首页
登录
职称英语
There were two widely divergent influences on the early development of stat
There were two widely divergent influences on the early development of stat
游客
2023-11-22
9
管理
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. [br] The word "unwieldy" in the second paragraph is closest in meaning to ________.
选项
A、difficult to collect
B、difficult to tackle
C、incomprehensive
D、uncontrollable
答案
B
解析
第二段最后一句话“Large masses of data...the properties of an otherwise unwieldy mass of data.”的意思是说,大量的数据群必须要有一个总结或减收的过程,以从可能是乱七八糟的数据群中找出其特征,关键词是otherwise,表示前后有个对比。可见后面提及的unwieldy mass of data是难以处理的数据。再看四个选项:A“难以收集”,文章没有提收集;B“难以处理”,与上下文正好相符;C“不可理解的”,前面说将它们整理成容易理解
转载请注明原文地址:https://tihaiku.com/zcyy/3209089.html
相关试题推荐
PassageOneBullyingcanhaveharmfuleffectsonchildhooddevelopment,
PassageOneBullyingcanhaveharmfuleffectsonchildhooddevelopment,
PassageOneBullyingcanhaveharmfuleffectsonchildhooddevelopment,
PassageFour[br]Whatisthispassagemainlyabout?Thedevelopmentandfutu
Althoughthefirstyearisreallyimportantforlanguagedevelopmentinchi
Althoughthefirstyearisreallyimportantforlanguagedevelopmentinchi
Althoughthefirstyearisreallyimportantforlanguagedevelopmentinchi
Throughoutthenation’smorethan15,000schooldistricts,widelydiffering
Throughoutthenation’smorethan15,000schooldistricts,widelydiffering
Throughoutthenation’smorethan15,000schooldistricts,widelydiffering
随机试题
H此处需要谓语动词,由后一句中的killed可知该动词也要用过去式。句子的主语是newspaper“报纸”,宾语为agrowingnumberofsui
疾病早期常一眼先发病,流泪较多,伴有少量分泌物,同时可有结膜下出血的是()A:
血管性痴呆的定义下述有误的是A、可突然起病,呈波动进程 B、皮质下小血管病变
某混凝土试块强度值不满足规范要求,但经法定检测单位对混凝土实体强度经过法定检测后
新生儿复苏程序中“A”指<P>A.清理呼吸道<br>B.建立呼吸<br>C.维持
①历史学家曾经纠结于是否将采集狩猎时代写进历史,因为他们大多缺乏相应的研究技术,
(2022年真题)某工业园区社会工作者小王多年来扎根园区,为有需要的工友提供服务
教师违法(侵权)行为的主要类型有哪些?
公积金个人住房贷款的申请由商业银行自己审批。()
某厂一化工及危险品库房,建筑长X宽X高分别为12mX6mX6m’内储存有炸药、
最新回复
(
0
)