1. mean = μ ± x | y (| z)

    μ:
    x:
    y:
    z:
    *
  2. MSWD = x, p(χ2) = y

    x:
    y:
  3. dispersion = ω + ωu /- ωl

    ω:
    ωu:
    ωl:

Ludwig, K. R. User's manual for Isoplot 3.00: a geochronological toolkit for Microsoft Excel. Berkeley Geochronology Center Special Pulication, 2003.