STAT 100 Lecture Notes - Lecture 1: Categorical Variable, Dependent And Independent Variables, Observational Study

• School: Simon Fraser University
• Department: Statistics
• Course: STAT 100
• Professor: Perera Harsha

Document Summary

Supose we want to want the most popular tv show. Advertisers need accurate and precise answers to make business decisions. Anecdotes: short and amusing or interesting story about a real incident or person (not. Data: based off of facts, not stories (accurate) Individuals: objects (people or things) described by a data set. Variable: characteristic of an individual that could be measured or observed (height, weight) When we measure one or more variable for a set of individuals, we have a data set. Each round is variables (round 1,2,3,4, total, earnings) [vertical columns are variables] Everything has to be numerical to calculate in mathematic calculations. Observational study: measures a response variable without attempting to influence or control the response. 2 separate groups and do not enforce any treatment and just observe. Experiment: intentionally applies some treatments to subjects and measures a response variable. 2 groups, enforcing same treatment seeing how they both react.