首页
登录
职称英语
There were two widely divergent influences on the early development of stati
There were two widely divergent influences on the early development of stati
游客
2023-09-14
50
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 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. [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,为了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的形式,可见它们还是“可以理解的”;D“不可控制的”,与句意不符。故选B。
转载请注明原文地址:https://tihaiku.com/zcyy/3014486.html
相关试题推荐
ItisknowntousthatEnglishisnotasoldasChinese,butitiswidelyus
ItisknowntousthatEnglishisnotasoldasChinese,butitiswidelyus
Freud’sconceptsincluded______.[br]AccordingtoFreud’sdevelopmentalconcept
【B1】[br]【B16】A、followB、pursueC、traceD、chaseA所填词的宾语是developments,符合搭配要求的选项是
[originaltext]Heredityisnottheonlythingthatinfluencesourcolor.Whe
Thispassageismainlyaboutthedevelopmentandsafetyofrobots.[br]Mr.Angl
Thispassageismainlyaboutthedevelopmentandsafetyofrobots.[br]Accordin
Thispassageismainlyaboutthedevelopmentandsafetyofrobots.[br]Commonse
Thispassageismainlyaboutthedevelopmentandsafetyofrobots.[br]Research
Thispassageismainlyaboutthedevelopmentandsafetyofrobots.[br]TheSout
随机试题
Theharderyouwork,the______youget.A、moreB、manyC、muchA本题考查句型。the+比较级,the+
Thedeathwatchbeetleisthoughtofasthedevil’spestinchurchesandold
Themostversatile______embryonicstemcells,which______foundintheembryoat
ASimpleTruthaboutHappinessAfterIgaveatalkont
容量负荷过重见于A、高血压 B、肺动脉高压 C、肺动脉瓣狭窄 D、主动脉瓣
下列选项中,不属于场外交易市场的是()。A.中小板市场 B.区域性股权交易市
硫脲类药物最常见的不良反应是A:过敏反应 B:胃肠道反应 C:凝血功能障碍
高压蒸汽灭菌,欲杀灭带芽胞的细菌至少需A.蒸汽压力15~20lbf/in,温度1
()的产生和流通使实体货币与观念货币发生分离,真实货币演变成了虚拟货币。A:商品
女,25岁。3个月来乏力伴四肢关节痛、脱发。化验:Hb70g/L,N0.72
最新回复
(
0
)