Statistical Sciences 1024A/B Study Guide - Final Guide: Standard Deviation, Statistical Parameter, Simple Random Sample
31 May 2016
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Document Summary
Individuals are objects described by a set of data. E. g. students, dogs, cars, m&m candies, a company or an institution. A variables is any characteristic of an individual. A variable can take different values for different individuals. E. g. age, height, grades, colour, weight, pressure, temperature, gender, undergrad or grad, yes or no. The resting heart rate of an olympic runner. Every day"s high temperature. the number of leaves on a tree a person"s relationship status, religion, sexual orientation, marital status. There are two types of variables: categorical and quantitative. A categorical variable places an individual into one of several groups or categories. A quantitative variable takes numerical values for which arithmetic operations such as adding and averaging make sense. The values of a quantitative variable are usually recorded in a unit of measurement such as seconds or kilograms. What can be measured is the count or proportion of individuals in each category.
