The number of users of a certain website (in millions) from 2004 through 2011 follows. Year Period Users (Millions) 2004 1 1 2005 2 5 2006 3 11 2007 4 59 2008 5 146 2009 6 360 2010 7 608 2011 8 846 (a) Construct a time series plot. -A time series plot contains a series of 8 points connected by line segments. The horizontal axis ranges from 0 to 10 and is labeled: Period. The vertical axis ranges from 0 to 900 and is labeled: Millions of Users. The first point is at approximately (1, 850). The rest are plotted from left to right at regular increments of 1 period in a downward, diagonal direction that becomes less steep as period increases. The last point is at approximately (8, 0). -A time series plot contains a series of 8 points connected by line segments. The horizontal axis ranges from 0 to 10 and is labeled: Period. The vertical axis ranges from 0 to 900 and is labeled: Millions of Users. The first point is at approximately (1, 0). The rest are plotted from left to right at regular increments of 1 period in an upward, diagonal direction that doesn't appear to become more or less steep as period increases. The last point is at approximately (8, 850). -A time series plot contains a series of 8 points connected by line segments. The horizontal axis ranges from 0 to 10 and is labeled: Period. The vertical axis ranges from 0 to 900 and is labeled: Millions of Users. The first point is at approximately (1, 0). The rest are plotted from left to right at regular increments of 1 period in an upward, diagonal direction that becomes steeper as period increases. The last point is at approximately (8, 850). -A time series plot contains a series of 8 points connected by line segments. The horizontal axis ranges from 0 to 10 and is labeled: Period. The vertical axis ranges from 0 to 900 and is labeled: Millions of Users. The first point is at approximately (1, 850). The rest are plotted from left to right at regular increments of 1 period in a downward, diagonal direction that doesn't appear to become more or less steep as period increases. The last point is at approximately (8, 0). 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 a downward linear trend. -The time series plot exhibits an upward 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.) Tt = ??
The number of users of a certain website (in millions) from 2004 through 2011 follows. Year Period Users (Millions) 2004 1 1 2005 2 5 2006 3 11 2007 4 59 2008 5 146 2009 6 360 2010 7 608 2011 8 846 (a) Construct a time series plot. -A time series plot contains a series of 8 points connected by line segments. The horizontal axis ranges from 0 to 10 and is labeled: Period. The vertical axis ranges from 0 to 900 and is labeled: Millions of Users. The first point is at approximately (1, 850). The rest are plotted from left to right at regular increments of 1 period in a downward, diagonal direction that becomes less steep as period increases. The last point is at approximately (8, 0). -A time series plot contains a series of 8 points connected by line segments. The horizontal axis ranges from 0 to 10 and is labeled: Period. The vertical axis ranges from 0 to 900 and is labeled: Millions of Users. The first point is at approximately (1, 0). The rest are plotted from left to right at regular increments of 1 period in an upward, diagonal direction that doesn't appear to become more or less steep as period increases. The last point is at approximately (8, 850). -A time series plot contains a series of 8 points connected by line segments. The horizontal axis ranges from 0 to 10 and is labeled: Period. The vertical axis ranges from 0 to 900 and is labeled: Millions of Users. The first point is at approximately (1, 0). The rest are plotted from left to right at regular increments of 1 period in an upward, diagonal direction that becomes steeper as period increases. The last point is at approximately (8, 850). -A time series plot contains a series of 8 points connected by line segments. The horizontal axis ranges from 0 to 10 and is labeled: Period. The vertical axis ranges from 0 to 900 and is labeled: Millions of Users. The first point is at approximately (1, 850). The rest are plotted from left to right at regular increments of 1 period in a downward, diagonal direction that doesn't appear to become more or less steep as period increases. The last point is at approximately (8, 0). 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 a downward linear trend. -The time series plot exhibits an upward 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.) Tt = ??
Chapter4: Linear Functions
Section4.3: Fitting Linear Models To Data
Problem 24SE: Table 6 shows the year and the number ofpeople unemployed in a particular city for several years....
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Question
The number of users of a certain website (in millions) from 2004 through 2011 follows.
Year | Period | Users (Millions) |
---|---|---|
2004 | 1 | 1 |
2005 | 2 | 5 |
2006 | 3 | 11 |
2007 | 4 | 59 |
2008 | 5 | 146 |
2009 | 6 | 360 |
2010 | 7 | 608 |
2011 | 8 | 846 |
(a)
Construct a time series plot.
-A time series plot contains a series of 8 points connected by line segments. The horizontal axis ranges from 0 to 10 and is labeled: Period. The vertical axis ranges from 0 to 900 and is labeled: Millions of Users. The first point is at approximately (1, 850). The rest are plotted from left to right at regular increments of 1 period in a downward, diagonal direction that becomes less steep as period increases. The last point is at approximately (8, 0).
-A time series plot contains a series of 8 points connected by line segments. The horizontal axis ranges from 0 to 10 and is labeled: Period. The vertical axis ranges from 0 to 900 and is labeled: Millions of Users. The first point is at approximately (1, 0). The rest are plotted from left to right at regular increments of 1 period in an upward, diagonal direction that doesn't appear to become more or less steep as period increases. The last point is at approximately (8, 850).
-A time series plot contains a series of 8 points connected by line segments. The horizontal axis ranges from 0 to 10 and is labeled: Period. The vertical axis ranges from 0 to 900 and is labeled: Millions of Users. The first point is at approximately (1, 0). The rest are plotted from left to right at regular increments of 1 period in an upward, diagonal direction that becomes steeper as period increases. The last point is at approximately (8, 850).
-A time series plot contains a series of 8 points connected by line segments. The horizontal axis ranges from 0 to 10 and is labeled: Period. The vertical axis ranges from 0 to 900 and is labeled: Millions of Users. The first point is at approximately (1, 850). The rest are plotted from left to right at regular increments of 1 period in a downward, diagonal direction that doesn't appear to become more or less steep as period increases. The last point is at approximately (8, 0).
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 a downward linear trend.
-The time series plot exhibits an upward 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.)
Tt = ??
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