GMAT写作是GMAT考试中的一个重要组成部分，考生在备考阶段一定不要忽视GMAT写作的重要作用。接下来小编将结合具体的题目分析为大家带来GMAT写作样本不足逻辑错误真题解析，希望对大家的写作备考有帮助。
GMAT写作样本不足逻辑错误
样本不足是GMAT写作“七宗罪”中的一种，也是一种非常常见的逻辑错误。具体指题干中给出的论据或例子不充分，逻辑链不完整，不足以说明某个问题，不能支撑作者得出某一结论。如：A公司实施了薄利多销的政策后，利润直线上升。因此就得出结论：薄利多销的政策适用于所有公司。
样本不足英文表述：Insufficient-sample
The evidence the author provides is insufficient to support the conclusion drawn from it. One example is logically unsounded to establish a general conclusion (The statistics from only a few recent years are not necessarily a good indicator of future trends), unless it can be shown that A1 is representative of all A. It is possible that.... In fact, in face of such limited evidence, the conclusion that B is completely unwarranted.
样本不足逻辑错误的特点
1. 样本不足导致的直接错误是结论不具有代表性。
2. 样本不足得出的结论往往具有争议性，不容易使人信服。
3. 样本不足则涉及到具体的数字和范围，比如用100个人的调查代表1000个人的态度，用一个学校的调查代表一个整个州的情况等等。
4. 样本不足和非此即彼有一定的区别，前者指的是给出的证据或前提不充分导致结论不能使人信服。而非此即彼则强调限制了得出结论的范围，认为不是A就是B，排除了其他的可能性。更多相关内容请点击》GMAT写作零基础该如何备考。
样本不足逻辑错误真题解析
The following appeared in a memorandum to the work-group supervisors of the GBS Company:
"The CoffeeCart beverage and food service located in the lobby of our main office building is not earning enough in sales to cover its costs, and so the cart may discontinue operating at GBS: Given the low staff morale, as evidenced by the increase in the number of employees leaving the company, the loss of this service could present a problem, especially since the staff morale questionnaire showed widespread dissatisfaction with the snack machines. Therefore, supervisors should remind the employees in their group to patronize the cart—after all, it was leased for their convenience so that they would not have to walk over to the cafeteria on breaks."
Discuss how well reasoned ... etc.
翻译： 在我们的主要办公建筑的休息室内的提供饮料和食物的Coffee Cart流动车不能从销售中得到相应的收入去抵消支出。因此这个流动车可能被从GBS中取消。由于员工士气很低，这从离开公司的员工数量增加可以看出，取消这种服务可能带来问题，特别是员工士气调查显示了对零食贩卖机的广泛不满。因此，监督应该提醒组内的雇员给流动车付款，毕竟租借流动车是为了员工的方便，使他们不用在工休时走去自助餐厅。
分析：1.无因果联系，员工离开未必导致了公司士气低下。因为员工离开未必是一个负面的消息。比如一些不负责任员工的离职，对于其他员工来说可能是一个好消息，反而可能使得公司士气的上升。2.可疑调查，即使员工确实士气低落，这个调查未必能说明他们对零食贩卖机非常不满。因为这个调查既没有说明样本的数量，也没有说明样本的选择方法，所以可能有样本选择类的错误。那么其结论也未必有代表性。3.样本不足，即使让员工来赞助流动餐车能够解决问题，这一建议也未必是合理的。因为首先，这一措施会让员工感到不满，导致士气的进一步下降，而这未必是可以接受的;而其次，这一建议也未必是最佳的，可能有其他更好的方法来找到赞助人， 比如贴广告来找愿意承包这部餐车的人。
参考范文：
In this article the author concludes that supervisors should make sense to let employees to patronize the cart in ordet to continue its operation. To buttress his argument, the author reasons that increase in the number of employees leaving the company due to the loss of this service. Moreover, the author quotes the result of the staff morale questionnaire that the widespread dissatisfaction with the snack machines. In addition, the author reasons that the cart was leased for employees’ convenience. The author’s agrument seems to be solid and reasonable at the first sight, however, we can find out its illogical weaknesses if we look deeper into this argument. I will point out why the argument is problematic for several reasons.
In the first place, the author unfairly predicts that the low staff morale results from the loss of this service as an assumption. This is to say, the author cites that such two things coincide with each other. Yet we cannot readily come to the conclusion that the low staff morale and the loss of this service actually have causal relationship, as the evidence the author provides is not sufficient. It is entirely possible that more and more working pressure is an important causative factor in the low staff. Therefore, to eastablish the causal relationship between these events, it would be necessary for the author to exam and eliminate other possible factors that might accout for this phenomenon.
In the second place, the author quotes the result of the staff morale questionnaire to solidify his argument. But the methodology of this questionnaire is unstated. Furthermore, the representativeness of this questionnaire is open to doubt because the author fails to provide sufficient information to convince us. We can image that this investigation is conducted only in several special departments of this company, in which the employees are more likely to be low morale because special work circumstance and contents. For example, the more the employees receive complaints from clients, the lower their morale.
Finally, the author assumes that the operation of cart offers employees convenience. Still as far as I concerned, it is hasty to draw such a point. The majority of employees do consider a walk after several tight work hours not a hurdle but a good chance to relax.
In sum, based on two dubious assumptions and a doubtful quote, the agrument is unconvining. To strength the argument, author should to provide more detailed and sound information. Otherwise, supervisors will not accept his proposal to patronize the cart without further modified argument.
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