[請益] 請各位幫我解吧~拜託

[cdg ()]

1.which of the following is an example of nonsampling error?
 a.Errors that arise from the recording of incorrect responses.
 b.Errors that arise when responses are not obtained from some members of the
   sample.
 c.Errors that arise when some members of the target population cannot
   possibly be slected in the sample.
 d.All of the above are examples of nonsampling errors.


2.Which statistical technique is appropriate when we compare two populations
  of qualitative data with exactly  two categories?
 a.Z-test of the difference between two proportions.
 b.The chi-squared test of a contingency table.
 c.The chi-squared test of goodness-of-fit
 d.Both a and b
 e.Both a and c

3.The adjusted multiple coefficient of determination is adjusted for the:
 a.number of regression parameters including the y-intercept
 b.number of dependent variables and the sample size
 c.number of independent variables and the sample size
 d.coeffcient of correlation and the significance level


請各位同學或是學長姐知道的幫小弟我解一下~
感恩不盡~

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推 zennage:抱歉...
推 cdg:一題都不會嗎?
推 beyondcloud:這個故事告訴我們  要學好統計 先學好英文
推 zennage:可是我看的懂英文看不懂統計
推 starmaple929:第一題是a吧
推 w2570:懶得看...
推 starmaple929:原來我猜錯了~= =