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RANDOM ERROR QUANTITYName:
with Xmed and Ymed denoting the medians of samples X and Y, respectively. The ASTM E 2489 - 06 standard gives the following rationale for the random error quantity.
<SUBSET/EXCEPT/FOR qualification> where <x> is the variable containing the measurements for sample X; <y> is the variable containing the measurements for sample Y; <yout> is a variable where the computed random error quantities are saved; and where the <SUBSET/EXCEPT/FOR qualification> is optional. Note that <x> and <y> are paired so they must be of the same length.
skip 25 read e2489b.dat lab y1 y2 . let ranerr = random error quantity y1 y2 set write decimals 2 print lab ranerrThe following output is generated ------------------------------ LAB RANERR ------------------------------ 1.00 -0.15 2.00 -0.40 3.00 0.51 4.00 -0.51 5.00 0.23 6.00 0.18 7.00 -0.51 8.00 0.37 9.00 0.31 10.00 -0.14 11.00 -0.18 12.00 1.18 13.00 -0.29 14.00 -0.34 15.00 -0.08 16.00 0.16 17.00 -0.06 18.00 0.10 19.00 -0.03 20.00 0.42 21.00 -0.19 22.00 0.04 23.00 -0.20 24.00 -0.54 25.00 -0.12 26.00 -0.38 27.00 -0.50 28.00 -0.04 29.00 -0.22 30.00 -0.28
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Date created: 12/31/2014 |