Lecture 3 Describing Data Notes- MT.docx - Notes Your Name...

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NotesYour Name: Use this general structure (or one of your choosing) to makes notes, ask questions, raise points you would like to discuss in class and summarize this week’s materials in your own words (for your reference later). Michael TranYour NotesDescribing DataThe AnalysisTwo Ways to Think of DescribingDescribing the dataset itselfDescribing the data elements, it containsDescribing the DatasetWhen describing the dataset, you are doing things to understand the information that it has.# of observations/cases?The variables in your dataset?The types and values of each variable?Do you have “holes” in the data?Source/type of data?Unique identifier?Describing the DataTo make sense out of data by constructing appropriate summary measures, graphs and tablesBasic description of data starts with a single variable at a timeThe proper methods depend on the types of variables you haveWhen do you Describe Data?Exploratory Data Analysis (EDA)oTo get a feel for the dataLay of the Land Presentation or Opening of Your Storyo

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