首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
There were two widely divergent influences on the early development of statistical methods. Statistics had a mother who was dedi
There were two widely divergent influences on the early development of statistical methods. Statistics had a mother who was dedi
admin
2010-01-26
16
问题
There were two widely divergent influences on the early development of statistical methods. Statistics had a mother who was dedicated to keeping orderly records of governmental units (state and statistics come from the same Latin root, status) and a gentlemanly gambling father who relied on mathematics to increase his skill at playing the odds in games of chance. The influence of the mother on the offspring, statistics, is represented by counting, measuring, describing, tabulating, ordering, and the taking of censuses all of which led to modern descriptive statistics. From the influence of the father came modern inferential statistics, which is based squarely on theories of probability.
Descriptive statistics involves tabulating, depicting, and describing collections of data. These data may be either quantitative,such as measures of height, intelligence, or grade level variables that are characterized by an underlying continuum-or the data may represent qualitative variables, such as sex, college major, or personality type. Large masses of data must generally undergo a process of summarization or reducing to comprehensibly form the properties of an otherwise unwieldy mass of data.
Inferential statistics is a formalized body of methods for solving another class of problems that present great difficulties for the unaided human mind. This general class of problems characteristically involves attempts to make predictions using a sample of observations. For example, a school superintendent wishes to determine the proportion of children in a large school system who come to school without breakfast, have been vaccinated for flu, or whatever. Having a little knowledge of statistics, the superintendent would know that it is unnecessary and inefficiency to question each child; the proportion for the entire district could be estimated fairly accurately from a sample of as few as 100 children. Thus, the purpose of inferential statistics is to predict or estimate characteristics of a population from a knowledge of the characteristics of only a sample of the population.
What is the passage mainly concerned with?
选项
A、Development and application of statistics.
B、Origin of descriptive statistics.
C、Limitations of inferential statistics.
D、Importance of statistics.
答案
A
解析
首先细想一下全文的内容概要,再看四个选项:A“统计学的发展与应用”,正是文章所讲的主要内容;B“描述性统计”的起源,只说了文章中很小的一个方面;C“推理统计方法的局限性”,文章中没有提及;D“统计的重要性”,不是本文的重点。综合比较,A正确。
转载请注明原文地址:https://kaotiyun.com/show/eDdK777K
0
大学英语六级
相关试题推荐
ItisknowntousthatEnglishisnotasoldasChinese,butitiswidelyusedbymostpeopleallovertheworld.Englishspeake
Thefather_______________________________(哀求)hissontobelesstroubletohismother.
Whatisthepassagemainlyconcerned?AccordingtothePassage,whatcontributedtothedevelopmentofrealestate?
Chinahasoutlinedanewapproachtoforeigninvestment,withplannerssayingtheywillnowfocuslessonattractinglargeamoun
Chinahasoutlinedanewapproachtoforeigninvestment,withplannerssayingtheywillnowfocuslessonattractinglargeamoun
Chinahasoutlinedanewapproachtoforeigninvestment,withplannerssayingtheywillnowfocuslessonattractinglargeamoun
Chinahasoutlinedanewapproachtoforeigninvestment,withplannerssayingtheywillnowfocuslessonattractinglargeamoun
随机试题
肾小球有效滤过压(glomerulareffectivefiltrationpressure)
女,56岁。昏迷5小时,轻度黄疸,口有腥臭味,双侧肢体肌张力对称性增高,瞳孔等大。尿蛋白及尿糖均阴性,A/G=25/35。最有可能的诊断是()
下述哪些是正反馈的特点
休克型肺炎病人取
公安机关拘留人的时候,必须出示《拘留证》。拘留后,除有碍侦查或者无法通知的情形以外,应当在(),把拘留的原因和羁押的处所通知被拘留人的家属或者他的所在单位。
学生主体性的形成,既是教育的目的,也是教育成功的()。
杜某生了一对双胞胎,某县计生办根据省政府以省长令发布的《计划生育管理条例》的规定,以超生为由对其作出罚款3000元的处罚决定。以下说法错误的是()。
针对2022年冬奥会,区教育局计划组织某小学的学生开展知识竞赛活动。如果你是该教育局的工作人员,领导让你来负责这项工作,你会怎么组织?
论述唐玄宗时期军事制度的主要变化及其影响。
Whatisthenewsmainlyabout?
最新回复
(
0
)