PSC 41 Study Guide - Quiz Guide: Simple Random Sample, Quota Sampling, Stratified Sampling

• School: UC-Davis
• Department: Psychology
• Course: PSC 41
• Professor: Cross, Victoria

Document Summary

Ex: older people, have less cognitive flexibility. Step 1: identify all possible people described. Ex: researcher interested in attitudes of uc davis students. Recruits students from her study by using department"s sona system. Her population of interest is uc davis students . Actual population are those on the sona system. Randomly select people from the whole population. Everyone has same chance of being selected. Everyone in each subgroup is equally likely to be selected. Researcher sets a quota, independent of population characteristics. Randomly selecting people between subgroups (clusters) of people. Randomly select from those mini clusters. Ex: you want a representative national sample. Randomly select zip codes from each state. Within each zip code, randomly select streets. Select some starting point and selecting participants based on a fixed interval. Sample is recruited from a population that is conveniently available to researchers. Internal: extent to which the predictor (not other factors) account for an observed effect.