Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

Here's a simple way to show how a researcher can remove bias when conducting simple random sampling. Let's say there are 100 bingo balls in a bowl, from which the researcher must choose 10.

The selection probability for a unit in stratum h equals n h /N h for stratified simple random sampling. PROC SURVEYSELECT uses Floyd's ordered hash table algorithm for simple random sampling. This ...