gwd 24-22-Q17

gmatziyu · 发表于 2010-4-21 17:59:48

Q17:GWD32-Q8

Last August the XT chain of gasoline stations had a temporary sales promotion in effect. In the promotion, any customer who made a purchase of ten or more gallons of gasoline was entitled to a free car wash. For the month of August, XT experienced a ten percent increase in gasoline sales as compared to sales in August the previous year, so evidently the promotion was successful as a means of boosting sales.

In evaluating the argument, it would be most helpful to answer which of the following?

A.In the areas in which XT’s gasoline stations operate, how did total combined gasoline sales for all gasoline stations last August compare with sales for the previous August?

B.Was the money that XT earned from the increase in gasoline sales enough to offset the cost of providing free car washes during the promotion?

C.Were there any customers who bought ten or more gallons at an XT gasoline station during the promotion who would have or more gallons at an XT gasoline in lower quantities, but more frequently,if the promotion had not been in effect?

D.Did XT or any of its gasoline stations have to pay other businesses to provide the car washes that customers were offered in the promotion?

E.Are XT’s gasoline sales in August usually significantly higher than one twelfth of XT’s annual gasoline sales?

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请问这题为什么选a呢？

realric · 发表于 2010-4-21 18:49:25

我的理解，文中讨论的是sales,而不是profits,那些讨论投入，回报的选项就应该不对了，比如b,d。C跟sales没什么关系。E讨论的时间范围不对，文中只比较了当年和去年的August, 而E却横向比较八月跟一年12个月的sales,那样影响的因素就很多了，比如油价。。。。至于A,假设promotion是有用的，是不是因为XT Chain of Gasoline stations的sale增长了，必然抢了统一地区没有promotion的那些station的生意，此消彼长，但对整体的sale影响不大。反倒是如果combined sales也增长了，意味着其他没有promotion的station的sale也增长了，那不就削弱了promotion的作用了么？
越写越乱。。。。。。希望有点用。。。。。
实话说，我试看了你的答案才这样想的，传说中的马后跑。。。。。
要让我做，肯定选错。。

ruimiss · 发表于 2010-4-21 19:55:33

同意楼上的意思，文中要评估但是 the promotion 是否成功增加了sales.那么喝profit酒无关了。

如何知道sales是否是因为推行了这个promotion而涨，还是说所有的加油站今年八月比去年八月涨了？那就要比较所有的八月油价，如果就这里的涨了，那就真的是因为这个策略使得油价上涨了。不是其他原因。

skynova · 发表于 2010-4-21 20:17:23

A提到的问题排除了潜在的他因削弱：如果加油站的销售都增加了（也就是没采用这个促销的加油站的销售也增加了），那么就不能肯定说是这个促销造成了sales boost，所以这个问题需要被考虑。

gwd 24-22-Q17

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