题目内容
某公司经营多年之后，形成了一套成熟的企业文化和管理体系，根据多年的运营经验，发现经理层、监察员、办事员三种职务的比例大约在 15：5：80比较合适，这样的运行效率最高。两年前公司原管理层集体退居二线，新任管理层上任后对公司结构进行了较大的变动，有员工担心这是否已经导致了职务类别比例的失调，进而影响到公司的高效运行。目前三种职务的人数比为84：27：363。请计算卡方检验的检验统计量Q(精确到小数位3位)。
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假设某变量的所有可能取值有n个水平，现在已知有一个样本，该样本中变量的可能取值也只有n个水平，现在需要利用这个样本，来判断总体各取值水平出现的概率是否与已知概率相符。这就是单样本率与已知总体率的比较，也称为拟合问题。
It is the custom to shake hands when you are introduced to a person. Chinesepeople seem to shake hands more often when they meet. Remember that the older person or the woman should be the first to offer the hand, otherwise a nod, a smile is enough. In western countries, a firm(强有力的) handshake is considered(认为) polite; a weak handshake may indicate (表明) disinterest.
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