A.median；mean
B.data point；mean
C.quartile；median
D.data point；median
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A.approximation theorem
B.normal probability theorem
C.central limit theorem
D.central normality theorem
A.sample based upon information contained in the population
B.population based upon information contained in the sample
C.population based upon information contained in the population
D.mean of the sample based upon the mean of the population
A.P（A） must be equal to P（B）
B.P（A） must be greater thanP（B）
C.P（A） must be less than P（B）
D.P（A） must be equal to P（A│B）
Exhibit 2 The following represents the probability distribution for the daily demand of computers at a local store.
Refer to Exhibit 2.The probability of having a demand for at least two computers is（）
A.0.7
B.0.3
C.0.4
D.1.0
A.0.0896
B.0.2936
C.0.0413
D.0.0007
最新試題
Which of the following is not the goal of descriptive statistics?（）
在組距數列中，下限就是（）
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). Personnel records of 50 employees are selected for analysis. (The plant employs 250.) For this study, the average number days absent for these 50 employees is a （）.
以2000年a0為最初水平，2016年an為最末水平，計算鋼產量的年平均發(fā)展速度時，須開（）
對全國各鐵路交通樞紐的貨運量、貨物種類等進行調查，以了解全國鐵路貨運概況。這種調查屬于（）
Which of the following is best to show the percentage of a total budget that is spent on each category of items？（）
時間序列構成因素有哪些？分解的基本原理和思路是什么？
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？
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？（）
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 （）.