共 4 条
- [2] Cochran W.G., 2007, SAMPLING TECHNIQUES
- [3] On the two different aspects of the representative method: The method of stratified sampling and the method of purposive selection. [J]. JOURNAL OF THE ROYAL STATISTICAL SOCIETY, 1934, 97 : 558 - 625
- [4] ALLOCATION OF SAMPLE-SIZE TO STRATA AND RELATED PROBLEMS [J]. BIOMETRICAL JOURNAL, 1984, 26 (05) : 517 - 526