PSYC 2017 Study Guide - Categorical Variable, Type I And Type Ii Errors, Frequency Distribution
Document Summary
Chapter 5: variable: anything that can vary. Independent variable has to vary: dependent: measure; also has to vary, different ways to categorize these variables, discrete: categorical (male or female, continuous: varies (age) Categorical variable for mutual exclusive, but not ordered, categories. Example: names of people in this class. What would be the most frequent name? just talking about how many are there in each category. Examples: types of candy: ordinal: no the order. Order matters but not the difference between values. Example: 3 amy"s running the race, one of the catherines finished first, amy finished 2nd, and george finished 3rd. It doesn"t make sense to talk about the distance between each name is similar. That"s why we order them, instead of interval. Example: first grade, second grade, third grade : interval no the order and distant. Rank order, but also the distance between the two is meaningful. Similar to ratio, except that interval doesn"t have a true zero.
