A.抽簽法
B.搖獎法
C.配對法
D.配額法
E.隨機(jī)數(shù)表法
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A.實(shí)際經(jīng)濟(jì)增長率
B.通貨膨脹率
C.失業(yè)率
D.痛苦指數(shù)
A.取值都在0與1之間
B.均值為0
C.均值為1
D.標(biāo)準(zhǔn)差為1
A.2％
B.0.5％
C.5％
D.4.8％
A.總指數(shù)大于所有的個體指數(shù)
B.總指數(shù)小于所有的個體指數(shù)
C.總指數(shù)介于個體指數(shù)的最大值與最小值之間
D.上述三種情況都可能發(fā)生
A.基期價格
B.現(xiàn)期價格
C.基期銷售量
D.現(xiàn)期銷售量
最新試題
如果居民按報(bào)告期價格購買商品需多支出40萬元，報(bào)告期商品銷售額為200萬元，則價格指數(shù)為（）
A student achieves an 82 on the first test in a statistics course. From this, she assumes that her average at the end of the semester (after other tests) will be about 82. This is an example of （）.
The number of class intervals in a frequency distribution is usually between （）.
什么是季節(jié)變動？研究它的意義何在？如何測定季節(jié)變動？
變量數(shù)列中，各組頻率之和應(yīng)（）
Which of the following is best to show the percentage of a total budget that is spent on each category of items？（）
The number of phone calls arriving at a switchboard each hour has been recorded and the following frequency distribution has been developed.What is the approximate range of the number of phone calls arriving each hour？（）
A summary measure that is computed from a sample to describe a characteristic of the population is called（）
Which of the following is not the goal of descriptive statistics?（）
企業(yè)生產(chǎn)一種產(chǎn)品需順次經(jīng)過四個車間，這四個車間的廢品率分別為1.5%、2.0%、2.0%和1.0%。該企業(yè)生產(chǎn)這種產(chǎn)品的平均廢品率是多少？