What is the standardized variable value for the cusum charts from Hawkins?

• A. \(v_i=\frac{\sqrt{|y_i|}-0.822}{0.349}\)
• B. \(v_i=\frac{\sqrt{|y_i|}-0.822}{0.500}\)
• C. \(v_i=\frac{3\sqrt{|y_i|}-0.822}{0.349}\)
• D. \(v_i=\frac{2\sqrt{|y_i|}-0.822}{0.349}\)