Statistical Sciences 1024A/B Chapter Notes - Chapter 1: Exploratory Data Analysis, Pie Chart
20 Apr 2017
School
Department
Professor
Document Summary
An individual is a person or object on which an observation is made. They are sometimes known as experimental units or sampling units. A variable is an characteristic of the individual. The variable can take on different values for different individuals. The resting heart rate of an olympic runner. Quantitative: something that can be counted or measured than added, subtracted, averaged, etc. , across individuals in the population, example: how tall you are, your age, number of credit cards you own. Categorical: something that falls into one of the several categories. What can be counted is the count or proportion of individuals in each category: example: your blood type (a, b, ab, o), your hair colour, whether you paid income tax last year or not. 1. 2 categorical variables: pie charts and bar graphs. Exploratory data analysis is the examination of data in order to describe their main features.
