Assume I have three sets of x,y data. I fit each by least-squares to a straight
line. I determine that the three fitted lines are homogeneous and
indistinguishable at a certain significance level. I want to express the slope
(of the three) as a single point estimate and as a confidence interval. What is
the formula for doing this?
Please reply to this newsgroup and to the writer at <[EMAIL PROTECTED]>.
Thank you for your help.
stan alekman
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