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Chrissy Wissy[_2_] Chrissy Wissy[_2_] is offline
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Default Correlation matrix

Hi,
I should have made myself clearer. The correlations are based on 16
measurements for each variable. I want to plot every correlation coefficient
(for all variable combinations) as an intensity contour. It is quite hard to
find an application that can plot a correlation matrix in its normal form.
The only way with Excel in its bare form as I see it is to convert the matrix
into a very long list of x (variable), y (variable), z (correlation
coefficient) values!

"Bernie Deitrick" wrote:

Chrissy,

You cannot have a meaningful correlation value for less than three sets of data points. Are there
more points that go into it?

HTH,
Bernie
MS Excel MVP


"Chrissy Wissy" wrote in message
...
Hi
this is a point I have also raised in the graphs section. I was wondering if
there was an excel addin that allows a coorelation matrix to be ploteed as a
contour plot. What I want to essentially view is a contour plot showing the
"intensity" (r
= 0 - 1) of the correlations between each variable for all combinations. This
is primarily because I have complex data and such a realisation would greatly
enhance my interpretation. For example, the "diagonal" in the contour plot
would show a maximum intensity of 1 for each combination of x1/x1, x2/x2,
etc. It would be quite straightforward to place the mirror image of the
matrix data above the triangular matrix should that be required by the
application.