PSYC 2001 Lecture Notes - Lecture 7: Convergent Evolution, Normal Distribution, Damselfly

• School: Carleton University
• Department: Psychology
• Course: PSYC 2001
• Professor: Jordan Schoenherr

Document Summary

Population: set of individuals of interest to researcher. Set of entities concerning which statistical inferences are to be drawn: living things, humans, ottawa residents, students registered in psyc 2001 a & t at carleton university. In psychology, typically try to obtain samples that represent general population, also frequently consider special populations: e. g. , children, dangerous offenders, dyslexics, developmentally delayed. For multiple reasons, it"s not typically possible to test entire populations. Sampling: variety of ways of selecting individuals to participate in research study. Representative sample and bias: *diagrams in lecture slide* Representative sample: critical to note: bias is relative to the question under consideration. Unrepresentative (biased) sample: your population must be selected based on factors/ traits/etc. that you feel are relevant to population you want to generalize to. New york city police department has adopted a stop-and-frisk program to reduce crime. Probability sampling: population is known & each individual has specifiable probability of being selected.