PSC 41 Study Guide - Midterm Guide: Snowball Sampling, Likert Scale, Null Hypothesis

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

Document Summary

Random sampling= most important for external validity, frequency claim=most important to have random s. Stratified random sampling-a multistage technique in which the researcher selects particular demographic categories on purpose and then randomly selects individuals within each of the categories. Systematic sampling- a probability sampling technique in which the researcher counts off members of a population to achieve a sample, using a randomly chosen interval (every nth person, where n is a randomly selected number) (a representative sampling method) Multistage sampling-two random samples are selected: a random sample of clusters, then a random sample of people within those clusters. Cluster sampling-a probability sampling technique in which clusters of participants within the population of interest are selected at random, followed by data collection from all individuals in each cluster. Forced choice format-eliminates don"t know/neutral options & forces person into an opinion, 2 options.