random sample发音 意思翻译 [数]随机样本;随意抽取调查;[天]随机样品 n.随机抽样调查 相似词语短语 random samples───[数]随机样本;随意抽取调查;[天]随机样品 random sampling───[数]随机抽样;随意采样 random samplings───[数]随机抽样;随意采样 ...
a这双鞋子很漂亮 正在翻译,请等待...[translate] aSelecting a sample: 选择样品:[translate] a• Inferential statistics requires random samples • 推理统计要求随意抽样[translate] athe sample. Random sampling is a strictly 样品。 随意抽样严密地是a[translate]...
simple random sampling:A sample of n subjects is selected in such a way that every possible sample of the same size n has the same chance of being chosen 相关知识点: 试题来源: 解析 简单随机抽样:由N个个体组成的样本,每个个体都是从具有相同样本容量N和相同几率被抽取的样本中选出 ...
样本Sampling Crayon 本科在读,随心记8 人赞同了该文章 总体(Population) 关系: ( target population ( study population (sample) ) ) 总体N 样本n, 那么最大样本是N-1 Sample Steps: Sample frame 抽样框 (是抽样操作依据的名单,是和调查的总体相对应) simple random sampling 简单随机抽样 特点:每一个等概...
items selected at random from a population and used to test hypotheses about the population 同义词：sample distribution, sampling all or part of a natural object that is collected and preserved as an example of its class 动词 sample:take a sample of 同义词：try, try out, taste ...
random.sample(population, k) Return a k length list of unique elements chosen from the population sequence. Used for random sampling without replacement. 上面的document并不完整,不过也可以看出,是从序列(sequence)中随机选择k个元素,返回的是一个新的list,原来的序列不受影响。
2. We need to take a sample of your blood for testing.我们需要取您的血样进行测试。3. The company is sampling its new range of ice creams.这家公司正在抽样试吃它的新系列冰淇淋。4. A random sample of people was selected for the survey.随机选择了一些人进行调查。5. We sampled ...
R语言使用sample函数采样dataframe数据行(sampling)、设置抽样个数、有放回抽样模式 # take a random sample of size 50 from a dataset mydata # sample without replacement mysample <- long[sample(1:nrow(long), 5, replace=TRUE),] mysample 安利一个R语言的优秀博主及其CSDN专栏: 博主博客地...
This alone, however, is not enough to make the sampling bias negligible. Combining therandom samplingtechnique with the representative sampling method reduces bias further because no specific member of the representative population has a greater chance of selection into the sample than an...