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Normalisation
Published boy wonder

The Cluster manual says that the data are normalised before making the trees. What does that mean?
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Can't enter minusses
Published George

Hello,
If I type '---' (without the quotes) in a spreadsheet cell, it shows '0'. Why is this? Is it a bug perhaps?
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Correlation matrix???
Published George

Could anyone tell me what the difference is between a covariance matrix and a correlation matrix? The online manual is not very helpful.
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