Following several years of declining advertising sales, the Greenville Times reorganized its advertising sales force two years ago.
Before the reorganization, the sales force was organized geographically, with some sales representatives concentrating on city-center businesses and others concentrating on different outlying regions.
The reorganization attempted to increase the sales representatives’ knowledge of clients’ businesses by having each sales representative deal with only one type of industry or of retailing.
After the reorganization, advertising sales increased.
In assessing whether the improvement in advertising sales can properly be attributed to the reorganization, it would be helpful to find out each of the following EXCEPT:
A. Two years ago, what proportion of the Greenville Times’s total revenue was generated by advertising sales?
B. Has the circulation of the Greenville Times increased substantially in the last two years?
C. Has there been a substantial turnover in personnel in the advertising sales force over the last two years?
D. Before the reorganization, had sales representatives found it difficult to keep up with relevant developments in all the types of businesses to which they were assigned?
E. Has the economy in Greenville and the surrounding regions been growing rapidly over the last two years?
This question completely confuses me. Could anybody analyze each answer for me???
Is it asking for a selection that can not be used to evaluate the conclusion???
Thank you la~~~
The answer is A.作者: flyfairy019 时间: 2011-9-9 21:45
看时间壮语，A选项说的是2year ago的情况，如果改成 last two years, A,B选项就是同一个意思，但是再往深一点想，proportion这只是一个比例，sales 是5， total earn是10，在两年以前rate是1/2，那么2年后，sales是10，total为20，rate也是1/2,但是sale是增加的，只能说明sales 与 total同时增长一相同的增长率，不能说明是因为重组带来的。如果，sales是10，total earn30是，可以说明reorganization是无效的，尽管sales是增加的。如果sales 是10，total是9可以说明reorganization是有效的。当然啦，选项如果改成是
Last two years , what changes in proportion of the Greenville Times’s total revenue was generated by advertising sales? 我觉得A就对了。
今天看到manhattan上的解释比较靠谱，大家参考：
you're interested in anything that
* could affect the advertising sales,
BUT
* isn't caused by the reorganization.
(e) is definitely relevant: if there has been substantial and rapid economic growth, then this could cause a spike in advertising sales that's not at all related to the internal reorganization of the sales department. therefore, we need to know whether this has happened in order to properly determine cause and effect.
(a) doesn't matter: we don't care about any other revenue, besides advertising-sales revenue.
and even if we did care about those types of revenue, the proportion still wouldn't tell us anything at all about whether, or by how much, advertising sales revenue has gone up or down.
either of these two reasons is enough to eliminate this choice; the combination of both is absolutely beyond all doubt.作者: socat123 时间: 2011-9-17 20:32
A is irrelevant.
最怕evaluation的题了,10个要错8个之类的 >.<
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