STA 220 Lecture Notes - Lecture 1: Ordinal Data, International Standard Book Number
Document Summary
Sta 220 - lecture 1 and 2 - chapter 1: stats starts here. Data - any collection of numbers, characters, images, or other items that provide information about something. Can be numbers, record labels, or other labels. Not all data represented by numbers are numerical data. Data vary - surveys and experiments produce a variety of outcomes. A way of reasoning and a collection of tools and methods designed to help understand data and how data vary. All measurements are imperfect - there is variation that we cannot see. We are able to work with variability in the world around us with statistics. Think - know where you"re headed and why. Show - mechanics and calculating statistics and graphical displays. We need the w"s to provide us with the context for the data. The answers to who , what , and why are essential. Tells the individual cases about which (and whom) we have collected data.
