STATS 250 Lecture Notes - Lecture 2: Ordinal Data, Interquartile Range, Unimodality
49
STATS 250 Full Course Notes
Verified Note
49 documents
Document Summary
Simple summaries of data can tell an interesting story and are easier to digest than long lists. Raw data correspond to numbers and category labels that have been collected or measured but have not yet been processed in any way. A variable is a characteristic that differs from one individual to the next. Sample data are collected from a subset of a larger population. Population data are collected when all individuals in a population are measured. A statistic is a summary measure of sample data. A parameter is a summary measure of population data. We have 2 variables in our data set. We want to distinguish between the different types of variables - different types of variables provide different kinds of information and the type will guide what kinds of summaries (graphs/numerical) are appropriate. No (could code, but it would be arbitrary: 0 and 1, or could use any two values like 1 and 203)
