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Note that variance is thus measured in deviations from the mean, squared. This means variance is not a very 'natural' or human measure to us. To scale back to the order of magnitude that the observations were made in, one scales back to the standard deviation, which is the square root of σ2, so σ.

Variance and variants relate in the sense that we can count variants as data points. For instance, there is a certain spread on average in the amount of variants per document or witness. What does it mean if we find a witness that is extremely deviant in that amount? But we can also count variants into categories, at which point they may become genetically relevant, acting in similar way as DNA mutations cause variance and are tell tale of genetic provenance.

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