【单选题】【消耗次数:1】
A country ________ birth rate is higher than its death rate will have an increasing population.
who
which
whose
where
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相关题目
【单选题】 The birth rate of the country decreases ______ with years.
①  extremely
②  approximately
③  progressively
【单选题】 The city ____ its birth-rate by almost 60% in the past 20 years.
①  cuts
②  has been cut
③  cut
④  has cut
【单选题】 The city ______ its birth-rate by almost 60% in the past 20 years.
①  cuts
②  has been cut
③  cut
④  has cut
【单选题】 39. A survey was carried out on the death rate of those who were infected by SARS, ________were surprising.
①  asresults
②  whichresults
③  theresultsofit
④  theresultsofwhich
【单选题】 There is a sharp drop[填空] birth rate in this area.
①  from
②  of
③  with
④  over
【单选题】 A survey was carried out on the death rate of new born babies in that region,________were surprising.
①  as results
②  which results
③  the results of it
④  the results of which
【单选题】 A culture in which the citizens share similar religious beliefs and values is more likely to have laws that represent the wishes of its people than where citizens come from _________ backgrounds.
①  identical
②  dramatic
③  extensive
④  diverse
【单选题】 17. A survey was carried out on the death rate of new-born babies in that region, ____were surprising.
①  as results
②  which results
③  the results of it
④  the results of which
【单选题】 6.All this is highly ______ for those who worried a year ago that the country would have difficulty rebuilding its economy.
①  recalling
②  reassuring
③  reminding
④  removing
【单选题】 By the middle of the 21st century, the vast majority of the world’s population ____ in cities rather than in the country.
①  are living
②  will be living
③  have lived
④  will have lived
随机题目
【判断题】 总体参数区间估计必须具备的三个要素是估计值、抽样误差范围、概率保证程度。
①  正确
②  错误
【多选题】 判定现象之间有无相关关系的方法是( )。
①  对客观现象作定性分析
②  编制相关表
③  绘制相关图
④  计算相关系数
⑤  计算估计标准误
【单选题】 对某行业职工收入情况进行抽样调查,得知其中80%的职工收入在800元以下,抽样平均误差为2%,当概率为95.45%时,该行业职工收入在800元以下所占比重是( )。
①  等于78%
②  大于84%
③  在此76%与84%之间
④  小于76%
【判断题】 抽样推断是利用样本资料对总体的数量特征进行的一种统计分析方法,因此不可避免的会产生误差, 这种误差的大小是不能进行控制的。
①  正确
②  错误
【判断题】 抽样误差即代表性误差和登记误差,这两种误差都是不可避免的。
①  正确
②  错误
【多选题】 影响抽样误差大小的因素有( )。
①  抽样调查的组织形式
②  抽取样本单位的方法
③  总体被研究标志的变异程度
④  抽取样本单位数的多少
⑤  总体被研究标志的属性
【多选题】 在抽样推断中( )。
①  抽样指标的数值不是唯一的
②  总体指标是一个随机变量
③  可能抽取许多个样本
④  统计量是样本变量的涵数
⑤  全及指标又称为统计量
【多选题】 相关分析特点有( )。
①  两变量不是对等的
②  两变量只能算出一个相关系数
③  相关系数有正负号
④  两变量都是随机的
⑤  相关系数的绝对值介于0和1之间
【单选题】 反映样本指标与总体指标之间的平均误差程度的指标是( )。
①  抽样误差系数
②  概率度@抽样平均误差
③  抽样极限误差
【单选题】 如果变量x 和变量y 之间的相关系数为-1,说明两个变量之间是( ) 。
①  高度相关关系
②  完全相关关系
③  完全不相关
④  低度相关关系