## Standard Error of the Estimate

This section discusses how to compute the standard error of the estimate based on errors of prediction as well as how to compute the standard error of the estimate based on a sample.

### Questions

Question 1 out of 4.
In a regression line, the ________ the standard error of the estimate is, the more accurate the predictions are.

larger

smaller

The standard error of the estimate is not related to the accuracy of the predictions.

Question 2 out of 4.
Linear regression was used to predict Y from X in a certain population. In this population, SSY is 50, the correlation between X and Y is .5, and N is 100. What is the standard error of the estimate?

Question 3 out of 4.
You sample 10 people in a high school to try to predict GPA in 10th grade from GPA in 9th grade. You determine that SSE = 5.8. What is the standard error of the estimate?

Question 4 out of 4.
The graph below represents a regression line predicting Y from X. This graph shows the error of prediction for each of the actual Y values. Use this information to compute the standard error of the estimate in this sample.