Statistics for Business & Economics, Revised (with XLSTAT Education Edition Printed Access Card)
Statistics for Business & Economics, Revised (with XLSTAT Education Edition Printed Access Card)
13th Edition
ISBN: 9781337094160
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: Cengage Learning
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Chapter 20.7, Problem 15E
To determine

Find the weighed aggregated quantity index with a 2000 base and comment on the growth or decline in quantities over the 2000-2015 period.

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Sales of a particular product for the years 2017 through 2020 have been 46,850, 61,204, 51,632 and 78,068 respectively. What sales would you predict for 2021 using a simple four-year moving average?
A September, 2014, survey indicated that 53% of U.S. adults aged 18–29 used the social media platform Instagram. If this was 21 percentage points lessthan twice the percent that used Twitter, what percent of U.S. adults aged 18–29 used Twitter?
The Bayside Fountain Hotel is adjacent to County Coliseum, a 24,000-seat arena that is home tothe city’s professional basketball and ice hockey teams and that hosts a variety of concerts, tradeshows, and conventions throughout the year. The hotel has experienced the following occupancyrates for the past 9 years, since the coliseum opened:Year Occupancy Rate (%)1                      832                      783                     754                   815                         866                   857                        898                    909                  86 Compute an exponential smoothing forecast with a = .20, an adjusted exponential smoothingforecast with a = .20 and B=30 and a linear trend line forecast. Compare the three forecasts,using MAD and average error ( ), and indicate which seems to be most accurate.
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