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: Month Price Per Chip Month Price Per Chip $2.00 January February $1.90 July August September $1.61 $1.85 $1.65 $1.50 March $1.60 April May $1.85 October $1.88 $1.50 $1.75 November June $1.95 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 $1.76 1.61 1.73 1.87 1.92 1.98 1.93 1.75 1.57 1.5 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 $1.70 1.67 Forecast 1.69 1.78 1.89 1.94 1.93 1.83 1.55 c) The mean absolute deviation based on a 2-month moving average of March through December is $ .169 (round your response to three decimal places). The mean absolute deviation based on a 3-month moving average of April through December is $ (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:
Month
Price Per Chip
Month
Price Per Chip
$1.90
$2.00
January
February
March
$1.61
$1.60
July
August
September
$1.85
$1.65
$1.85
$1.50
April
May
October
$1.88
November
$1.50
June
$1.95
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
$1.76
1.61
1.73
1.87
1.92
1.98
1.93
1.75
1.57
1.5
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
$1.70
1.69
1.78
1.89
1.94
1.93
1.83
1.67
1.55
c) The mean absolute deviation based on a 2-month moving average of March through December is $ .169 (round your response to three decimal places).
The mean absolute deviation based on a 3-month moving average of April through December is $ (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: Month Price Per Chip Month Price Per Chip $1.90 $2.00 January February March $1.61 $1.60 July August September $1.85 $1.65 $1.85 $1.50 April May October $1.88 November $1.50 June $1.95 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 $1.76 1.61 1.73 1.87 1.92 1.98 1.93 1.75 1.57 1.5 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 $1.70 1.69 1.78 1.89 1.94 1.93 1.83 1.67 1.55 c) The mean absolute deviation based on a 2-month moving average of March through December is $ .169 (round your response to three decimal places). The mean absolute deviation based on a 3-month moving average of April through December is $ (round your response to three decimal places).
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