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結(jié)論: FA= F?= ,拒絕原假設(shè) H0,說明彩電的品牌對(duì)銷售量有顯著影響 FB= F?= ,接受原假設(shè) H0,說明銷售地區(qū)對(duì)彩電的銷售量沒有顯著影響 已知: ? = 時(shí), Zα /2= ?= 時(shí), Zα /2= ?= 時(shí), Zα /2= 差異源 SS df MS F P v a l u e F c r i t 行 ( 因素 A ) 1 3 0 0 4 .5 5 3 4 3 3 4 .8 5 1 8 .1 0 7 7 7 9 .4 6 E 0 5 3 .4 9 0 3 列 ( 因素 B ) 2 0 1 1 .7 4 5 0 2 .9 2 5 2 .1 0 0 8 4 6 0 .1 4 3 6 6 5 3 .2 5 9 2 誤差 2 8 7 2 .7 12 2 3 9 .3 9 1 7 總和 1 7 8 8 8 .9 5 19請(qǐng)您刪除一下內(nèi)容, O(∩ _∩ )O 謝謝!??!【 China39。因此,往往先進(jìn)行相關(guān)分析,然后才選用有明顯相關(guān)關(guān)系的變量作回歸分析。 配對(duì)樣本 所謂配對(duì)樣本,指只有一個(gè)總體,雙樣本是由于樣本中的個(gè)體兩兩匹配成對(duì)而產(chǎn)生的。 (對(duì) ) 在社會(huì)現(xiàn)象中,即使相同的意識(shí)作用也 完全可能有不確定的結(jié)果,這就提供了概率論應(yīng)用的可能性。 A 眾數(shù) B 算術(shù)平均數(shù) C 中位數(shù) D 幾何平均數(shù) 在一個(gè)左偏的分布中,小于平均數(shù)的數(shù)據(jù)個(gè)數(shù)將( C )。 級(jí) 專業(yè) 2021學(xué)年第 1 學(xué)期《社會(huì)統(tǒng)計(jì)學(xué)》試卷 A 姓名: 學(xué)號(hào): (□開卷 □閉卷) 題號(hào) 一 二 三 四 總分 得分 一、選擇題: 2*10=20 分 要了解 400 個(gè)學(xué)生的學(xué)習(xí)情況,則總體單位是 ( B ) 。 A 超過一半 B 等于一半 C 不到一半 D 視情況而定 若 P( A)= ,P( B)= , P( A/B)= ,則 )( BAP ? =( D )。 ( 對(duì) ) 成功次數(shù)的期望值 λ 是決定泊松分布的關(guān)鍵因素。 消減誤差比例 變量間的相關(guān)程度,可以用不知 Y 與 X 有關(guān)系時(shí)預(yù)測(cè) Y 的誤差 0E ,減去知道 Y 與 X有關(guān)系時(shí)預(yù)測(cè) Y 的誤差 1E ,再將其化為比例來度量。與此同時(shí),相關(guān)關(guān)系往往要通過回歸分析才能闡釋清楚,例如皮爾遜相關(guān)系數(shù)的 PRE 性質(zhì)。s 10 mustsee animations】 The Chinese animation industry has seen considerable growth in the last several years. It went through a golden age in the late 1970s and 1980s when successively brilliant animation work was produced. Here are 10 mustsee classics from China39。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 feud with Nezha over his son39。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 th