The Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.


Math Forum » Discussions » sci.math.* » sci.stat.math

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: Help: Estimating r correlation
Replies: 2   Last Post: Jul 17, 1996 12:39 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
David Smith

Posts: 5
Registered: 12/11/04
Help: Estimating r correlation
Posted: Jul 17, 1996 12:04 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

Could someone help on this? Thanks.

I have a data set consisting of points (x,y,z) where x and y are
independent variables in an expt and z is the dependent variable. I want
to find the correlation between this data set and two models (equations)
each of which predicts a particular surface in the 3D space. Is there an
[easy] way of doing this?

I¹ve tried using various software packages but they have the annoying
habit of first varying the equation parameters so as to provide a least
squares fit. I just want to know the direct correlation between the
equations as given and the data set.

Also is it valid to compare the two correlations when one equation is
linear (x+y)/2 and the other is non-linear Sqrt[xy]?

Any help much appreciated.

David.
dsmith@psy.ucsd.edu





Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.