front

What is a negative correlation?

Back

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

Front

How can you determine if a correlation is weak, moderate, or strong?

Back

A correlation is considered weak if the coefficient is between 0 and 0.3, moderate if between 0.3 and 0.7, and strong if between 0.7 and 1.

Front

What is the significance of a correlation coefficient of -0.19?

Back

A correlation coefficient of -0.19 indicates a weak negative correlation.

Front

What type of correlation is shown in a scatter plot where points trend upwards?

Back

An upward trend in a scatter plot indicates a positive correlation.