Statistical Preliminary 1. Measure of central tendency and dispersion Mean of a group of number is the average value of these numbers. Median is the number that is in the middle when you order these numbers in ascending order. It is probably immediate to you that the order doesn’t have to be ascending. A tricky question is what the median is when the total number of the numbers is even. In that case‚ you just take the average of the two numbers that are in the middle. For example‚ suppose
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14-10-12 下午1:09 ECON-3740 Introduction to Econometrics - Fall‚ 2014 Instructor: D Prescott Due date: Thursday‚ 16 October‚ 3pm Submit Reports to D Prescott’s Office‚ Room 733 MacKinnon Report #1 - Instructions. No reports will be accepted after the deadline. Please submit what you have completed by the deadline. See the course web page for additional information on programming and spreadsheet hints. BE SURE TO USE THE DATA SET ASSIGNED TO YOU Grades will be assigned to each section. The
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Mostly Harmless Econometrics: An Empiricist’ Companion s Joshua D. Angrist Massachusetts Institute of Technology Jörn-Ste¤en Pischke The London School of Economics March 2008 ii Contents Preface Acknowledgments Organization of this Book xi xiii xv I Introduction 1 3 9 10 12 16 1 Questions about Questions 2 The Experimental Ideal 2.1 2.2 2.3 The Selection Problem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Random Assignment Solves the Selection
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INTRODUCTORY ECONOMETRICS Lectures 1 & 2 Statistics for Econometrics POPULATION AND SAMPLE Population – the group of ALL people or objects that are under study Sample – a sub-set of the population Parameter – a numerical characteristic of a population 1. Population & Sample Means 2. Expected Values 3. Population & Sample Variances 4. Population & Sample Covariances 5. Population & Sample Correlation Coefficients 6. Estimators Statistic – a numerical characteristic of a sample
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University of Hong Kong Introductory Econometrics (ECON0701)‚ Fall 2013 22 November 2013 Further Issues in Using OLS with Time Series Data • Last time‚ we discussed the assumptions necessary for OLS parameter estimates to be consistent in a time series context. • We also compared these assumptions with the assumptions necessary for OLS to be unbiased. • In general‚ the conditions are more restrictive for OLS to be unbiased than for OLS to be consistent‚ so in a time series context‚ it
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Econometrics I Yarine Fawaz Exercises Econometrics: Set 1-Correction Computer exercises: 1) Use the data in SLEEP75.RAW from Biddle and Hamermesh (1990) to study whether there is a tradeoff between the time spent sleeping per week and the time spent in paid work. We could use either variable as the dependent variable. For concreteness‚ estimate the model sleep 0 1totwork u ‚ where sleep is minutes spent sleeping at night per week and totwrk is total minutes worked during the
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ECONOMETRICS Bruce E. Hansen c 2000‚ 20101 University of Wisconsin www.ssc.wisc.edu/~bhansen This Revision: January 10‚ 2010 Comments Welcome 1 This manuscript may be printed and reproduced for individual or instructional use‚ but may not be printed for commercial purposes. Contents Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi 1 Introduction 1.1 What is Econometrics? . . . . . . . . . . . . 1.2 The Probability
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Dear Parents‚ Congratulations! We are very pleased that your child has been successful in gaining a place at Beal High School and will be joining us in September 2012. It has been a long process but this is where the real work starts. We hope to support you as much as we can through the next year and this evening will be the beginning of that process. This booklet has been designed to answer your frequently asked questions and will provide you with the practical information that we feel
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ECONOMETRIC ANALYSIS. INDEX: - Introduction..................................................................................3 -Background....................................................................................8 -Empirical Analysis.........................................................................9 -Conclusion.....................................................................................31 -Bibliography.............................................................
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profit as certainly as outmoded production methods or ineffective selling techniques. This simple but obvious point has only recently come to be properly understood. This book presents the principles‚ methods and strategies that represent the modern approach to materials management in all sectors of the economy. In analysing business operations‚ the phrase "Value-added concept1’ is often used to characterise the difference between the cost of component materials and the selling price of the finished
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