Correlation Coefficient Practice

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 relationship between the two variables.

Front

What is a scatter plot?

Back

A graph that displays values for typically two variables for a set of data.

Front

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

Back

Points that are loosely 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

How can you determine the strength of a correlation?

Back

By looking at how closely the points on a scatter plot fit a straight line.

Front

What is the range of the correlation coefficient?

Back

The correlation coefficient ranges from -1 to 1.

Front

What does a correlation coefficient of r = 0.5 indicate?

Back

A moderate positive correlation.