Last August the XT chainof gasoline stations had a temporary sales promotion in effect. In thepromotion, any customer who made a purchase of ten or more gallons of gasolinewas entitled to a free car wash. For the month of August, XT experienced a tenpercent increase in gasoline sales as compared to sales in August the previousyear, so evidently the promotion was successful as a means of boosting sales. In evaluating theargument, it would be most helpful to answer which of the following? A. In the areas in which XT’s gasoline stations operate, howdid total combined gasoline sales for all gasoline stations last August comparewith sales for the previous August? B. Was the money that XT earned from the increase in gasolinesales enough to offset the cost of providing free car washes during thepromotion? C. Were there any customers who bought ten or more gallons atan XT gasoline station during the promotion who would have or more gallons atan 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 otherbusinesses to provide the car washes that customers were offered in thepromotion? AreXT’s gasoline sales in August usually significantly higher than one twelfth ofXT’s annual gasoline sales?
答案选A,我选C,看了一些老帖,讨论的不多,个人依然觉得地区销售上升无法评估XT的促销就没有效果,因为地区销售上升,所以XT销售也要上升?我不认同,甚至因果颠倒XT促销上升带动了地区销售上升也是可以的。评估促销是否有效唯一的依据就是促销时期和不促销时期的对比吧。大家给看看。我思维局限了
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