front 1 census | back 1 attempt to every individual in the whole pop |
front 2 voluntary response | back 2 poeple who choose themselves to be part of the group of interest by responding to general appeal |
front 3 convinience sample | back 3 choose the individuals easiest to reach |
front 4 simple random sample (SRS) | back 4 every inidividual in the population has an ewually likely chance to be chosen |
front 5 stratified random sample | back 5 divide the population into groups of similar indivduals, called strata and then choose a SRS of each group and combine |
front 6 cluster sample | back 6 selecting locartions at random and then sampling everyone in that location |
front 7 multi stage cluster sample | back 7 selecting locartions at random and then selecting portions of that location, and then sample everyone in that location |
front 8 multi stage sample | back 8 take a random sample at multiple levels to reach your final sample all stages involve random sampling states- counties- cities- neighborhoods |
front 9 systematic random | back 9 sample has a random starting place and then follows a pattern |