- We collected a sample of 100 participants for our study. (我们为研究收集了100名参与者的样本。)2. 代表性不同:- population:代表整个群体的特征和特点。- sample:试图代表总体的特征和特点,但可能存在抽样误差。例句:- The population of students in this university is diverse in terms...
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...
In market research, a sample that represents the entire population is called a ___. A. random sample B. representative sample C. convenience sample D. stratified sample 相关知识点: 试题来源: 解析 B。本题考查市场调研中的样本类型。选项 A“random sample”是随机样本;选项 B“representative sample...
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. the entire population B. a part of the population selected for study C. the data collected D. the method of data collection 相关知识点: 试题来源: 解析 B。本题考查“sample”在市场调研中的含义。选项 A 指的是全体人口,不符合“sample”的定义;选项 B 是从总体中选取的一部分用于研究,这正...
A valid statistic can be drawn from either a sample or a study of an entire population. The objective of a random sample is to avoid bias in the results. A sample is random when every member of the whole population has an equal chance to be selected to participate.1 ...
the pany might select a sample of the population. A sample is a *** aller group of members of a population selected to represent the population. In order to use statistics to learn things about the population the sample must be random. A random sample is one in which every ...
In general, results indicate that most sexual offenders do not reoffend sexually after release from prison. More detailed, within the first 5 years after release, the sexual recidivism rate was 6% for the total sample, 4% for the rapist subgroup, and 8% for the child molester subgroup. The...
The scope of this study was to assess the prevalence and factors associated with leisure-time physical activity, as well as to verify its association with licit substance use in a population sample of young adults. It is a cross-sectional population-based study with young adults aged between 18...