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Sigma
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Meaning
Noun
●
In Greek letter names:
The
eighteenth
letter
of the Classical and Modern Greek
alphabets
, the
twentieth
letter
of Old and Ancient.
●
In Mathematics & Greek letter names:
The
symbol
Σ, used to
indicate
summation
of a set or series.
●
In Statistics & Greek letter names:
The
symbol
σ, used to
indicate
one
standard deviation
from the
mean
,
particularly
in a
normal
distribution.
●
Clipping of
sigma
male.
Sourced from
Wiktionary
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