CEFR C1

sigma

noun

Meaning

A statistical measure of the amount and type of variation or dispersion of a set of data values. It is often represented by the Greek letter 'σ' or 'Σ'.

Examples

The sigma of the test scores was surprisingly low, indicating most students performed similarly.
Manufacturers use sigma to control the quality of their products, aiming for minimal variation.

Synonyms: variation, dispersion, standard deviation

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sigma (C1)

noun

Pronunciation: /ˈsɪɡmə/

Definition

A statistical measure of the amount and type of variation or dispersion of a set of data values. It is often represented by the Greek letter 'σ' or 'Σ'.

Examples

The sigma of the test scores was surprisingly low, indicating most students performed similarly.
Manufacturers use sigma to control the quality of their products, aiming for minimal variation.

How to Use sigma

sigma of (prepositional phrase): Indicates what data or set the variation is being measured from. — "We need to calculate the sigma of the customer feedback data."
process sigma (collocation): The level of variation or defect rate within a specific business or manufacturing process. — "Achieving a high process sigma is a key goal for quality control."

Synonyms of sigma

Words with a similar meaning to sigma:

Antonyms of sigma

Words with the opposite meaning to sigma:

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