STAT151 Chapter 1: What Is Statistics???

• School: University of Alberta
• Department: Statistics
• Course: STAT151
• Professor: Omar Rivasplata

Document Summary

A way of reasoning designed to understand the informaion that has been gathered (the data) on a certain subject of interest. Helps to understand and model the data to discover paterns and truths. Not all data has to be numerical (some data can be categories, for example the sex of a person. ) The five w"s to understand the data: who (whom we have collected data on, what (what has been measured/ collected about individuals, when, where, why. And also: how (how the data was collected; experiment/ survey/ ) Organizing data with tables show you a clear context of the data presented. Organizing data into a table will make your life much easier!! Categorical variable (also called qualitaive) are not numerical! (example of categorical variables are sex, race, ethnicity,) Quanitaive variable are numerical (for example income ($), height (cm), weight (kg),