| 单词 | stratified sample |
| 例句 | Those numbers picked from the first year, picked from the second year, and so on represent the students who make up the stratified sample. High School Statistics 2020-03-27T00:00:00Z Other well-known random sampling methods are the stratified sample, the cluster sample, and the systematic sample. Introductory Statistics 2013-09-19T00:00:00Z Taking Part uses a proper randomised, stratified sample of households visited by trained interviewers. Letters: Conflicting data on sports participation 2011-04-05T23:05:03Z To choose a stratified sample, divide the population into groups called strata and then take a proportionate number from each stratum. Introductory Statistics 2013-09-19T00:00:00Z Those numbers picked from the first department, picked from the second department, and so on represent the members who make up the stratified sample. Introductory Statistics 2013-09-19T00:00:00Z These 18 quiz scores are a stratified sample. Introductory Statistics 2013-09-19T00:00:00Z |
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