In statistics, a sample is a subset of ___. A. the population B. a group C. people D. items 相关知识点: 试题来源: 解析 A。在统计学中,样本是总体的一部分。选项 A“the population”(总体)正确。选项 B“a group”(一组)不确切。选项 C“people”(人)太局限。选项 D“items”(物品...
结果1 题目 In statistics, a sample is a subset of a population. A sample should be ___ to represent the population accurately. A. large B. small C. random D. ordered 相关知识点: 试题来源: 解析 C。解析:在统计学中,样本应该是随机的才能准确地代表总体。 反馈 收藏 ...
A. population B. data set C. variable D. parameter 相关知识点: 试题来源: 解析 A。本题考查样本的概念。样本是总体的一部分。选项 B“data set”是数据集,样本是从总体中抽取的一部分,不是数据集的一部分。选项 C“variable”是变量,样本不是变量的一部分。选项 D“parameter”是参数,样本不是参数的...
A representative sample is a subset of a population that seeks to accurately reflect the characteristics of the larger group. For example, a classroom of 30 students with 15 males and 15 females could generate a representative sample that might include six students: three males and three females....
Sample statistics estimate the value of the population value. For example, the mean height of a subset of women can estimate the parameter. The estimate never equals the parameter exactly. Consequently, there is always a margin of error around sampleestimates. ...
What is the strength of the Internet Shop business? 2. What are the weaknesses of the Internet Premium Wi-Fi Internet Null hypothesis 852 Words 4 Pages Satisfactory Essays Read More Sample Set statistics‚ a sample is a subset of a population. Typically‚ the population is very ...
Sampled or Study population – The population from which the sample was chosen ? Sample – A subset of the population ? Observation/study units – We collect data on these units (objects or people) ? Sampling unit – Unit actually sampled (can be different from observation unit) – For ...
作者: Population and sample 摘要: Outline Population and Sample Population parameter and sample statistics Random sampling error, variance of sampling statistics. Central Limit Theorem and distribution of the samplestatistics z score and t score Confidence interval Hypothesis testingExperiment Here is a ...
PopulationOn the other hand, your population is the broader group of people to whom you intend to generalize the results of your study. Your sample will always be a subset of your population. Your exact population will depend on the scope of your study. For instance, say your research ...
Outline--AspectsofAspectsofSamplingSampling•Concepts–Definitions–Samplingmethods•Calculations–Samplesize3•Targetpopulation–Thecompletecollectionofobjectswewouldliketosaysomethingabout•SampledorStudypopulation–Thepopulationfromwhichthesamplewaschosen•Sample–Asubsetofthepopulation•Observation/studyunits–...