抽样调查中样本量的科学确定-时涛

*时涛(,271016):抽样调查;样本量;科学确定:R181:B:10047115(2010)070531031790,,,,2000[1],,,,;,,,11.1,,,,,,(1),,;,(2),;,(3),(4),,(5)()????,1.2:,,,,,1.2.1,,,,,,,,531JOURNALOFTAISHANMEDICALCOLLEGEVol31No72010*:时涛(1981),男,山东济南人,硕士,讲师,主要从事统计学教学和市场调查数据挖掘研究工作,,,,,,,,,(),,P=0.5,,,,,,1.2.2,,,表1总体大小与所需样本量(P=0.5)总体样本量5044100805002221000286500037010000386100000398100000040010000000400195%,005,P,(P=0.5)1,,,50,44,,N=5000,n=400,P=0.5,4005000,,,,1.2.3,,,,,,,,,,,,,,,,,,1;,1;,1,,1.2.4:;,();,532JOURNALOFTAISHANMEDICALCOLLEGEVol31No72010,,,400,60%,:n=400/0.60=667,,,,,1936!,2100%,,,,():X=(1-n/N)^n^[2]:!X=tX=t(1-n/N)^nn:n=t2^2!X2+t2^2Nn,!XtN^2,,p,p(1-p)p,;p=0.5,,,B,100%,r,,,,,,,,,:;:[1]戴维S穆尔.统计学的世界[M].北京:中信出版社,2003:96.[2]冯士雍.抽样调查理论与方法[M].北京:中国统计出版社,1999:24.(20100412)533JOURNALOFTAISHANMEDICALCOLLEGEVol31No72010