Lenovo uses the ZX-81 chip in some of its laptop computers. The prices for the chip during the last 12 months were as follows: Price Per Chip Price Per Chip TET Month Month $1.85 $2.00 $1.85 $1.65 $1.60 January February $1.61 $1.60 $1.85 July August September March April October $1.88 $1.60 May June November $1.89 December $1.75 This exercise contains only parts a, b, and c. a) Using a 2-month moving average, the forecast for periods 11 and 12 is (round your responses to two decimal places): Month Mar Apr May Jun Jul Aug Sep Oct Nov Dec Forecast $1.73 1.61 1.73 1.87 1.89 1.95 1.93 1.75 1.63 1.60 b) Using a 3-month moving average, the forecast for periods 11 and 12 is (round your responses to two decimal places): Month Apr Мay Jun Jul Aug Sep Oct Nov Dec Forecast $1.69 1.69 1.78 1.87 1.92 1.91 1.83 1.70 1.62 c) The mean absolute deviation based on a 2-month moving average of March through December is $.15 (round your response to three decimal places).

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
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Lenovo uses the ZX-81 chip in some of its laptop computers. The prices for the chip during the last 12 months were as follows:
TET
Month
Price Per Chip
Month
Price Per Chip
$1.85
$1.61
$1.60
$2.00
$1.85
$1.65
$1.60
July
January
February
August
September
March
$1.85
October
April
May
$1.88
$1.89
$1.60
$1.75
November
June
December
This exercise contains only parts a, b, and c.
a) Using a 2-month moving average, the forecast for periods 11 and 12 is (round your responses to two decimal places):
Month
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Forecast
$1.73
1.61
1.73
1.87
1.89
1.95
1.93
1.75
1.63
1.60
b) Using a 3-month moving average, the forecast for periods 11 and 12 is (round your responses to two decimal places):
Month
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Forecast
$1.69
1.69
1.78
1.87
1.92
1.91
1.83
1.70
1.62
c) The mean absolute deviation based on a 2-month moving average of March through December is $.15 (round your response to three decimal places).
Transcribed Image Text:Lenovo uses the ZX-81 chip in some of its laptop computers. The prices for the chip during the last 12 months were as follows: TET Month Price Per Chip Month Price Per Chip $1.85 $1.61 $1.60 $2.00 $1.85 $1.65 $1.60 July January February August September March $1.85 October April May $1.88 $1.89 $1.60 $1.75 November June December This exercise contains only parts a, b, and c. a) Using a 2-month moving average, the forecast for periods 11 and 12 is (round your responses to two decimal places): Month Mar Apr May Jun Jul Aug Sep Oct Nov Dec Forecast $1.73 1.61 1.73 1.87 1.89 1.95 1.93 1.75 1.63 1.60 b) Using a 3-month moving average, the forecast for periods 11 and 12 is (round your responses to two decimal places): Month Apr May Jun Jul Aug Sep Oct Nov Dec Forecast $1.69 1.69 1.78 1.87 1.92 1.91 1.83 1.70 1.62 c) The mean absolute deviation based on a 2-month moving average of March through December is $.15 (round your response to three decimal places).
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