In 2005, Xerox Corporation's revenue from color products and services was $4.6 billion, or 30%of Xerox's total following data show the quarterly percentage change in revenue for 12 quarters. revenue. The Year Quarter %Growth 2003 1 15 2 19 3 15 4 20 2004 1 26 2 17 3 18 4 21 2005 1 15 2 17 3 22 4 17 (a)Use exponential smoothing to forecast this time series. Consider smoothing constants of a=0.2, and a=0.3.What value of the smoothing constant provides the best forecast? (b)What is the forecast of the percentage change for the first quarter of 2006?

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In 2005, Xerox Corporation's revenue from
color products and services was $4.6 billion,
30%of Xerox's total revenue.
following data show the quarterly percentage
change in revenue for 12 quarters.
or
The
Year Quarter %Growth
2003 1
15
2
19
3
15
14
20
2004 1
26
17
3
18
4
21
2005 1
15
2.
17
3
22
4
17
(a)Use exponential smoothing to forecast this
time series. Consider smoothing constants of
a=0.2, and a=0.3.What value of the
smoothing
constant provides the
best
forecast?
(b)What is the forecast of the percentage
change for the first quarter of 2006?
Transcribed Image Text:In 2005, Xerox Corporation's revenue from color products and services was $4.6 billion, 30%of Xerox's total revenue. following data show the quarterly percentage change in revenue for 12 quarters. or The Year Quarter %Growth 2003 1 15 2 19 3 15 14 20 2004 1 26 17 3 18 4 21 2005 1 15 2. 17 3 22 4 17 (a)Use exponential smoothing to forecast this time series. Consider smoothing constants of a=0.2, and a=0.3.What value of the smoothing constant provides the best forecast? (b)What is the forecast of the percentage change for the first quarter of 2006?
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