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某企業(yè)2018年技術(shù)工占50%,2019年新招收了一批學(xué)徒工,使學(xué)徒工的比重增加了10%。假定全廠各級工資水平均無變化,則2019年職工總平均工資將()
什么是季節(jié)變動?研究它的意義何在?如何測定季節(jié)變動?
One advantage of a stem and leaf plot over a frequency distribution is that ().
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 ().
時間序列構(gòu)成因素有哪些?分解的基本原理和思路是什么?
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?()
一個地區(qū)一定時期的商品零售額屬于()
If the individual class frequency is divided by the total frequency, the result is the ().
對某班級學(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()
要了解某地區(qū)全部大學(xué)生的就業(yè)情況,那么()