COMM 291 Lecture Notes - Lecture 6: Categorical Variable, Count Data, Confounding
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COMM 291 Full Course Notes
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Commerce 291 lecture notes 2019 jonathan berkowitz. Not to be copied, used, or revised without explicit written permission from the copyright owner. Origin of the word: the word data" is plural (the singular is datum"); it comes from the. Latin meaning to give"; so in the current sense, data are the information given to us to analyze and interpret. To be grammatically correct, say data are not data is . Terminology: variable a characteristic recorded about an individual, data specific values of a variable, observations another word for data (for example: the height of students in a class is a variable. We begin by thinking about types of data (or variables). Data (or variables) are either categorical or quantitative (measurement). The first principle of data analysis is to understand which type of data you have. But not only is this the first principle, it is undoubtedly the most important one.
