1调查问题.doc

1、11.The mayor provides no evidence that the surveys respondents are representative of the overall group of people whose. 被调查者的代表性Lacking such evidence, it is entirely possible that people inclined to . were more willing to respond to the survey than other people were. In short, without better evidenc

2、e that the survey is statistically reliable调查的统计是可靠的 the mayor cannot rely on it to draw any firm conclusions about.28. The number of participants, 100, might constitute an insufficiently small sample to draw any reliable conclusions about.Also, the sample might be unrepresentative of district studn

3、ets as a group.142.The author provides no evidence that the studys results are statistically reliable. In order to establish a strong correlation between dietary iron and heart diseases, the studys sample must be sufficient in size样本大小 and representative of the overall population of样本代表性 heart-disea

4、se victims.Lacking evidence of a sufficiently representative sample, the author cannot justifiably rely on the study to draw any conclusion whatsoever.144.The authors conclusions about.depend on the assumption that the poll results are statistically reliable. Yet, the author offers no evidence to su

5、bstantiate this assumption.The author must show that . polled constitute a sufficiently large sample of .样本大小, and this sample is representative of all such .代表性Otherwise, the author cannot confidently draw any general conclusions about.158.The Council has not convinced me that . in the survey are r

6、epresentative of .in terms of .It is entirely possible that.The 300 people in the study are not necessarily representative of the states general populationin terms of . For example, perhaps.Or perhaps. In short, lacking evidence that. the Council cannot convince me that.174.The memo provides no evid

7、ence that the results of either of the two surveys are statistically reliable.Besides, the memo provides no information about what percentage of . responded to the surveys参加调查的人数比例，也是样本大小; the lower the percentages, the less reliable the results of the surveys.181.A final problem with the argument i

8、nvolves the two studies themselves. The letter provides no information about how either study was conducted调查是如何进行的. Without konwing whether the sample of . was representative of代表性 the overall . population ., it is impossible to confidently apply the studies results to that population.Moreover, we

9、are not informed about the size of the sample样本大小 in either study; the smaller the sample, the less reliable the studys conclusion.186.A threshold problem with the argument involves the statistical reliability of the survey.The director provides no evidence that the number of respondents is statisti

10、cally significant 样本大小or that the respondents were representative of . in general代表性.Lacking information about the randomness and size of the surveys sample, the director cannot make a convincing argument based on that survey.Even if the surveys respondents are representative of the entire populatio

11、n of ., the argument relies on the assumption that the responses themselves are reliable被调查者的可信性. Yet the director ignores the possiblility that.Lacking evidence that the respondents reports were both truthful and meaningful, the director cannot confidently draw any conclusions about .from them.188.

12、One problem with the argument is that since the study involved only 48 people it is impossible to confidently draw any conclusions about the general population from it.201.The survey must be shown to be reliable before I can accept any conclusions based upon it. Specifically, the responses must be a

13、ccurate, and the respondents must be statistically significant in number and representative of the overall 样本大小和代表性. in terms of .Without evidence of the surveys reliablity, it is impossible to draw any firm conclucions about . based on the survey.220.The articles author has not shown the study upon

14、 which the argument denpends to be statistically reliable.The people studied must be representative of the overall population of people who.; otherwise the author cannot draw any firm conclusions about . based on the studys results.221.The survey that the argument cites is potentially problematic in

15、 three respects.First, we are not informed whether the surveys respondents were representative of the overall population of . The smaller the sample, the greater the possiblity for biased results, and the less reliable the survey.Second, . ; yet it is entirely possible that.Third, we are not informed that .; however, if. , then the survey results would be less reliable than if the survey embraced a wider range of .The smaller the range the less reliable any general conclusions drawn from the survey.