一道归纳题求助，如果我这么想的话，直接秒选？

JustL

一道归纳题

Finding of a survey of Systems magazine subscribers: Thirty percent of all merchandise orders placed by subscribers in response to advertisements in the magazine last year were placed by subscribers under age thirty-five.Finding of a survey of advertisers in Systems magazine: Most of the merchandise orders placed in response to advertisements in Systems last year were placed by people under age thirty-five.

For both of the findings to be accurate, which of the following must be true?

Which of the following would be most important to in order to evaluate the argument?"
A. More subscribers to Systems who have never ordered merchandise in response to advertisements in the magazine are age thirty-five or over than are under age thirty-five.
B. Among subscribers to Systems, the proportion who are under age thirty-five was considerably lower last year than it is now.
C. Most merchandise orders placed in response to advertisements in Systems last year were placed by Systems subscribers over age thirty-five.
D. Last year, the average dollar amount of merchandise orders placed was less for subscribers under age thirty-five than for those age thirty-five or over.
E. Last year many people who placed orders for merchandise in response to advertisements in Systems were not subscribers to the magazine.  

答案是E选
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我这么想的：
1. 第一个survey提到的是全部的订阅者订单和35岁以下订阅者的订单；（all of whom are subscribers ）

2. 第二个survey提到的则是全部的订单和35岁以下的人下的订单。( all of whom are buyers including subscribers and non-subscribers)

显然，全部的subscribers 所下的定单数要小于全部的buyers下的订单数，因为还有很多数量未知的non-subsrcibers也看了广告，并下了单。
比如： ①借阅朋友的Systems杂志，看到广告而下单的non subscribers
             ②在航班上读了飞机上赠约的Systems杂志的non subscribers
             ③在报刊亭翻阅了Systems杂志却没有买的non subscribers

等等这些情况都是没有订阅杂志，而却可以因为看到广告而下单的buyers



E 选的意思是【很多看到广告而下单的用户并不是杂志的订阅者】，措辞还不是Most，而是Many

那文章的那些数据根本不需要看啊，直接秒选E啊

因为有non subscribers的存在，就意味着肯定有非订阅者下单啊，文章E选也没说是most是非订阅者，那只要有一点点也算many了，数据都不用看了，直接E。


是我脑洞开太大还是这题有毛病？

JustL

这道题的问题就在于，只要认知到non-Subscribers也可以看到广告并下订单之后....

文章里所以噼里啪啦的数据都没有意义了，

因为E说的many people也不是majority of 这样的词，所以不是一两个人，就能算many people，那连数字都不用代入了，直接选E

JustL

spicytaco 发表于 2018-11-30 16:46
1. 第一个survey提到的是35岁以下订阅者的订单占全部的订阅者订单的30%；

2. 第二个survey提到的则是35岁 ...

问题就在这里，

一旦我们认可【非订阅者】的存在，这道题都没有分析的必要了，直接选E啊。

题目给的数据都没有必要分析了。

我知道E是正选，只是完全不用到题目给出的statistics，我有点方....

spicytaco

1. 第一个survey提到的是35岁以下订阅者的订单占全部的订阅者订单的30%；

2. 第二个survey提到的则是35岁以下的人下的订单占全部的订单的一半以上(most)

从30%如何到>50% ?

很多没有订阅的人下了单，而且大部分都是35岁一下的