Normal vs RVsigma - It shows here that RVsigma can be = to the standard deviation of the Normal Curve as I have stated that it is! [br][br][br]Here I have shown that the Normal Curve and RV Sigma exactly overlay each other as the two Graphs show at top.[br][br]1) Data on the Right shows data from the Triangle, I^2 , Normal, Sigma Probabilities[br][br]2) Data consist of ' t ' - test and General Statistics[br][br]3) Study Ledgers in each graph[br][br]4) Look at Data Carefully