A.A與B相互獨(dú)立
B.A與B不獨(dú)立
C.A與B相互排斥
D.A與B相關(guān)
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A.統(tǒng)計(jì)資料的收集和分析
B.理論統(tǒng)計(jì)和運(yùn)用統(tǒng)計(jì)
C.統(tǒng)計(jì)預(yù)測和決策
D.描述統(tǒng)計(jì)和推斷統(tǒng)計(jì)
最新試題
Descriptive statistics deals with methods of（）
最能反映離散程度的指標(biāo)是（）
某企業(yè)的生產(chǎn)計(jì)劃完成百分比采用如下分組，請指出哪項(xiàng)是正確的（）
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 （）.
什么是季節(jié)變動(dòng)？研究它的意義何在？如何測定季節(jié)變動(dòng)？
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 （）.
在組距數(shù)列中，下限就是（）
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 （）.
A cumulative frequency distribution would provide（）.