stratifiedsampling

stratified sampling

中文翻译：

分层抽样

形容词含义：

1. 分层抽样的

名词含义：

1. 分层抽样法

词语辨析：

stratified sampling与random sampling的区别在于前者将总体划分为不同的层次，然后从每个层次中随机选择样本，而后者是完全随机选择样本。

词汇扩充：

1. random sampling：随机抽样

2. systematic sampling：系统抽样

3. cluster sampling：群集抽样

4. quota sampling：配额抽样

近义词：

systematic sampling, cluster sampling, quota sampling

反义词：

random sampling

柯林斯词典：

stratified sampling (noun)

A stratified sampling is a type of random sample in which a population is divided into different groups, each of which has similar characteristics, and then a random sample is taken from each group.

牛津词典：

stratified sampling (noun)

A method of sampling that involves dividing a population into smaller groups, or strata, and selecting samples from each group.

用法：

Stratified sampling is commonly used in research studies to ensure that the sample represents different subgroups of the population accurately.

相关例句：

1. The researchers used stratified sampling to ensure a representative sample of the population. (研究人员使用了分层抽样以确保样本能够代表总体。)
2. In this study, participants were selected through a stratified sampling method based on age and gender. (在这项研究中，参与者是根据年龄和性别通过分层抽样方法选择的。)
3. By using stratified sampling, the researchers were able to gather data from a diverse range of individuals. (通过使用分层抽样，研究人员能够从各种不同的个体中收集数据。)
4. The survey employed a stratified sampling technique to ensure representation from different geographic regions. (该调查采用了分层抽样技术，以确保来自不同地理区域的代表性。)
5. The study used stratified sampling to ensure an equal distribution of participants from different income brackets. (该研究使用分层抽样以确保来自不同收入档次的参与者的均等分布。)
6. The researchers divided the population into strata and then employed stratified sampling to select participants. (研究人员将总体划分为层次，然后采用分层抽样来选择参与者。)
7. Stratified sampling allows for a more accurate representation of the population compared to random sampling. (与随机抽样相比，分层抽样能够更准确地代表总体。)
8. By using stratified sampling, the researchers were able to control for potential confounding variables. (通过使用分层抽样，研究人员能够控制潜在的混杂变量。)
9. The survey employed a stratified sampling approach to ensure a balanced representation of different age groups. (该调查采用了分层抽样方法，以确保各个年龄组的平衡代表性。)
10. The researchers used stratified sampling to ensure that each subgroup of the population was represented in the sample. (研究人员使用分层抽样来确保样本中代表了总体的每个子群体。)
11. Stratified sampling is a useful technique for obtaining a representative sample from a large and diverse population. (分层抽样是从一个庞大而多样化的总体中获得代表性样本的一种有用技术。)
12. In order to ensure a diverse sample, the researchers used a stratified sampling method based on demographic factors. (为了确保样本的多样性，研究人员使用了基于人口统计因素的分层抽样方法。)
13. The study employed a stratified sampling technique to ensure an equal representation of different ethnic groups. (该研究采用了分层抽样技术，以确保不同族群的平等代表性。)
14. By using stratified sampling, the researchers were able to compare data from different age ranges. (通过使用分层抽样，研究人员能够比较不同年龄范围的数据。)
15. Stratified sampling was used to ensure an adequate representation of both urban and rural areas. (使用分层抽样以确保城市和农村地区得到充分的代表性。)
16. The researchers employed stratified sampling to select participants from various educational backgrounds. (研究人员采用分层抽样从不同的教育背景中选择参与者。)
17. Stratified sampling allows for a more precise estimation of population parameters. (分层抽样可以更精确地估计总体参数。)
18. The study used a stratified sampling design to ensure an equal representation of different socioeconomic groups. (该研究采用了分层抽样设计，以确保不同社会经济群体的平等代表性。)
19. The survey employed stratified sampling to ensure a balanced representation of different gender identities. (该调查采用了分层抽样以确保不同性别身份的平衡代表性。)
20. By using stratified sampling, the researchers were able to compare data from different geographical regions. (通过使用分层抽样，研究人员能够比较不同地理区域的数据。)