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BGonline.org Forums
Correction and XG mysteries
Posted By: Chris Yep In Response To: Correction and XG mysteries (Maik Stiebler)
Date: Wednesday, 1 June 2016, at 10:16 p.m.
Until recently "Percentage of wrong pass needed to make the double decision right" was calculated by the following formula:
"Percentage of wrong pass needed to make the double decision right" = Loss / (Gain + 2 * Loss).
In your example, Gain = 0.717 and Loss = 0.351. So Loss / (Gain + 2 * Loss) = 0.351 / (0.717 + 2 * 0.351) = 0.351 / 1.419 = 24.7%.
The bug was corrected sometime between XG 2.19.208 (released February 2015) and XG 2.19.211. The version on my computer (2.19.211) correctly calculates 0.351 / (0.717 + 0.351) = 32.9%.
In addition to Neil Robins' link, see additional discussion in this July 2015 thread.
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