The number of users of a certain website (in millions) from 2004 through 2011 follows. Year Period Users (Millions) 2004 2005 5 2006 11 2007 4 57 2008 146 2009 6 360 2010 608 2011 845 (a) Construct a time series plot. 900 800 900 800 700 900 800 900- 800 700 600 500 400 300- 200 100 700 700 600 600 600 E 500 * 500 5 50 400 400 400 300 200 100 300 300 200 100 200 100- of 4. 10 4 6. 10 10 4 6. 10 Period Period Period Period What type of pattern exists? O The time series plot exhibits a downward linear trend. O The time series plot exhibits an upward linear trend. O The time series plot exhibits an upward curvilinear trend. O The time series plot exhibits a downward curvilinear trend, (b) Using Minitab or Excel, develop a quadratic trend equation that can be used to forecast users (in millions). (Round your numerical values to one decimal place.) 7- 110 - 117.1-26.3 Millions of Users

The number of users of a certain website (in millions) from 2004 through 2011 follows. Year Period Users (Millions) 2004 2005 5 2006 11 2007 4 57 2008 146 2009 6 360 2010 608 2011 845 (a) Construct a time series plot. 900 800 900 800 700 900 800 900- 800 700 600 500 400 300- 200 100 700 700 600 600 600 E 500 * 500 5 50 400 400 400 300 200 100 300 300 200 100 200 100- of 4. 10 4 6. 10 10 4 6. 10 Period Period Period Period What type of pattern exists? O The time series plot exhibits a downward linear trend. O The time series plot exhibits an upward linear trend. O The time series plot exhibits an upward curvilinear trend. O The time series plot exhibits a downward curvilinear trend, (b) Using Minitab or Excel, develop a quadratic trend equation that can be used to forecast users (in millions). (Round your numerical values to one decimal place.) 7- 110 - 117.1-26.3 Millions of Users

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Section 2.1, question 9