Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Graphical Analysis removing y-intercept

  1. Sep 4, 2012 #1
    Hello, I am trying to remove the y-intercept from my linear fit with this software since my equation is y=mx and NOT y=mx+b, so I need to figure out how to remove the y-intercept so my data will have a smaller % error, because the intercept makes the slope larger than it should be. Any ideas how to do this? (yes I checked online, tutorial, help menu, etc)!!
  2. jcsd
  3. Sep 4, 2012 #2


    Staff: Mentor

    what software?
  4. Sep 4, 2012 #3


    User Avatar
    Science Advisor

    Do an analysis that gives a parameter estimate for the intercept for a simple linear regression of y against x, and then subtract that value from all the y-values and re-do the regression with these new ones.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook