Residuals and Correlation Coefficient

Front

As study time _______________

Back

increases ; errors decrease.

Front

What should a residual plot look like?

Back

Random.

Front

How do you calculate a residual?

Back

Actual - Predicted.

Front

If the correlation coefficient is r = -0.89, what type of data is shown?

Back

Strong negative.

Front

Determine the Correlation Coefficient: -0.19. Is it weak, moderate, or strong?

Back

Weak.

Front

What is a residual?

Back

The difference between the actual value and the predicted value.

Front

What does a positive correlation coefficient indicate?

Back

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

Front

What does a negative correlation coefficient indicate?

Back

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

Front

What is the range of the correlation coefficient?

Back

-1 to 1.

Front

What does a correlation coefficient of 0 indicate?

Back

No correlation between the variables.