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quanttrader714 wrote:
> Franco, what you said about variance is absolutely correct but first,
> I don't believe there is a "true" value.
and I too ..
> And second, larger is not always better because large sample sizes
> can make small differences that are not important statistically
> significant. So interpretation can be critical.
yes, but if you drop data you lose information. They may not add a lot
but reducing them surely doesn't improve your position.
But if you add non pertinent or non omogenous data then you may need
some interpretation.
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