Stats Test Uno

Simple random sample

A sample of n subjects is selected that every possible sample of the same size n has the chance of being chosen

Random sample

All members of population have the same chance of being selected *computer generates 500 random names*

Nominal

Categories only *yes, no, undecided*

Ordinal

Categories with some order *courses grades A,B,C,D,F*

Multistage

Combining sampling methods

Ratio

Differences and a natural zero point *distance to campus from home*

Interval

Differences but no natural zero point *years 1776, 2003, 2019*

Stratified

Divide population into groups *freshman, senior*

Cluster

Divide population into groups, randomly select some groups *students selected from communications, business*

Probability sample

Each member has a known chance but not equal chance

Systematic

Select some starting point and then select every kth element in the population *every 49th student from a group of 496 students*

Convenience

Use data that is easy to get