A tax auditor has a pile of 191 tax returns of which he would like to select 17 for a special audit. Describe a method for selecting the sample which involves systematic sampling. Solution The tax auditor could number the returns 1 through 191. He could then use a random number table to select a number at random between 1 and 11. Starting with that number, he could list every 11th number until he has 17 numbers. He could then select the tax returns corresponding to the numbers listed..