CRIM 320 Lecture 1: Introduction, Data Measurement, and Univariate Statistics
16 Apr 2018
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Crim320 lecture 1: introduction, data measurement, and univariate statistics. Right-wing criticisms of accuracy of voting polls. Sampling and error issues they do not understand. Eg. sports, political polling, market analysis, personal finance, weather forecasts. Unproven general statement concerning the problem under investigation. Criminal activity is positively associated with unemployment . Theoretically and empirically false as a general statement. Can test a model, law, or theory locally . Can have value between any 2 other values. Everything can be assigned to a category. Eg. commercial land use, residential land use, mixed land use. 2 isn"t necessarily twice as good as 1. Do not know how much greater each category is: ordinal, interval. Magnitude difference between 2 values can be determined. Placement of origin or zero is arbitrary: ratio. Allows for diff between obs to be measured. Eg. how many obs in a category. Rank you in relation to everyone else. When the iv causes the other dv to change.
