PSYC 1010 Lecture Notes - Lecture 3: Numerical Range, Central Tendency
6 Apr 2016
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Descriptive statistics organize, summarize and communicate numerical information (eg: % heads on coin tosses; grade distribution of this class) ; can i predict the grade distribution of the entire class form the grade distribution of students in the front two rows) Assigned homework: set a: + set b: Chapter 2 describing a single variable. Variable is some attribute for which there is some level of variation in scores {different variables have different scales that they can be on eg: gpa ranges: 0-100, number of siblings: most likely does not} Continuous variables values that vary by degree (values may be negative; values may have decimals) Ordinal variables the values indicate ranks (eg: first, second, third, etc. ) Value is a possible score on some measure of a variable (eg: a possible way to measures grades) Score is an actual data point on the measure of the variable. Types of variables involved in the gambling example:
