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nei:ian <br />nett: <br />Fags 5 of y <br />Precision formulas and Prototol: - -- - - <br />Rs/A-$/ 7 Fes$ <br />f <br />where: R= Range <br />1 <br />.= Rtplitate irlue I <br />F= nepli -- ate glue 4 <br />n= 2 (single cuplicate pair) <br />To graphically-epresent the dete cf numerous duplicate pairs on <br />control everts, the following ceIculetions must be perforrr.td <br />using statistic.1 -Wrnbers: <br />7 = X/n = granc mean <br />Ft = �R/n : mean range <br />Contrcl limits for everaces (x - bar chart): <br />UCL = X + 1.88 ;fc) <br />LCL X - 1.88 (R) <br />UWL = X + 2/3 (1.88 ) <br />LWL = X - 2/3 (1.88 <br />Control limits for ranges (R - bar chart): <br />UCL = 3.27 (R) <br />UWL = 'fit + 2/3 (3.27 <br />Relative Percent Difference: <br />• .. <br />where <br />