请教一题cr

ligan

不明白怎么解这题，求nn答疑~

in a survey of consumers in an Eastern European nation, respondents were asked two questions about each of 400famous Western brands:whether of not they recognized the brand name and whether or not they thought the products bearing that name were of high quality.The results of the brand based on recognition,and a second rating-plus-ranking based on approval.The brands ranked in the top27for recognition were those actually available in the nation.The approval rankings for these 27brands often differed sharply from their recognition rankings.By contrast, most of the other brands had ratings, and thus rankings, that were essentially the same for recognition as for approval.

Which of the following, if each if a principle about consumer surveys, is violated by the survey described?

a. Never ask all respondents a question if it cannot reasonably be answered by respondents who make a particular response tp another question in the same survey.

b.Never ask a question that is likely to generate a large variety of reponses that are difficult to group into a amanageable number of categories.

c.Never ask all respondents a question that respondents cannot answer without giving up their anonymity.

d.It is better to ask the same question about ten different products than to ask ten different questions about a single product.

e.It is better to ask questions that a respondent can answer without fear of having gotten the answer wrong.

(key:a)

yangfan8587

a选项说 如果调查者们对第一个问题的一个特定回答，会使对第二个问题的回答无效，则这第二个问题不应该对这部分调查者提出

第一个问题是 听没听说过该品牌 第二个问题是 该品牌质量如何

原文说，这2个问题对所有的调查者都提出了。这样对于27个在本国有的商品 有很多人听说过或者尝过，所以名气和质量不是很一致

但是对于其他那些本国没有的品牌，人们都没听说过，这样导致他们一致的按这些商品的名气给出质量的排名。（对第一个问题的特定回答“没听说过”导致对第二个问题的回答不合理。“一致按名气给出质量的排名”

所以造成了前27种商品不一致，其他商品的都一致。