STAT 1000 Lecture Notes - Lecture 1: Birth Weight, Blood Sugar, Frequency Distribution

• School: University of Manitoba
• Department: Statistics
• Course: STAT 1000
• Professor: Susan Miller

Document Summary

Stat 1000 lecture 1 examining distributions. Statistics is a branch of science which deals with collecting, organizing, analyzing, interpreting, summarizing and presenting data. Unit/individual: an object on which we take a measurement or observation. (e. g. people, places, things) Population: the collection of all individuals or units under consideration. Sample: a subset of the population from which we obtain data. 300 voters to estimate how many are planning to vote for sam katz: from the population of all elm trees in winnipeg we take a sample of 200 trees to test for dutch elm disease. At the heart of statistics is the notion that it is impractical observe every value of our population, so we rely on sample data. We need to take care as statisticians to ensure our sample data is representative of our population and does not over or under cover any subpopulations. Variable: any characteristic or property of an individual.