- 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...
A population in statistics is a whole group of people or objects from which samples are taken. It is the entire group that we are interested in, and it includes all of the members of the group [1].A population is the opposite of a sample, which is a fraction or percentage of a ...
A sample of n = 16 individuals is selected from a population with μ = 40 and σ = 12, and a treatment is administered to the sample. After treatment, the sample mean is M = 42. How does this sample compare to samples that should be obtained if the treatment has no effect? A.It...
Sample Group Explorable.com126.1K reads In statistics, a sample group can be defined as a subset of a population. The population, or target population, is the total population about which information is required. Ideally, this is a population at risk. The "study population" is the population...
Fig. 1: Sample overview and broad-scale genetic structure. a,b, Geographical (a) and temporal (b) distribution of the 317 ancient genomes sequenced and reported in this study. Insert shows dense sampling in Denmark34. The age and the geographical region of ancient individuals are indicated by...
Complex trait susceptibilities and population diversity in a sample of 4,145 Russians ArticleOpen access23 July 2024 Main Large biobank studies have become an important source of genetic discoveries. The FinnGen study aims to construct a resource that combines the power of nationwide biobanks, struct...
a我于上周六下午乘飞机抵达南京 I go by plane in last Saturday afternoon arrive at Nanjing[translate] acheck or miss me just now 正在翻译,请等待...[translate] aA set of measurements, called data, can be either a sample or a population. 正在翻译,请等待...[translate]...
Although such approaches may be more uncertain than traditional monitoring, the collection of information covering a larger sample size or an expanded chemical space can aid in identifying and quantifying exposures for highly exposed groups. Show moreView article Journal 2019, Current Opinion in ...
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 ...