sigma

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Σ σ Greek: σίγμα
Wikipedia article on sigma

Contents 1 English 1.1 Noun 1.1.1 Derived terms 1.1.2 Translations 2 Catalan 2.1 Noun 3 Czech 3.1 Noun 4 French 4.1 Noun 5 Spanish 5.1 Noun

[edit] English

[edit] Noun

sigma (plural sigmas)

1. The name for the eighteenth letter of the Classical and Modern Greek, the nineteenth letter of Old and Ancient.
2. (mathematics) the symbol (Σ) is used to indicate summation of a set or series.
3. (statistics) the symbol (σ) is used to indicate one standard deviation from the mean, particularly in a normal distribution.

[edit] Derived terms

• within one sigma - the range from the mean, plus or minus one standard deviation, usually covering 68% of the data points in a normal distribution

[edit] Translations

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[edit] Catalan

[edit] Noun

sigma f. (plural sigmes)

1. Sigma; the Greek letter Σ (lowercase σ or ς).

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[edit] Czech

[edit] Noun

sigma n.

1. sigma

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[edit] French

[edit] Noun

sigma m. inv.

1. sigma (Greek letter)

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[edit] Spanish

[edit] Noun

sigma f. (plural sigmas)

1. sigma; the Greek letter Σ, σ