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σ (EN)
črka, simbol

črka “σ”

σ, sigma
  1. osemnajsta črka grške abecede, mala sigma
    In Greek language classes, students learn that σ is the lowercase form of sigma.

simbol “σ”

σ
  1. (matematika) simbol, ki predstavlja standardni odklon v statistiki
    The statistician calculated σ to understand how the data varied from the mean.
  2. (fizika) simbol, ki predstavlja električno prevodnost
    The electrical conductivity σ increases with temperature in this material.
  3. (fizika) simbol, ki predstavlja prečni prerez
    The scattering cross-section σ is crucial in nuclear physics experiments.