PSYC 217 Lecture Notes - Lecture 10: Random Assignment, Royal Institute Of Technology, Psych

• School: UBC
• Department: Psychology
• Course: PSYC 217
• Professor: Linda Scratchley

Document Summary

Questionnaires, phone, or in-person interviews to ask ppl about. Population: the entire group of ppl the study"s research question is. Representative sample is such that the results generalize to the. Random sample is such that each member of the population has equal. Obtaining a representative sample that is not random is possible, but. Relies on representative samples (cid:1) (cid:1) themselves (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) about (cid:1) (cid:1) (cid:1) (cid:1) population (cid:1) (cid:1) probability of being selected into the sample (cid:1) (cid:1) difficult (cid:1) (cid:1) (cid:1) (cid:1) an experimental study (cid:1) E. g. draw numbers out of hat, random number generator. A study that uses random sampling but not random assignment = not. A study that doesn"t use random sampling but does randomly assign. Preserves info on important proportions in the population. When the list of everyone in the population is not available. Stages first sample larger units, then sample from those.