[StayOnTop]

Hi, today in lab we recorded increasing mass in a test tube, and checked its volume. Then, we had to graph the points, and have a best fit line with equation on Excel. I was posed a question, and I'm having trouble figuring it out. If there was zero error in the experiment, how many points would be on the line? Would all the points be on the line? Or would there always be some points that do not go through the line even if the error was zero?

I say that all the points would lie on the line. Any help would be very appreciated.

[citron2k1]

There will always be some error or uncertainty in any experiment that you do, but to answer your question - the line basically tells you how proportionate the x and y axis are. The closer the points are to the line the more proportional they are to each other. In your case of Mass vs Volume, maybe as the mass goes up the volume you goes up or vice versa.

Hope that helps some.

[StayOnTop]

I'm guessing it's from a theoretical standpoint, if there was zero error, would all the points lie on the line. Yes, right?

[Borek]

Yes.