天堂国产午夜亚洲专区-少妇人妻综合久久蜜臀-国产成人户外露出视频在线-国产91传媒一区二区三区

當(dāng)前位置:主頁 > 論文百科 > 論文寫作 >

科技論文寫作常識——抽樣方法

發(fā)布時間:2019-01-08 12:44
【摘要】:正概率抽樣(probability sampling):也稱"隨機抽樣"(random sampling)。其特點是每個被抽取的個體都有相同的機會被抽中。具體的概率抽樣方法包括簡單隨機抽樣、分層抽樣、集束抽樣和系統(tǒng)抽樣。非概率抽樣(non-probability sampling):也稱"非隨機抽樣"或"不等概率抽樣",指沒有采用隨機抽樣方法而選取樣本的方法。
[Abstract]:Positive probability sampling (probability sampling):, also known as "random sampling" (random sampling). The feature is that each individual being drawn has the same chance of being drawn. Specific probability sampling methods include simple random sampling, stratified sampling, cluster sampling and systematic sampling. Non-probabilistic sampling (non-probability sampling):), also known as "non-random sampling" or "unequal probability sampling", refers to the method of selecting samples without random sampling.
【分類號】:R-5
,

本文編號:2404615

資料下載
論文發(fā)表

本文鏈接:http://www.sikaile.net/wenshubaike/ziwotuijianshu/2404615.html


Copyright(c)文論論文網(wǎng)All Rights Reserved | 網(wǎng)站地圖 |

版權(quán)申明:資料由用戶d004a***提供,本站僅收錄摘要或目錄,作者需要刪除請E-mail郵箱bigeng88@qq.com