Stratify receivables balances and select a sample

Audit software can do pretty much anything you can imagine. So for example, looking at the list of invoice values on page 67 of the notes, because it requires no judgment, a program can read each invoice value - add it to the cumulative total - and identify the items to be selected based on the auditor setting the sampling interval (and maybe the random start too - though the computer program could random select a start in the range 1 - 1,249). So in a similar vein the computer could read the invoice values and sort them by size: 1-1000 101-500 501-1,000 1,001-1,500 >1,500 The population will then be stratified. A computer-generated list of a sample for testing might then include all items in the top stratum and a random selection from each of the others (either based on a number to be selected pre-determined by the auditor or some other algorithm/parameters set by the auditor).