The Calculate Sampling action calls the CalculateSampleSize Business Component method, which calculates or re-calculates the sampling size (see Sampling) for the selected Disposition Test (if selected on the Disposition Test level), or for the Disposition Tests subordinate to the selected Disposition or Disposition Line (if selected on the Disposition or Disposition Line level) but only if their status is "New." The calculation is based on the Sampling Procedure defined (on the Sampling tab).