1. age = x ± y (| z)

    x:
    y: .
    z:
  2. intercept = x ± y (| z)

    x:
    y: .
    z:
  3. MSWD = x, p(χ2) = y

    x:
    y:
  4. dispersion = x ± y

    x:
    y: .

Nicolaysen, L. Graphic interpretation of discordant age measurements on metamorphic rocks, 1961. Annals of the New York Academy of Sciences, 91(1):198–206.

York, D., Evensen, N.M., Martinez, M.L. and De Basabe Delgado, J., 2004. Unified equations for the slope, intercept, and standard errors of the best straight line. American Journal of Physics, 72(3), pp.367-375.