某企業(yè)準(zhǔn)備用3種方法組裝一種新的產(chǎn)品,為確定哪種方法每小時生產(chǎn)的產(chǎn)品數(shù)量最多,隨機抽取了30名工人,并指定每個人使用其中的一種方法。通過對每個工人生產(chǎn)的產(chǎn)品數(shù)進(jìn)行方差分析得到下面的結(jié)果:
若顯著性水平α=0.05,檢驗三種方法組裝的產(chǎn)品數(shù)量之間是否有顯著差異?您可能感興趣的試卷
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Descriptive statistics deals with methods of()
Which of the following statements is not true?()
某廠某年職工勞動生產(chǎn)率為20000元,是歷史最高水平的1.2倍。這里的1.2倍是()
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). The average number of absences per employee, calculated from the personnel data of all employees, is a ().
If data are grouped into intervals and the number of items in each group is listed, this could be called a ()
A summary measure that is computed from a sample to describe a characteristic of the population is called()
要了解某地區(qū)全部大學(xué)生的就業(yè)情況,那么()
If the individual class frequency is divided by the total frequency, the result is the ().
品合格率指標(biāo)是()
對全國各鐵路交通樞紐的貨運量、貨物種類等進(jìn)行調(diào)查,以了解全國鐵路貨運概況。這種調(diào)查屬于()