【正文】 量的概率分布，隨機(jī)變量為樣本內(nèi)成功事件的次數(shù)。 13．總體和總體單位 總體，就是作為統(tǒng)計(jì)研究對(duì)象的、由許多具有共性的單位構(gòu)成 的整體。該學(xué)派“用數(shù)字、重量、尺度來表達(dá)自己想說的問題”，雖然沒有使用統(tǒng)計(jì) 學(xué)這一名詞，但所使用的社會(huì)宏觀數(shù)量對(duì)比和分析方法揭示了統(tǒng)計(jì)學(xué)所要研究的內(nèi)容，因此歷史上人們將這一學(xué)派稱為“有實(shí)無名”學(xué)派。由于把概率論引進(jìn)統(tǒng)計(jì)學(xué)，使社會(huì)隨機(jī)現(xiàn)象數(shù)量方面的研究提高了準(zhǔn)確性。 14．中位數(shù) 把總體單位某一數(shù)量標(biāo)志的各個(gè)數(shù)值，按大小順序排列，位于正中處的變量值即為中位數(shù)。 25．卡方分布 設(shè)隨機(jī)變量 X1， X2，? Xk，相互獨(dú)立，且都服從同一的正態(tài)分布 N (μ ， σ 2)。 36．理論頻數(shù)：是按照理論分布計(jì)算出的樣本各組頻數(shù)。s contents on the stone wall of a white cloud cave in the mountains. He was then punished with guarding the book for life by the jade emperor for breaking heaven39。 violence, and lack of suitability for children39?；蛘哒f，同一個(gè)組在實(shí) 施實(shí)驗(yàn)刺激之前是實(shí)驗(yàn)中的“控制組”，在實(shí)施實(shí)驗(yàn)刺激之后就成了“實(shí)驗(yàn)組”。若總體單位數(shù)為 N，其中成功類共有 K個(gè)，設(shè)從中抽取n個(gè)為一樣本，則樣本中成功類個(gè)數(shù) x 的超幾何概率分布為 P（ x）＝ H（ x： N， n， K）＝nNxn KNxKCCC?? 式中： x≤ K， 0≤ x≤ n,0≤ K≤ N。 12．指標(biāo)體系 指標(biāo)體系就是一系列有內(nèi)在聯(lián)系得統(tǒng)計(jì)指標(biāo)集合體。配第。因此，一門兼有數(shù)學(xué)和統(tǒng)計(jì)學(xué)雙重意義的學(xué)科被命名為“數(shù)理統(tǒng)計(jì)學(xué)”。 15．眾數(shù) 在一組資料中，出現(xiàn)次數(shù)（或頻數(shù)）呈現(xiàn)“峰”值的那些變量值。那么，我們可以先把它們變?yōu)闃?biāo)準(zhǔn)正態(tài)變量 Z1， Z2，? Zk， k個(gè)獨(dú)立標(biāo)準(zhǔn)正態(tài)變量的平方和被定義為卡方分布（ 2? 分布）的隨機(jī)變量 2? 2? （ k ）＝（ ???1X ）2? （???2X ）2? ? ? （???kX ）2 ＝ ?? ?ki iX122 )(1 ?? ＝ ??ki iZ12 其中 k為卡方分布的自由度， 它表示定義式中獨(dú)立變量的個(gè)數(shù)。 37．方差分析：研究多個(gè)總體均值是否 存在差異的統(tǒng)計(jì)檢驗(yàn)方法。s law. In order to pass this holy book to human beings, he would have to get by the antagonist fox. The whole animation is characterized by charming Chinese painting, including pavilions, ancient architecture, rippling streams and crowded markets, which fully demonstrate the unique beauty of China39。s recall these colorful images that brought the country great joy. Calabash Brothers Calabash Brothers (Chinese: 葫蘆娃 ) is a Chinese animation TV series produced by Shanghai Animation Film Studio. In the 1980s the series was one of the most popular animations in China. It was released at a point when the Chinese animation industry was in a relatively downed state pared to the rest of the international munity. Still, the series was translated into 7 different languages. The episodes were produced with a vast amount of papercut animations. Black Cat Detective Black Cat Detective (Chinese: 黑貓警長 ) is a Chinese animation television series produced by the Shanghai Animation Film Studio. It is sometimes known as Mr. Black. The series was originally aired from 1984 to 1987. In June 2021, a re