A.時點指標(biāo)
B.時期指標(biāo)
C.總量指標(biāo)
D.質(zhì)量指標(biāo)
E.數(shù)量指標(biāo)
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A.全部大學(xué)畢業(yè)生是研究總體
B.大學(xué)畢業(yè)生總數(shù)是統(tǒng)計指標(biāo)
C.大學(xué)畢業(yè)生就業(yè)率是統(tǒng)計標(biāo)志
D.反映每位大學(xué)畢業(yè)生特征的職業(yè)是數(shù)量指標(biāo)
A.全距
B.標(biāo)準(zhǔn)差
C.平均差
D.標(biāo)準(zhǔn)差系數(shù)
A.提高
B.下降
C.不變
D.條件不夠，無法判斷
A.每個組的最小值
B.每個組的最大值
C.全距中的最大值
D.全距中的最小值
A.80%~89%，90%~99%，100%~109%，110%以上
B.80%以下，80.1%~90%，90.1%~100%，100.1%~110%
C.90%以下，90%~100%，100%~110%，110%以上
D.85%以下，85%~95%，95%~100%，105%~115%
最新試題
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？（）
If data are grouped into intervals and the number of items in each group is listed, this could be called a （）
一個地區(qū)一定時期的商品零售額屬于（）
Descriptive statistics deals with methods of（）
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 cumulative frequency of the third class？（）
以2000年a0為最初水平，2016年an為最末水平，計算鋼產(chǎn)量的年平均發(fā)展速度時，須開（）
If the individual class frequency is divided by the total frequency, the result is the （）.
Simon Arnett, Director of Human Resources, is exploring the causes of employee absenteeism at Buderim Bottling during the last operating year (1 January 2005 to 31 December 2005). The average number of absences per employee, calculated from the personnel data of all employees, is a （）.
The number of class intervals in a frequency distribution is usually between （）.
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 （）.