When drawing a regression line for a linear prediction rule,the minimum number of predicted points on a graph that must be located is
A)1.
B)2.
C)1 if it is a positively sloped line; 2 if it is a negatively sloped line.
D)2 if it is a positively sloped line; 1 if it is a negatively sloped line.

Question

Quizplus · Accepted Answer

To draw a regression line, at least two predicted points must be located on the graph. This is because a regression line is the line of best fit that minimizes the sum of squared residuals between the predicted values and the actual values. Therefore, we need two points to determine the line.

When Drawing a Regression Line for a Linear Prediction Rule,the