Psychology 3800F/G Chapter Notes - Chapter 1: Minitab, Squared Deviations From The Mean, Central Limit Theorem

• School: Western University
• Department: Psychology
• Course: Psychology 3800F/G
• Professor: Ryan Stevenson

Document Summary

Sample subset of the population: random sample everyone in the population has an equal chance of being selected. Finite population definite number of individuals i. e. population of london right now. Infinite population no limit to the number of individuals i. e. population of london in past, present, and future: theoretical population an equation. Stats are based on normal distributions of theoretical populations. 2= variance some samples are not normal but are still random samples results are similar to those obtained from normal populations: use monte carlo techniques to justify this. Stratified random sample identify parameters believed to be important in the population and obtain samples randomly from strata reflecting those characteristics: done so the sample can be representative, how sociologists form samples. Psychologists are interested on differences in behaviour based on a treatment or how two variables relate to each other: are(cid:374)"t too (cid:272)o(cid:374)(cid:272)er(cid:374)ed a(cid:271)out the sa(cid:373)ple (cid:271)ei(cid:374)g represe(cid:374)tati(cid:448)e of a parti(cid:272)ular populatio(cid:374)