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## What does Greek sigma mean?

The Greek letter σ (sigma) is used in statistics to represent **the standard deviation of a population**.

## How do you pronounce Σ?

Sigma (σ, ς):There are two forms for the letter Sigma. **When written at the end of a word, it is written like this**: ς. If it occurs anywhere else, it is written like this: σ. Upsilon (υ):In the above table, we suggest that you pronounce this letter like “u” in “put”.

## What is Epsilon stats?

ε: “**Error term**” in regression/statistics; more generally used to denote an arbitrarily small, positive number. ∈ (Variant Epsilon) This version of epsilon is used in set theory to mean “belongs to” or “is in the set of”: x ∈ X; similarly used to indicate the range of a parameter: x ∈ [0, 1].

## What are the 24 Greek letters?

The uppercase and lowercase forms of the twenty-four letters are: **Α α, Β β, Γ γ, Δ δ, Ε ε, Ζ ζ, Η η, Θ θ, Ι ι, Κ κ, Λ λ, Μ μ**, Ν ν, Ξ ξ, Ο ο, Π π, Ρ ρ, Σ σ/ς, Τ τ, Υ υ, Φ φ, Χ χ, Ψ ψ, and Ω ω.