HW_01_02 - .05 .1 .15 .2 Fraction 2 4 6 8 10 12 14 16 18...

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Page 1 of 2 ECO220Y: Homework, Lectures 1 & 2 Readings: Sections 1.1, 1.3, 2.1, 2.3 Exercises: 1.2, 1.4, 1.6, 1.7, 2.6, 2.34, 2.36 (by hand) Problems: (1) Give original examples of data that are: cross-sectional, time series, and longitudinal. For each, describe the structure of the data and what it contains. (2) For each of the following histograms, approximately what percentage of the sample of employees worked 12 or more hours? Show your work for each. (a) (b) (c) (d) Explain any differences in your answers to Parts (a) (c) . (3) A complete census of all 20,000 employees reveals that only 5 percent work 12 or more hours. How does this differ from answers for Question (2) ? Give a plausible explanation using concepts in Lectures 1 and 2. 0 .04 .08 .12 Density 0 2 4 6 8 10 12 14 16 18 Hours of Work Sample of 78 Employees
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Unformatted text preview: .05 .1 .15 .2 Fraction 2 4 6 8 10 12 14 16 18 Hours of Work Sample of 78 Employees 5 10 15 20 Frequency 2 4 6 8 10 12 14 16 18 Hours of Work Sample of 78 Employees Page 2 of 2 (4) Consider the following three questions taken from an actual survey administered in Wisconsin in 1998. Are the data generated by each interval, ordinal or nominal? 3) Circle the type of water body where you primarily fished on this date. (CIRCLE ONLY ONE) 1) lake 2) bay 3) river 4) stream 5) pond 9) Write in the number of hours you spent fishing on this date, excluding travel time to your fishing or launch site. hours 11) Would you describe the view from this fishing site as: (CIRCLE ONLY ONE) 1) undeveloped 2) somewhat developed 3) developed...
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This note was uploaded on 04/10/2010 for the course ECO ECO220 taught by Professor Atamazaheri during the Spring '09 term at University of Toronto.

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HW_01_02 - .05 .1 .15 .2 Fraction 2 4 6 8 10 12 14 16 18...

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