hw1_answer_su05

hw1_answer_su05 - Economics 120A Professor Yongil Jeon...

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Economics 120A Name: _________________________ Professor Yongil Jeon Summer 2005 Student ID#: _________________________ Answer to Homework #1 (Midterm Exam, Summer 2004) 1. (10 points) Columbia House provides CDs and tapes to its mail-order club members. A Columbia House Music Survey asked new club members to complete an 11- question survey. Some of the questions asked were: (a) (2 points) How many CDs and tapes have you bought in the last 12 months? (b) (2 points) Are you currently a member of a national mail-order book club? (c) (2 points) What is your age? (d) (2 points) Including yourself, how many people (adults and children) are in your household? (e) (2 points) What kinds of music are you interested in buying? (15 categories were listed, including hard rock, soft rock, adult contemporary, heavy metal, rap, and country). Comment on whether each question provides discrete, continuous, yes/or, ordinal categorical, nominal scale data. (answer) (a) continuous data, but can be discrete data (b) yes/no data (c) continuous data, but can be discrete data (d) discrete data (e) nominal scale data
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2 Answer to HW #1, ECON 120A, SUMMER 2005 2. (10 points) Fortune magazine provides data on how the 500 largest U.S. industrial corporations rank in terms of revenues and profits. Data for a sample for Fortune 500 companies are given in the following table: A sample of 10 Fortune 500 companies Companies Revenue ($ millions) Profit ($ millions) Industry Code US Airways Group 8688.0 538.0 3 International Paper 19500.0 213.0 23 Tyson Foods 7414.1 25.1 20 Hewlett-Packard 47061.0 2945.0 13 Intel 26273.0 6068.0 49 Northrup Grumman 8902.0 241.0 2 Seagate Technology 6819.0 -530.0 11 Unisys 7208.4 387.0 10 Westvaco 2904.7 132.0 23 Campbell Soup 7505.0 660.0 20 (a) (2 points)What is the population? (b)
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This note was uploaded on 04/15/2008 for the course ECON 120A taught by Professor Jeyeon during the Summer '08 term at UCSD.

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hw1_answer_su05 - Economics 120A Professor Yongil Jeon...

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