Correlation Coefficient After Notes Live

Front

What is a positive correlation?

Back

A positive correlation is a relationship between two variables where, as one variable increases, the other variable also increases.

Front

What is a negative correlation?

Back

A negative correlation is a relationship between two variables where, as one variable increases, the other variable decreases.

Front

What does a correlation coefficient of r = 1 indicate?

Back

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

Front

What does a correlation coefficient of r = -1 indicate?

Back

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

Front

What does a correlation coefficient of r = 0 indicate?

Back

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

Front

How do you interpret a correlation coefficient of r = 0.9?

Back

A correlation coefficient of r = 0.9 indicates a strong positive correlation between two variables.

Front

How do you interpret a correlation coefficient of r = -0.9?

Back

A correlation coefficient of r = -0.9 indicates a strong negative correlation between two variables.

Front

What is the range of possible values for a correlation coefficient?

Back

The range of possible values for a correlation coefficient is from -1 to 1.

Front

What is the purpose of a scatterplot in correlation analysis?

Back

A scatterplot visually represents the relationship between two variables, helping to identify the type and strength of correlation.

Front

What does it mean if the points on a scatterplot are tightly clustered around a line?

Back

If the points on a scatterplot are tightly clustered around a line, it indicates a strong correlation between the two variables.