“Advertising the reduced price of selected grocery items in the Daily Gazette will
help you increase your sales. Consider the results of a study conducted last month.
Thirty sale items from a store in downtown Marston were advertised in the Gazette
for four days. Each time one or more of the 30 items was purchased, clerks asked whether the shopper had read the ad. Two-thirds of the 200 shoppers asked answered in the affirmative. Furthermore, more than half the customers who answered in the affirmative spent over $100 at the store.”
Discuss how well reasoned... etc.In this argument, the author asserts that advertising the reduced price of selected grocery items in the Daily Gazette will help grocery stores in Marston area increase their sales. To substantiate this conclusion, the author cites the results of a study conducted last month showing that thirty sale items from a store in downtown Marston advertised in Gazette for four days, and clerks asked whether the shopper had read the ad each time one or more of the thirty items was purchase. Tow-thirds of the 200 shoppers asked answered in the affirmative, and more than half the customers who answered in the affirmative spent over $100 at the store. At first glance, the author’s argument appears to be somewhat convincing, but close scrutiny reveals that the line of reasoning employed is invalid and hence the conclusion is probably misleading due to several critical logic flaws. In short, the author’s analysis does not lend strong support to the author’s claim, and lack of credibility in reasoning makes the conclusion problematic.
First, the method of conducting the study commits several mistakes. In the study, clerks from the store asked to shopper that they had read the ad when a shopper purchased each time one or more of the 30 items. However, this question violates the essential virtue of survey, neutrality of questionnaire. Thus, this study as a whole loses credibility to represent the effect of advertising in Gazette. To gain confidence of the study, therefore make the conclusion more convincing, the study should construct the questionnaire obeying the neutrality. For example, rather than asking whether a shopper had read the ad, asking what makes a shopper choose the item brings more credibility in the study.
Second, the author omits to recognize that the sample from the study can not represent the population. Scilicet, the size of the sample is too small to generalize. In the study, only 200 shoppers were asked about the ad, and among them, roughly 133 customers affirmative about the ad. Furthermore, approximately 67 customers among them spent over $100 at the store. However, this evidence is questionable, since the study does not offer absolute number of total customers to evaluate validity. Knowing that this study had conducted for four days, I infer total number of customers who visited a store for four days would be much higher than 200 customer. Even though the number counts near 200, this study suffers from lack of the number of samples. Therefore, in every aspects, this study has failed to lend strong buttress to the author’s claim.
To sum up, the author fails to provide adequate justification for the argument. The premise cited is not only incomplete but also dubious. Therefore, to support the conclusion of the argument more logically convincing, the author should include the above-mentioned assumptions as additional evidence. If so, the argument would be much more persuasive.
Thank you so much !