1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Least Squares

  1. Jan 29, 2012 #1

    What are the error bars on the least squares fit line?

    recall the variables are:
    x ; y ; x^2 ; xy ; y^2 ; yi=mx+c ; d =(y-yi) ; d^2

    is it d?

  2. jcsd
  3. Jan 29, 2012 #2
    never mind... Its solved
  4. Jan 29, 2012 #3
    the answer is: [itex]\sigma_y^2 = \frac{1}{N-2} \times \displaystyle \sum_i^N (y_i - A - Bx_i)^2[/itex]
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook