sigma

/ˈsɪɡmə/

nounsig · ma

SIGn your MAthematics: **SIG** + **MA** = **sigma**.

Yes, it's sigma. Remember it’s **sig** (like “sig”) + **ma** (like “muh”)—no **n** in the spelling.

Definitions

  1. nounThe 18th letter of the Greek alphabet (Σ, σ, ς).
  2. nounA symbol used in math and science, especially for summation (∑) and for standard deviation in statistics (σ).

Examples

  • “In algebra, the symbol ∑ (sigma) tells you to add a series of numbers.”
  • “The report listed the mean and sigma to describe how spread out the data was.”
  • “She wrote sigma (σ) carefully so it wouldn’t be confused with the number 5.”

Synonyms

Greek lettersummation symbolstandard deviation symbolstatistical symbol

Translations

ES sigmaPT sigmaFR sigma

Common misspellings

sigemasigmmasigmuhsigamasigmnasigamsihgma

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