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
2010-01-10
81
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 continuumor the data may represent qualitative variables, such as sex, college major, or personality typo. 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 inefficient 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.
Describing and tabulating are associated with ________.
选项
A、inferential statistics
B、descriptive statistics
C、theories of probability
D、inefficiency of counting
答案
B
解析
从文章的第二段可以得知,描述和列表是描述性统计方法的两种形式。再看四个选项。A“推理性统计”,没有任何关系;B“描述性统计”,正好相关;C((可能性理论”,从第一段末可知,该理论是用于推理性统计的;D“计算的无效”,与文章内容不符。
转载请注明原文地址:https://kaotiyun.com/show/pv6K777K
0
专业英语四级
相关试题推荐
Chinesevisitorsarereceivedwithmixedfeelingsbyoverseasdestinations.Ontheonehand,Chinesevisitorsarethelargestpo
TheNationalTourismAdministrationhasrecentlyissuedadocumenttosupportthelegalizationoftipsinthetourismindustryi
AsquotedinTuesdayswithMorriebyMitchAlbom,whatiswrongwithbeingnumbertwo?Nevertheless,underthecompetitivecondi
(1)Mymother’shandsaredeepincabbageleaves,hersleevespusheduppastherelbows,asshesiftsthroughwater,salt,andve
(1)Wasthesummitasuccess?Itdependsonthestandardsyouusetomeasureit.CertainlybythestandardsofpreviousG8summit
(1)Formultinationalcorporations,taxplanninghasbecomeanextremelycomplexaffair.Ithasoftenbeenstatedthatnomultina
(1)DirectorsofOccidentalPetroleumCorp.wanttokeepChiefExecutiveRayR.Iranisafe.Sotheyspent$774,756lastyearonh
(1)TheParis-basedInternationalEnergyAgency(IEA),initsannualforecast,saidanumberoffactors,includingthesoaringcos
ThefollowingtwoexcerptsareabouthukoureforminChina.LikeaninternalpassportforChinesecitizens,theoldhukousystem
Whenhebentdowntotiehisshoelace,thebeltofhistrousers______.
随机试题
(2011年4月)实行按劳分配的重要前提条件是_________。
列宁说:“一切民族都将走向社会主义,这是不可避免的,但是一切民族的走法却不完全一样,在民主的这种或那种形式上,在无产阶级专政的这种或那种形态上……每个民族都会有自己的特点。”这就是说()
左房室瓣位于
患者女性,29岁。便秘多年,反复发作尿路感染,多次中段尿培养为大肠埃希菌生长。尿常规示白细胞5~10个/HP,红细胞3~5个/HP,尿渗透压下降,临床诊断为慢性肾盂肾炎,已治疗。下列哪项不具有预防复发的意义
了解胎儿成熟度最常用的检查项目是
在此情况下,于某能否直接提起行政诉讼?为什么?如果复议机关改变原纳税决定,由厂方缴纳税款,厂方不服,欲提起诉讼,厂方与于某的诉讼地位应如何确定?
【背景资料】某建筑空调工程中的冷热源主要设备由某施工单位吊装就位,设备需吊装到地下一层(-7.500),再牵引至冷冻机房和锅炉房就位。施工单位依据吊装设备一览表(见下表)及施工现场条件(混凝土地坪)等技术参数进行分析、比较,制订了设备吊装施工方案
暗示是一种非常重要的技巧,通过提供一些虚假信息或____,或者通过精密的____技巧,可以轻易地改变一个人对事件的回忆。这种事情在法庭案件中尤其常见。依次填入划横线部分最恰当的一项是()。
=________.
Manystudentsfindtheexperienceofattendinguniversitylecturestobeaconfusingandfrustratingexperience.Thelecturersp
最新回复
(
0
)