- Voluntary response sample - the sample chooses itself by responding to a general appeal. Write-in or call-in opinion polls are examples of voluntary response samples. Voluntary response samples are often biased.
- Convenience sampling - a selection of whichever individuals are easiest to reach is called convenience sampling. Convenience samples are often biased.
- Bias - the design of a statistical study is biased if it systematically favors a certain outcome
- Simple Random Samples (SRS) - a simple random sample (SRS) of size consists of n individuals from the population chosen in such a way that every set of n individuals has an equal chance to be the sample actually selected
For the Class...
I will be providing class notes, sample problems and homework here.