博文
(2009-04-10 19:09:52)
閱讀 ()評論 (1)
閱讀 ()評論 (0)
(2009-04-09 20:33:37)
閱讀 ()評論 (0)
閱讀 ()評論 (0)
有2袋水果,第一袋中3個蘋果2個橘子,第二袋中5個蘋果3個橘子,問每袋拿一個正好一個蘋果一個橘子的概率。。。[閱讀全文]
閱讀 ()評論 (0)
(2009-04-08 20:56:32)
閱讀 ()評論 (0)
http://web.wenxuecity.com/BBSView.php?SubID=style&MsgID=1498653[閱讀全文]
閱讀 ()評論 (2)
閱讀 ()評論 (2)
閱讀 ()評論 (1)
Twoofthemostimportantconceptsininvestingarereturnandrisk.Ifreturnsofsecuritiesareviewedasrandomvariables,thentherewardofaportfoliocanbemeasuredastheexpectation,ormean,oftheportfolioreturnanditsriskcanbemeasuredasthevarianceoftheportfolioreturn.Ofcourse,manyotherapproachesarepossible,butmean-variance
analysisisoneofthesimplestandmostpowerful.ThisapproachwassuggestedbyHarryMarkowitz,whowontheNob...[閱讀全文]
閱讀 ()評論 (0)
[1]
[2]
[3]
[4]
[5]
[>>]
[首頁]
[尾頁]