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You disproved your own point. In statistics, σ refers to an area under the normal distribution defined in terms of standard deviations (1σ = 1 standard deviati
by mendicantB 13y ago
You disproved your own point.
In statistics, σ refers to an area under the normal distribution defined in terms of standard deviations (1σ = 1 standard deviation).
In statistics and probability theory, the standard deviation (SD) (represented by the Greek letter sigma, σ) shows how much variation or dispersion from the average exists.
I think you're missing the difference.
- lutusp 13y agoIf the unit normal distribution is the distribution under discussion, there's no difference. In that case they become the same. Here's how a physicist computes a p-value given a sigma value: http://i.imgur.com/pcjr6cN.gif http://i.imgur.com/pcjr6cN.gif Note that the unit normal distribution is the underlying context.