對2993戶居民家庭的住房面積進(jìn)行調(diào)查并進(jìn)行檢驗,結(jié)果如下表。
能否推斷所有家庭的平均面積是60平方米?您可能感興趣的試卷
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對2993戶居民家庭的住房面積進(jìn)行調(diào)查并進(jìn)行檢驗,結(jié)果如下表。
根據(jù)統(tǒng)計量之間的關(guān)系,計算出①、②、③、④、⑤的值
A.中位數(shù)檢驗
B.曼-惠特尼U檢驗
C.K-S檢驗
D.Kruskal-Wallis檢驗
E.Jonckheere-Terpstra檢驗
A.發(fā)病率
B.性別
C.年齡段
D.居住地區(qū)
E.工作環(huán)境
A.單樣本t檢驗是對樣本來自的總體的均值檢驗
B.單樣本t檢驗中要求數(shù)據(jù)只包含一個個案
C.單樣本t檢驗要求樣本來自的總體服從或近似服從正態(tài)分布
D.單樣本t檢驗中原假設(shè)是總體均值與檢驗值存在顯著差異
E.單樣本t檢驗可以對總體比例進(jìn)行檢驗
A.反映集中趨勢的描述統(tǒng)計量
B.反映總規(guī)模總水平的描述統(tǒng)計量
C.反映離散程度的描述統(tǒng)計量
D.反映分布形態(tài)的描述統(tǒng)計量
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 the individual class frequency is divided by the total frequency, the result is the ().
Which of the following is best to show the percentage of a total budget that is spent on each category of items?()
Which of the following is not the goal of descriptive statistics?()
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()
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 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?()
某企業(yè)的生產(chǎn)計劃完成百分比采用如下分組,請指出哪項是正確的()
A summary measure that is computed from a sample to describe a characteristic of the population is called()
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 ().