CMN 2101 Chapter Notes - Chapter 14: Standard Deviation, Descriptive Statistics, Statistical Inference
5 Mar 2016
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Statisticians use mathematical methods to analyze, summarize, and interpret numerical data that have been collected. The choice of the statistical method of analysis (choosing between the variety of methods available) depends on the data that have to be analyzed. Nominal level matters such as sex, nationality, and marital status. o! Typical examples of data on this level are demographic o! For each analyzed object, the only thing we are able to determine is which one of a few categories it belongs. o! We can code these categories with numbers, but they would be used only as signs without any mathematical meaning. 0 for females and 1 for males o! From the point of view of statistics, nominal data are the simplest kind of data because of the limited number of operations that can be applied to them. to some criterion. o! Data belong to this level when they can be ordered according o!
