Lecture 4 2011 snow affected

Lecture 4 2011 snow affected - I. Introduction (Chapter 1)...

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1 I. Introduction (Chapter 1) A. Statistics – what does the word mean? B. Two Kinds of Statistics C. Data Collection 1. Census 2 Non random sampling 2. Non-random sampling 3. Statistical Sampling 4. Experiments II. Descriptive Statistics 1. Variables and Data a. Variable : b. Data : A. Organizing Data (Chapter 2) c. Types of Variables and Data d. Data Measurement Levels 2. Organizing Data a. Arrays b. Grouped Data Tables Views on Underage Drinking by Age Groups Jul y, 2007 Gallup Poll 18 to 34 year olds 35 to 54 year olds 55 years and older All Americans %%%% Lowering the drinking age to 18 in all states Favor 40 17 15 22 Oppose 59 82 84 77 Strictness of penalties for underage drinking More strict 43 57 72 60 Less strict 16 4 1 6 Remain as now 39 36 22 31
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2 Variables Variables and and Data Data Types Types Quantitative : Numeric measures Qualitative : A quality exists Discrete : Countable Continuous : Values in an interval Measured The “higher” the data type the more analysis we can do.
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This note was uploaded on 12/08/2011 for the course ECON 211 taught by Professor Daniellass during the Spring '11 term at UMass (Amherst).

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Lecture 4 2011 snow affected - I. Introduction (Chapter 1)...

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