GGR270H1 Lecture Notes - Kelvin, Collectively Exhaustive Events, Univariate
15 Oct 2013
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Characteristic of the population that changes or varies overtime. Looking at census tracts: ex. looking at two variables, looking at education and income how those connect and vary in different locations. Observe and measure variables before you start testing them. Two key categories: quantitative numerical e. g. number of students who. , discrete (1,2,3,4 ) or conitious (1. 5, 2. 5,6. 76, 3. 89, qualitative non numerical e. g. male/female, plant species. You can count the number of males or females in class. Results from measuring variables set of measurements. Different categories univariate, bivariate , multivariate. Scale defines amount of information a variable contains and what statistical techniques can be used: exam: give a statistical problem and ask what statistical tests should be used. These two questions will allow you narrow down which test you can use. Four scales: nominal, ordinal, interval, ratio, ( ^ those are lowest to highest) lowest has the least amount of information.
