Re: Advantage Pac Curve Fitting Message #3 Posted by mbrethen on 21 June 2011, 10:30 p.m., in response to message #2 by Namir
Well, suppose you measure the gross weight of a UPS truck (y) with various numbers of packages (x) in it, and you get the regression equation ˆy = 2.17x+2463. The slope, 2.17, is the average weight per package, and the y intercept, 2463, is the weight of the empty truck. The value of ˆy when x is 0 isn't always meaningful, but in this case, it has physical meaning!
Edited: 21 June 2011, 10:36 p.m.
