[{"data":1,"prerenderedAt":38},["ShallowReactive",2],{"q-sitca_invest-115-2-004":3},{"exam":4,"examName":5,"chapterSlug":6,"question":7,"related":22},"sitca_invest","投信投顧業務員資格測驗——證券投資與財務分析","c5",{"id":8,"exam":4,"session":9,"qno":10,"question":11,"options":12,"answer":17,"chapter":18,"freq":19,"explanation":20,"difficulty":21},"sitca_invest-115-2-004","115-2",4,"股票的變異數為 0.25，平均報酬率為 0.4，其變異係數為：",[13,14,15,16],"0.8","0.625","2.5","1.25",3,"風險與報酬",1,"變異係數（CV）衡量每取得一單位報酬所必須承擔的風險，公式是標準差除以期望報酬率，分子是標準差而不是變異數，這一步最常被漏掉。變異數 0.25 先開根號得標準差 0.5，再除以平均報酬率 0.4：0.5 ÷ 0.4 = 1.25，故選 (D)。(A) 0.8 是把 0.4 ÷ 0.5，分子分母顛倒，算出來的是每單位風險對應的報酬。(B) 0.625 是直接用變異數 0.25 ÷ 0.4，忘了先開根號還原成標準差。(C) 2.5 對應的是標準差等於 1 的情形，與題目給定的變異數不符。","medium",[23,27,31,35],{"id":24,"question":25,"qno":26},"sitca_invest-114-3-019","哪個事件屬於不可分散風險？",19,{"id":28,"question":29,"qno":30},"sitca_invest-115-1-002","以下敘述何者不正確？",2,{"id":32,"question":33,"qno":34},"sitca_invest-115-1-025","一般而言，投資債券型基金可預期獲得：",25,{"id":36,"question":37,"qno":17},"sitca_invest-115-2-003","公司的負債比率越大，會影響投資者投資該公司發行債券的：",1785904155563]