警方學(xué)員坐在一個黑暗的房間里,對著投影屏幕。十個不同的許可飛機被投影在屏幕上,一次一個,每次5秒,兩次試驗間隔15秒。在最后15秒的時間間隔里,打開燈,要求警察學(xué)員以任意次序?qū)懴掠^察到的盡可能多的10個牌號。隨機抽取試驗中的15名學(xué)員參加了為期一周的記憶訓(xùn)練課程。然后,對他們進行重新測試,正確號碼牌的數(shù)量結(jié)果如下表所示。
您可能感興趣的試卷
你可能感興趣的試題
A.A與B相互獨立
B.A與B不獨立
C.A與B相互排斥
D.A與B相關(guān)
A.統(tǒng)計資料的收集和分析
B.理論統(tǒng)計和運用統(tǒng)計
C.統(tǒng)計預(yù)測和決策
D.描述統(tǒng)計和推斷統(tǒng)計
最新試題
某班的學(xué)習(xí)按考試成績分為60分以下,60-70,70-80,80-90,90-100,這種分組()
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?()
如果居民按報告期價格購買商品需多支出40萬元,報告期商品銷售額為200萬元,則價格指數(shù)為()
以2000年a0為最初水平,2016年an為最末水平,計算鋼產(chǎn)量的年平均發(fā)展速度時,須開()
Descriptive statistics deals with methods of()
Which of the following is not the goal of descriptive statistics?()
If the individual class frequency is divided by the total frequency, the result is the ().
If data are grouped into intervals and the number of items in each group is listed, this could be called a ()
對全國各鐵路交通樞紐的貨運量、貨物種類等進行調(diào)查,以了解全國鐵路貨運概況。這種調(diào)查屬于()
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 approximate range of the number of phone calls arriving each hour?()