期刊名称：Annals of the University of Oradea : Economic Science
印刷版ISSN：1222-569X
电子版ISSN：1582-5450
出版年度：2009
卷号：XVIII
期号：03
出版社：University of Oradea
摘要：Combining risks does not follow the usual aritmethical rules, as it is the case with incomes. Totalling up
two risks, each equalling 2, does not always have 4 as a result. The sum is usually smaller, due to
diversification. The correlation-based calculation shows us that the sum will range between 0 and 4. This
is the essence of diversification and correlation. diverisfication reduces the portfolio‟s volatility.
