Σ
シ
グ
マ
Meanings
1
sigma
The 18th letter of the Greek alphabet; used in mathematics, science, and engineering.
In mathematics, Σ is the symbol for summation.
The σ in this formula stands for standard deviation.
Usage patterns
- Σで〈数〉の合計を表すto represent the sum of a set of numbers using sigma (Σ)
We use sigma to represent the sum of the numbers from 1 to 10.