3.2b Residuals Visual

Front

What should a residual plot look like if it is appropriate for a linear model?

Back

Random

Front

Would a linear regression model of the data be most appropriate if the residual plot shows a distinct pattern?

Back

NO

Front

Which scatter plot indicated the best linear fit for the data?

Back

A

Front

What are residuals?

Back

The difference between the observed response and the values predicted by the model.

Front

How many positive residuals are there if a residual plot shows 3 positive values?

Back

3

Front

What does a random residual plot indicate about the model?

Back

It suggests that a linear model is appropriate.

Front

What is the significance of a curve in a residual plot?

Back

It indicates that a linear model may not be appropriate.

Front

If a residual plot shows a clear pattern, what does it imply about the model used?

Back

The model may not be capturing the underlying trend in the data.

Front

What is the formula for calculating residuals?

Back

Residual = Observed value - Predicted value

Front

In the context of regression analysis, what does a positive residual indicate?

Back

The observed value is greater than the predicted value.