發布時間:2023-07-15 15:02編輯:融躍教育CFA
Which of the following statements is correct regarding the chi-square test of independence?
A The test has a one-sided rejection region.
B The null hypothesis is that the two groups are dependent.
C If there are two categories, each with three levels or groups, there are six degrees of freedom.
(數量 Hypothesis Testing)
通常是根據一個列聯表來檢驗表中的兩個特征是否獨立,比如這個表中的earnings growth和dividend yield是否獨立;原假設是兩個特征獨立(independent); 自由度是(r-1)(c-1),r和c分別是兩個特征的組數,A中強調one-sided,意思是拒絕域都在一邊。
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