Slide 13 of 65
Notes:
For computerized files, stratification sampling can be executed by writing a sample program. For instance, suppose our invoices were on a computer file that had a volume of approximately 250,000 invoices. Recall that our sample size needs to include 25 invoices. We will simply write a program that prints every 10,000th record (=250,000/25). For manual files and documents, we could execute a similar scheme.
