If you want to plot the regression line, after having found the regression equation, you need to calculate Ŷ for _______ value(s) of X .
A) all possible
B) one
C) a minimum of two
D) at least five

Question

If you want to plot the regression line, after having found the regression equation, you need to calculate Ŷ  for _______ value(s) of X .
A) all possible
B) one
C) a minimum of two
D) at least five

Quizplus · Accepted Answer

To plot a regression line, you need to have a minimum of two values of X so that you can plot the corresponding Ŷ values. If you only have one value of X, you won't even be able to draw a line. If you have all possible values of X, you can plot the entire regression line, but it may be unnecessary if you only need to see a representation of the relationship between the two variables. Having at least five values of X is not necessary for plotting the regression line.

If You Want to Plot the Regression Line, After Having