Tutorial 5 S11

Tutorial 5 S11 - Tutorial 5 1. For the Hawkins Company, the...

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Tutorial 5 1. For the Hawkins Company, the monthly percentages of all shipments that were received on time over the past 12 months are 80, 82, 84, 83, 83, 84, 85, 84, 82, 83, 84, and 83. a. Graph this time series. Does a linear trend appear? b. Compare a three-month moving average forecast with an exponential smoothing forecast for α = 0.2. Which provides the better forecasts? c. What is the forecast for next month? 2. Alabama building contracts for a 12-month period (in millions of dollars) are 240, 350, 230, 260, 280, 320, 220, 310, 240, 310, 240, and 230. a. Compare a three-month moving average forecast with an exponential smoothing forecast using = 0.2. Which provides the better forecasts? b. What is the forecast for next month? 3. TV ratings provided by Nielsen Media Research show the percentage of TV-owning households tuned in to a particular program. The following data show the rating for the top- rated TV show of each season, from 1987-1988 to 2000-2001
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This note was uploaded on 06/07/2011 for the course ECON 3 taught by Professor Dd during the Spring '11 term at Alvin CC.

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