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Consider a three-firm supply chain consisting of a retailer, manufacturer, and supplier. The retaile

Consider a three-firm supply chain consisting of a
retailer, manufacturer, and supplier. The retailerAc€?cs demand over
an 8-week period was 105 units each of the first 2 weeks, 220 units
each of the second 2 weeks, 280 units each of the third 2 weeks, and
400 units each of the fourth 2 weeks. The following table presents
the orders placed by each firm in the supply chain. Notice, as is
often the case in supply chains due to economies of scale, that total
units are the same in each case, but firms further up the supply
chain (away from the retailer) place larger, less frequent, orders.
WEEK RETAILER MANUFACTURER SUPPLIER
1            105                   210                     650
2            105
3            220                   440
4            220
5            280                   560                       1360
6            280
7            400                   800
8            400
a) What is the bullwhip measure for the retailer?
b) What is the bullwhip measure for the manufacturer?
c) What is the bullwhip measure for the supplier?

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