PSYC 316 Lecture Notes - Lecture 1: Confounding, Skewness, Box Plot
31 Mar 2016
School
Department
Course
Professor
Document Summary
Independent: that you manipulate or categorize, dependent, that you measure; it depends on the independent variable, confounding, that you try to control or randomize away, can become a confounding variable (bad)! Ordered, constant scale, but no natural zero (zero 0). Differences make sense, but ratios do not (e. g. , 30 -20 =20 -10 , but 20 /10 is not twice as hot!). (e. g. , temperature (c, f), iq: ratio: i. Ordered, constant scale, natural zero (e. g. , money value, height, weight, age, length, time, kelvin). Scales of measurement: a way for us to assign a value to something according to a set of explicit rules, all scales of measurement are characterized by three properties, order: i. Lesson 1: basic statistics review 1: difference: i. Does subtracting 2 numbers represent some meaningful value: ratio: i. Values of nominal variables have no natural ordering, whereas values of ordinal variables do.
