已选分类
管理学工商管理
单选题如果箱线图中中位数的位置在右侧，则数据的分布为 A．右偏分布 B．左偏分布 C．正态分布 D．对称分布
单选题Inthefigureabove,acircleisinscribedinasquarewithsidebandasquarewithsideaisinscribedinthecircle.Whatistheareaofthesquarewithsideb?(1)a=4(2)Theradiusofthecircleis.
单选题若n=20，∑x=200，∑x2=2080，则标准差为( )。 A．2 B．4 C．1.5 D．3
单选题以下属于纵向并购的优点的是（ ）
单选题Thefunction*isdefinedbytheequation,wherea≠b.Whichofthefollowinghasavalueof3?
单选题五数中不包括( )。 A．最小值 B．第一四分位数 C．中位数 D．平均数
单选题The market value of a certain machine decreased by 30 percent of its purchase price each year. If the machine was purchased in 1982 for its market value of $8,000, what was its market value two years later? (A) $8,000 (B) $5,600 (C) $3,200 (D) $2,400 (E) $800
单选题编制数量指标指数时一般应以( )作同度量因素。 A．报告期的质量指标 B．基期的质量指标 C．报告期的数量指标 D．基期的数量指标
单选题绘制茎叶图的关键是 A．设计好树茎 B．设计好树叶 C．统计数据个数 D．保留原始数据
单选题What is the least number of digits (including repetitions) needed to express 10100 in decimal notation?
单选题要研究某市工业企业生产设备使用情况，总体是( )。 A．该市全部工业企业 B．该市全部工业企业每一台设备 C．该市每个工业企业 D．该市工业企业的全部生产设备
单选题已知各期环比增长速度为2/%、5/%、8/%和7/%，则相应的定基增长速度的计算方法为( )。 A．(120/%×105/%×108/%×107/%)-100/% B．102/%×105/%×108/%×107/% C．2/%×5/%×8/%×7/% D．(2/%×5/%×8/%×7/%)-100/%
单选题Erica has $460 in 5-and 10-dollar bills only. If she has fewer 10-than 5-dollar bills, what is the least possible number of 5-dollar bills she could have? (A) 32 (B) 30 (C) 29 (D) 28 (E) 27
单选题次数分配的“数”指的是( )。 A．各个组别 B．各组次数 C．各组时间顺序 D．各组指标数值
单选题已知线性回归方程的判定系数为0.81，那么，线性相关系数为( )。 A．0.9 B．-0.9 C．0.9或-0.9 D．无法计算
单选题下列各项中，应采用加权算术平均法计算的有( )。 A．已知各企业劳动生产率和各企业产值，求平均劳动生产率 B．已知计划完成百分比和计划产值，求平均计划完成百分比 C．已知计划完成百分比和实际产值，求平均计划完成百分比 D．已知生产同产品各企业的产品单位成本和总成本，求平均单位成本
单选题下列各项中属于指数的是( )。 A．人均粮食产量 B．平均价格 C．发展速度 D．人口数
单选题统计分析报告的语言运用要求( )。 A．精练、准确、生动、具体 B．细致描写、深刻分析 C．形象、明晰、突出 D．概括、显示、明晰、通俗
单选题The population of elephant seals, reduced by hunting to perhaps a few dozen animals early in this century, has soared under federal protection during the last few decades. However, because the species repopulated itself through extensive inbreeding, it now exhibits a genetic uniformity that is almost unparalleled in other species of mammals, and thus it is in far greater danger of becoming extinct than are most other species.
Given the information in the passage above, which of the following is most likely the reason that other species of mammals are leas likely than elephant seals to become extinct?
单选题If x is an integer, is(x+p)(x+q)an even integer? (1)q is an even integer. (2)p is an even integer. (A) 条件(1)充分，但条件(2)不充分． (B) 条件(2)充分，但条件(1)不充分． (C) 条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分． (D) 条件(1)充分，条件(2)也充分． (E) 条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．