單項(xiàng)選擇題Claudia Taylor, Director of Global Industrial Sales in Melbourne, is concerned by a deteriorating sales trend. Specifically, the number of customers is stable at 1500 but they are purchasing less each year. She orders her staff to search for causes of the downward trend by selecting a focus group of 40 industrial customers. For this study, the set of 40 industrial customers is a ().

A.statistic
B.sample
C.population
D.parameter


您可能感興趣的試卷

最新試題

Descriptive statistics deals with methods of()

題型:?jiǎn)雾?xiàng)選擇題

The number of class intervals in a frequency distribution is usually between ().

題型:?jiǎn)雾?xiàng)選擇題

在組距數(shù)列中,下限就是()

題型:?jiǎn)雾?xiàng)選擇題

對(duì)某班級(jí)學(xué)生的生活狀況進(jìn)行統(tǒng)計(jì)調(diào)查,下列標(biāo)志中屬于不變標(biāo)志的是()

題型:?jiǎn)雾?xiàng)選擇題

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 ().

題型:?jiǎn)雾?xiàng)選擇題

最能反映離散程度的指標(biāo)是()

題型:?jiǎn)雾?xiàng)選擇題

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 ().

題型:?jiǎn)雾?xiàng)選擇題

常用的長(zhǎng)期趨勢(shì)測(cè)定的方法有哪些?各有什么特點(diǎn)?

題型:?jiǎn)柎痤}

以2000年a0為最初水平,2016年an為最末水平,計(jì)算鋼產(chǎn)量的年平均發(fā)展速度時(shí),須開()

題型:?jiǎn)雾?xiàng)選擇題

一個(gè)地區(qū)一定時(shí)期的商品零售額屬于()

題型:多項(xiàng)選擇題