请教argument161提纲

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In a study of reading habits of Leeville citizens conducted by the University of Leeville, most respondents said they preferred literary classics as reading material. However, a follow-up study conducted by the same researchers found that the type of book most frequently checked out of each of the public libraries in Leeville was the mystery novel. Therefore, it can be concluded that the respondents in the first study had misrepresented their reading habits.
我准备的提纲是：
1.两次调查的可靠性有问题:
    1)两次调查的样本数量，代表性
  2)两次调查可能间隔太久
2.即使调查本身没问题，也不能说明结论
  1)看古典文学的都是买了看， 或者上网看
  2)图书馆只有神秘小说
3.这两类小说可能是一样的
  Odessey  Greek Mythology
请问这样写可以吗？有什么漏掉的？尤其是第三点可以写吗？