Correlation Coefficients

Front

What does a correlation coefficient of r = 0 indicate?

Back

There is no correlation between the two variables.

Front

What is the range of values for a correlation coefficient?

Back

The correlation coefficient ranges from -1 to 1.

Front

What does a correlation coefficient of r = 1 signify?

Back

There is a perfect positive correlation between the two variables.

Front

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

Back

There is a perfect negative correlation between the two variables.

Front

If r = -0.3, how would you describe the correlation?

Back

Weak negative correlation.

Front

What does a correlation coefficient close to 0 indicate?

Back

It indicates a weak or no correlation between the variables.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables.

Front

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

Back

Points that are closely clustered around a line that slopes upwards.

Front

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

Back

Points that are closely clustered around a line that slopes downwards.

Front

What is the formula for calculating the correlation coefficient (r)?

Back