ENBIS Challenge 2009 Thomas Mühlenstädt Institut für Mathematische Statistik und
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ENBIS Challenge 2009
Thomas Mühlenstädt
Institut fürMathematische Statistik und industrielle Anwendungen
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Time
Rev
enue
per
day
Jan Feb Mar Apr May Jun Jul Aug Sep Okt Nov
2000
0060
0000
1000
000
Further comments on Configurations:
• No differences between stores• 864 possible combinations• No empty class• Costumers prefer „medium“ configurations
Configuration:
possible specifications Screen 15” 17” *Battery 4 h 5 h 6 hMemory 1 GB 2 GB 4 GB *CPU 1.5 GHz 2GHz 2.4 GHz *HD 40 GB 80 GB 120 GB 300 GBW Lan No YesBundled No Yes
New Configurations:
4 GB RAM 2.4 GHz 17‘ Screen
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Price minimum requirement: £ 300 15“, 4h Battery, 1 GB RAM, 1.5GHz, 40 GB HD
Promotional sales activities:August / September:
Increase of daily sales volume: 100 %Increase of daily revenue: 86 %
December:Increase of daily sales volume: 78 %Increase of daily revenue: 70 %
Time
Rev
enue
per
day
Jan Feb Mar Apr May Jun Jul Aug Sep Okt Nov
2000
0060
0000
1000
000
Price / Revenue:
RAM: 2GB: £ 50 4GB: £ 150HD: 80GB: £ 40 120GB: £ 60
300GB: £ 120Screen: 17”: £ 100
CPU: 2GHz: £ 25 2.4GHz: £ 50Battery: 5h: £ 20 6h: £ 100
Wlan: Yes: £ 20Bundled: Yes: £ 50
New Configurations:
4 GB RAM 2.4 GHz 17‘ Screen
Second and Third Jump:
Marketing, Price?
Store: No influenceTime: Decreasing trend,
depending on memory
Discount?: 5 stores granted discount of approx 30% duringMarch, June, September, December
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Time
Rev
enue
per
sto
re
Jan Feb Mar Apr May Jun Jul Aug Sep Okt Nov Dec
050
000
1500
0025
0000
Spatial topics:
Revenue per day in each store:Big differences between stores
Map of LondonLocation of Stores: „big“ stores „medium“ stores „small“ stores
population density plot
Conclusions:• Some stores might be better• Location not always good
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Conclusions:
• Configurations:– Offer more hard ware– Also „smaller“ specifications
• Price / Revenue:– Discounts not effective,– Revenue increased two times
• Store locations:– Concentrate on „big“ shops– Some stores might perform better– Some stores are not located very good
• Use of data:– More connotation