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Homework Help: Meaning of fully correlated in statistics

  1. Jun 26, 2010 #1
    I was given the following exercise in Statistical Data Analysis:
    The method of least squares is often used for straight lines fits
    y(x)=mx + c
    to data [tex] (x_i,y_i)[/tex] Assume all y values have the same (uncorrelated) statistical uncertainty [tex]\sigma[/tex] and that they share a common (fully correlated) systematic uncertainty s. How does the covariance matrix look like?

    My question is, what do they mean by "fully correlated", and how do I work the "shared common systematic uncertainty s.

    Thank you!
  2. jcsd
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