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管理学工商管理
单选题统计学则是一门关于研究客观事物数量方面和数量关系的( )。 A．自然科学 B．社会科学 C．实质性科学 D．方法论科学
单选题In a certain group of people, the average (arithmetic mean) weight of the males is 180 pounds and of the females, 120 pounds. What is the average weight of the people in the group? (1)The group contains twice as many females as males. (2)The group contains 10 more females than males.
单选题Being an only child has little to do with a child"s social development. A recent study that followed thirty only children and thirty-five first-born children to the age of three found that the two groups of children behaved very similarly to each other toward their peers, their parents, and other adults.
Which of the following, if true, most weakens the conclusion drawn above?
单选题反映个别现象数量变动的相对数是( )。 A．个体指数 B．综合指数 C．总指数 D．定基指数
单选题In a retail store, the average (arithmetic mean) sale for month M was d dollars. Was the average (arithmetic mean) sale for month J at least 20 percent higher than that for month M? (1)For month M, total revenue from sales was $3,500. (2)For month J, total revenue from sales was $6, 000. (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．
单选题For the positive numbers, n, n+1, n+2, n+4 and n+8, the mean is how much greater than the median? (A) 0 (B) 1 (C) n+1 (D) n+2 (E) n+3
单选题海尔集团在冰箱产品获得成功后，将“海尔”品牌使用到空调、洗衣机、手机等产品上，这被称 为：
单选题总体平均数和样本平均数之间的关系是( )。 A．总体平均数是确定值，样本平均数是随机变量 B．总体平均数是随机变量，样本平均数是确定值 C．两者都是随机变量 D．两者都是确定值
单选题相关系数r的取值范围是( )。 A．r=0 B．-1≤r≤0 C．0≤r≤1 D．-1≤r≤1
单选题Which of the following CANNOT be zero? Ⅰ. The sum of 7 consecutive integers Ⅱ. The sum of 10 consecutive even integers Ⅲ. The product of 13 consecutive integers
单选题实物计量单位不包括( )。 A．自然单位 B．标准实物单位 C．劳动单位 D．度量衡单位
单选题(1+x)+(1+x)2+…+(1+x)n=a1(x-1)+2a2(x-1)2+…+nan(x-1)n，则a1+2a2+3a3+…+nan=()．
单选题Is the integer n a multiple of 140? (1) n is a multiple of 10. (2) n is a multiple of 14.
单选题下列不属于商品需求量特点的是( )。 A．商品性 B．流通性 C．消费性 D．可能性 E．货币性
单选题In how many different ways can 3 people be assigned to fill 3 different positions so that each person is assigned to exactly one position? (A) Twelve (B) Nine (C) Six (D) Three (E) One
单选题百科全书属于（ ）
单选题Last year Luis invested x dollars for one year, half at 8 percent simple annual interest and the other half at 12 percent simple annual interest. Now he wants to reinvest the x dollars for one year in the same two types of investments, but the lower rate has decreased, If the higher rate is unchanged, what fraction of the x dollars must be reinvest at the 12 percent rate s that the total interest earned from the x dollars will be the same for both years?
(1)The lower rate is now 6 percent.
(2)The total amount of interest earned from the two investments last year was $3,000.
单选题Inthefigureabove,lineACrepresentsaseesawthatistouchinglevelgroundatpointA.IfBisthemidpointofAC,howfarabovethegroundispointC?(1)x=30(2)PointBis5feetabovetheground.
单选题
下列（ ）不可能成为《反不正当竞争法》中规定的经营者。
A、法人 B、个人 C、医院 D、学校
单选题某商场每月末的商品库存额时间数列是( )。 A．时期数列 B．时点数列 C．平均数时间数列 D．相对数时间数列