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# HW_09_10 - ECO220Y Homework Lectures 9 10 Readings Sections...

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Page 1 of 3 ECO220Y: Homework, Lectures 9 & 10 Readings: Sections 5.1 – 5.4, Handout “Chapter 1: Economic Questions and Data” from Introduction to Econometrics , Second Edition, by James H. Stock and Mark W. Watson, 2007, Sections 6.1 – 6.3 Exercises: 5.1 – 5.3, 5.6, 5.7, 5.9, 5.13, 5.17, 5.18, 6.5, 6.8, 6.10, 6.17 – 6.22, 6.28, 6.33, 6.45, 6.46, 6.50, 6.52 – 6.59, 6.62, 6.63, 6.65, 6.66, 6.68, 6.69, 6.87 Applets (CD-ROM): Applet 3 (page 167) Problems: (1) This map of the state of Wisconsin (divided by counties) shows the sampling plan for the 1998 Wisconsin Fishing and Outdoor Recreation survey. The anglers in the 1 st area had the highest probability of being included in the sample, anglers in the 2 nd area had the second highest, …, and anglers in the 6 th area had the lowest probability of being included in the sample. Anglers outside these areas had no chance of inclusion. (a) Which kind of sampling was done: random sampling, a stratified random sampling, cluster sampling or something else? (b) Using this sample, can we make inferences about all Wisconsin anglers? (c) Based on this sampling plan, which group of anglers did the researchers wish to make the most precise inferences about (have the least sampling noise for)? (2) Considering the following taken from the Summer 2006 ASSU Anti-Calendar, use the language we learned in Lecture 9 and the assigned readings to discuss any biases that might be present.

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