SDS251R Chapter Notes - Chapter 15: Multivariate Analysis, Central Tendency
25 Mar 2016
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Document Summary
Quantitative analysis- the numerical representation and manipulation of observations for the purpose of describing and explaining the phenomena that those observations reflect. Codebook- the document used in processing and analysis that tells the location of different data items in a data file. Data cleaning- the process of detecting and correcting coding errors in a machine-readable dataset. Univariate analysis- the analysis of a single variable, for purposes of description. Frequency distributions, averages, and measures of dispersion would be examples of univariate analysis, as distinguished from bivariate and multivariate analysis. Frequency distribution- a description of various number of times that various attributes of a variable are observed in a sample. Average- an ambiguous term, generally suggesting typical or normal- a central tendency. Mean- an average computed by summing the values of several observations and dividing by the number of observations. Mode- an average representation the most frequently observed value or attribute.
