Correlation Coefficient

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 r=0 indicate?

Back

No correlation between the variables.

Front

What does a correlation coefficient of r=1 indicate?

Back

A perfect positive correlation between the variables.

Front

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

Back

A perfect negative correlation between the variables.

Front

What does a weak positive correlation mean?

Back

As one variable increases, the other variable tends to increase slightly.

Front

What does a strong negative correlation mean?

Back

As one variable increases, the other variable tends to decrease significantly.

Front

How can you visually represent the correlation between two variables?

Back

Using a scatter plot.

Front

What is the line of best fit?

Back

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

Front

How do you find the equation of the line of best fit?

Back

By using statistical methods or graphing tools like DESMOS.

Front

What is the significance of the slope in the line of best fit?

Back

It indicates the rate of change between the two variables.