STAT 100 Lecture 5: Lecture 5
21 Apr 2016
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STAT 100 Full Course Notes
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Some measurements are obviously enumerated by the instrument. Creates a variable in a data set (text says this is numerical, but not always) I have a friend who can give the name of all star trek episodes and their opening line. Measurement: the process of assigning a number to a characteristic or property of an individual. So, would like the measurements you take to inform the problem at hand. Example: citizens for public justice released a report bearing the brunt: how the 2008-2009 recession created poverty. Measurement is valid if it a relevant representation of the property under study. Example: number of alcohol related deaths in bc since the proliferation of private liquor stores. Example: using number of deaths to measure severity of a hurricane/typhoon. Example: measuring the amount of snow to describe the severity of the winter. Point is that variables need to be clearly defined and consistent. Others are computed from other measurements (miles/gallon, body mass index)
