Statmerge.m

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Merges means and standard deviations of the mean for multiple sample sets into a total mean and total standard deviation of the mean. Syntax:

          [total_mean,total_stdm]=statmerge(means,stdms,npoints)

Parameters:

     means - a vector of mean values for each sample set
     stdms - a vector of standard deviations of the mean
             for each sample set
   npoints - a vector specifying the number of samples in
             each sample set