Re: ill-conditioned matrix

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#1220

From: Anthony Downing
Date: Wed, 30 Jun 1993 12:38

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This business of transforming a matrix of phi coefficients arising from
a set of dichotomously measured variables into a polyc(h?)oric matrix
would seem to be very important, but I for one don't know enough
about it.  Could someone explain further and give references?
Especially welcome would be references fairly readily intelligible to
psychologists and others who are interested in statistics but are not
professional statisticians!

Tony Downing
Dept. of Psychology
University of Newcastle upon Tyne
England.                                  A.C.Downing @ newcastle.ac.uk

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Date:         Wed, 30 Jun 1993 13:38:57 BST
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From:         Anthony Downing <A.C.Downing@NEWCASTLE.AC.UK>
Subject:      Re: ill-conditioned matrix
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