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			    <title>lhx3260153的个人空间</title>
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			    <copyright>Copyright(C) lhx3260153的个人空间</copyright>
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			    <lastBuildDate>Sun, 23 Nov 2008 18:27:45 UTC</lastBuildDate><item>
								<title>关于样本量的计算</title>
								<link>http://my.6sq.net/?uid-78018-action-viewspace-itemid-36336</link>
								<description><![CDATA[这两天看到了很朋友在问样本量大小的计算问题，在这里学习下O大师，也把这些问题归纳下，希望能够对大家有点帮助，要是有不详尽的地方我将继续完善，也望各位大师给予补充，谢谢！<BR>1、什么是抽样，为什么要抽样？<BR>&nbsp; &nbsp; 1）抽样是：<BR>&nbsp; &nbsp;&nbsp;...]]></description>
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								<author>lhx3260153</author>
								<pubDate>Wed, 28 May 2008 10:06:28 UTC</pubDate>
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