900900800800700700600600500500400400300300200-2001001000f0f46.8.1046.810PeriodPeriodCWhat type of pattern exists?The time series plot exhibits an upward curvilinear trend.The time series plot exhibits a downward curvilinear trend.The time series plot exhibits an upward linear trend.The time series plot exhibits a downward linear 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. Since this is timeseries, make sure to use t as the variable for the time period when entering the equation.) The number of users of a certain website (in millions) from 2004 through 2011 follows.YearPeriodUsers (Millions)2004112005272006112007458200814620096.3592010760720118.846(a) Construct a time series plot.9009008008007007006006005005004004003003002002001001000f46 81046.810PeriodPeriod900900800800700700600600UsersMillions of UsersUsersMillions of Users2.

The number of users of a certain website (in millions) from 2004 through 2011 follows. Year Period Users (Millions) 2004 1 1 2005 2 7 2006 11 2007 4 58 2008 5 146 2009 359 2010 7 607 2011 8 846 (a) Construct a time series plot. 900 900 800 800 700- 700 600 600 500 500 400 400 300 300 200 100- 200 100 4 6 8 10 2 4 6 8 10 Period Period 900 T 800- * 700- 900 800 * 700- Millions of Users Millions of Users

The number of users of a certain website (in millions) from 2004 through 2011 follows. Year Period Users (Millions) 2004 1 1 2005 2 7 2006 11 2007 4 58 2008 5 146 2009 359 2010 7 607 2011 8 846 (a) Construct a time series plot. 900 900 800 800 700- 700 600 600 500 500 400 400 300 300 200 100- 200 100 4 6 8 10 2 4 6 8 10 Period Period 900 T 800- * 700- 900 800 * 700- Millions of Users 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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Question

900
900
800
800
700
700
600
600
500
500
400
400
300
300
200-
200
100
100
0f
0f
4
6.
8.
10
4
6.
8
10
Period
Period
C
What type of pattern exists?
The time series plot exhibits an upward curvilinear trend.
The time series plot exhibits a downward curvilinear trend.
The time series plot exhibits an upward linear trend.
The time series plot exhibits a downward linear 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. Since this is time
series, make sure to use t as the variable for the time period when entering the equation.)

The number of users of a certain website (in millions) from 2004 through 2011 follows.
Year
Period
Users (Millions)
2004
1
1
2005
2
7
2006
11
2007
4
58
2008
146
2009
6.
359
2010
7
607
2011
8.
846
(a) Construct a time series plot.
900
900
800
800
700
700
600
600
500
500
400
400
300
300
200
200
100
100
0f
4
6 8
10
4
6.
8
10
Period
Period
900
900
800
800
700
700
600
600
Users
Millions of Users
Users
Millions of Users
2.

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