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
2013-01-25
38
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 modem descriptive statistics. From the influence of the father came modem 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 variable, such as sex, college major, or personality type.
Large masses of data must generally undergo a process of summarization or reduction before they are comprehensible. Descriptive statistics is tool for describing or summarizing or reducing to comprehensible 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 knowledge of the characteristics of only a sample of the population.
Which of the following are counting and describing associated with?
选项
A、Descriptive statistics
B、Unknown variables
C、Qualitative changes
D、Inferential statistics
答案
A
解析
由文章第一段中“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 modem descriptive statistics.”可以得到答案。
转载请注明原文地址:https://kaotiyun.com/show/9J1O777K
0
考博英语
相关试题推荐
Apparentlyfirstdescribedin1964,transientglobalamnesiaconsistsofa(n)abruptlossofmemorylastingfromafewsecondsto
Thewidelypublicizeddemonstrationdidnotafterall____.
Inhislecture,theeducationexpertemphasizedthefactthatnowadayschildrenareexposedtomanyinfluences_____thatoftheir
Likemanyofmygeneration,Ihaveaweaknessforheroworship.Atsomepoint,however,wealltoquestionourheroesandourne
Duringthenormaldevelopmentofself,achildisaffectedbycertaininfluentialfactors.(1)Infantsformanattachmentwitht
Duringthenormaldevelopmentofself,achildisaffectedbycertaininfluentialfactors.(1)Infantsformanattachmentwitht
Duringthenormaldevelopmentofself,achildisaffectedbycertaininfluentialfactors.(1)Infantsformanattachmentwitht
Thereweretwowidelydivergentinfluencesontheearlydevelopmentofstatisticalmethods.Statisticshadamotherwhowasdedi
随机试题
流溪市人民政府为确保其辖区的夏莲水库修复工程如期竣工,发布如下文件:本区凡有劳动能力者除在校学生外,都必须上堤参加水利修复工程。每一劳动力缺工一天,罚款50元。流溪市水利局以此文件为依据,对不参加工程劳动的农民张某罚款300元。问:本案中,如果张某不
统一战线的根本问题是()
预防婴儿佝偻病,护士指导家长每天给婴儿口服维生素D的剂量是
正常人的开口度为
反映均数抽样误差大小的指标是
通电干燥法包括()。
在制定工作目标时,下列说法错误的是()。(2004年6月二级真题)
我国邻省最多的省级行政单位是()。
设二次型f(x1,x2,x3)=5x12+ax22+3x32一2x1x2+6x1x3一6x2x3的矩阵合同于求常数a;
SupposeyouaretoinviteMr.andMrs.Browntoyourparty.Thefollowsshouldheincludedthereasonsofinvitation,timeandloca
最新回复
(
0
)