| 单词 | stratified sampling |
| 释义 | > as lemmasstratified sampling stratified sampling n. Statistics a method of sampling in which a sample from a heterogeneous population is obtained by dividing the population into homogeneous subgroups and taking a sample from each; cf. stratification n. 9.Stratified sampling is typically employed in order ensure that the sample obtained is representative of the population and to limit the effect of sampling error. ΚΠ 1927 Jrnl. Royal Statist. Soc. 90 373 The important case of stratified sampling is indeed given, but is not connected with any general outline of the very fundamental analysis of variation. 1955 Amer. Sociol. Rev. 20 701/1 This paper presents the results obtained from two distinct studies. Test No. 1 was a limited experiment based upon stratified sampling. 2008 D. J. Hand Statistics: Very Short Introd. iii. 53 This procedure is known as stratified sampling, since it divides the overall population listed in the sampling frame into strata. < as lemmas |
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