Correlation Coefficient

Front

What is a correlation coefficient?

Back

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

Front

What does a positive correlation indicate?

Back

As one variable increases, the other variable also increases.

Front

What does a negative correlation indicate?

Back

As one variable increases, the other variable decreases.

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 0 mean?

Back

It indicates no correlation between the two variables.

Front

What is the line of best fit?

Back

A straight line that best represents the data on a scatter plot.

Front

How can you identify a strong positive correlation on a graph?

Back

The points on the graph will be closely clustered around a line that slopes upwards.

Front

How can you identify a strong negative correlation on a graph?

Back

The points on the graph will be closely clustered around a line that slopes downwards.

Front

What is an example of a positive correlation in real life?

Back

The relationship between hours studied and test scores.

Front

What is an example of a negative correlation in real life?

Back

The relationship between the amount of exercise and body weight.