PSY 2116 Lecture Notes - Lecture 1: Interquartile Range, Normal Distribution, Square Root
5 Mar 2016
School
Department
Course
Professor
Document Summary
Read existing research: generating theory and hypotheses, theories: hypothesized general principle explains known findings about a topic and from which new hypotheses can be made, hypotheses: prediction from a theory c. Falsification: act of disproving a theory or hypothesis: collecting data to test theory, purpose: 1. How to measure it: the what = variables c. Variable manipulated in experimental designs: dependent variable (outcome): affected by changes in iv. Levels of measurement: categorical variable: variables made up of categories. Clearly fall into one: continuous variable: variables give a score for each participant and the score can take on any value. Categorical variable types: binary (dichotomous): 2 categories e. g. status = dead/alive, nominal: more than 2 categories e. g. music preference, ordinal: same as nominal but categories have a logical order e. g. letter grades. Interval: equal intervals on variable represent equal differences in property being measured (difference btwn 5 and 7, same as 10 and 12: e. g.
