NMDC Posted May 11, 2016 Share Posted May 11, 2016 dear all, Please can anyone explain why the statistical error result from the statistic report is different when i calculate it manually? e.g this is the result from rockworks report: Mean .................................... 2.68 Standard Deviation ...................... 2.91 Standard Deviation Error ................ 0.75 when i calculated manually using the formula SE = StandDev./Sqrt of mean (Where mean is 2.68) = 1.777565 meanwhile in both instances the mean and standard deviation were the same. Thanks. Link to comment Share on other sites More sharing options...
NMDC Posted May 12, 2016 Author Share Posted May 12, 2016 thanks tom i found the solution to the above rockworks considers n as population size. Link to comment Share on other sites More sharing options...
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