Sample Format -- Uncertainty Calculation using Sidereal Month Data , 2002


Interval minus mean Residual Square of residual
28 - 27.38 0.62 0.3844
27 - 27.38 -0.38 0.1444
28 - 27.38 0.62 0.3844
27 - 27.38 -0.38 0.1444
27 - 27.38 -0.38 0.1444
27 - 27.38 -0.38 0.1444
28 - 27.38 0.62 0.3844
27 - 27.38 -0.38 0.1444
28 - 27.38 0.62 0.3844
27 - 27.38 -0.38 0.1444
27 - 27.38 -0.38 0.1444
28 - 27.38 0.62 0.3844
27 - 27.38 -0.38 0.1444
Sum of squares 3.0772


N (number of intervals) = 13


N(N-1) = 13 X 12 = 156


Uncertainty = square root of (3.0772/156) = 0.1404, or to two decimals 0.14


"Error" in units of uncertainty = (27.38 - 27.32)/0.14 = 0.06/0.14 = 0.43