一、模型假设 只有现在和未来两个时刻,现在是确定的,未来是不确定的; 假定市场中有n种风险资产,其未来价格是n个随机变量x,x2,xn 第0种资产是无风险资产,其未来价格x是确定值; 假设n+1种资产的当前价格为p(x),px),p(x2),p(xn).这n+1 种资产的投资组合可用n+1维向量=(1)来表示那么投资组 合的当前价格为 p=p(x)+0p(x1)+…+np(xn) 投资组合的未来价格为

APT理论的均衡证明 我们假定一个只有现在和未来两个时刻的两期模型,现在是确定的,未来 是不确定的。假定市场中有n种风险资产,其未来价格是n个随机变量 x1,x2,…,xn;第0种资产是无风险资产,其未来价格x是确定值;n+1种资产 的当前价格为p(x),p(x1)p(x2),p(xn)。这+1种资产的投资组合可用n+1 维向量=(,1,0)来表示

have attempted to test Porters theory of generIc strategy and link it to performance, but the results vary. Simlarly, it is easy to believe that a firm cannot be successful without certain resources and/or apabilities Efforts have been made to test the resource-based theory and to ue capabilities to firm performance, again with varying results These two theories and related research streams have

There are many contexts in which a variable is ordinal that have three or more Ordinal logistic Some typical examples are health status Regression ery good, good, So-So, bad, very bad) political ideology(very liberal, slightly iberal, moderate, slightly conservative very conservative), fertility intention(the

PART ONE INTRODUCTION it must also allocate the output of goods and services that they produce. It must decide who will eat caviar and who will eat potatoes. It must decide who will drive a porsche and who will take the bus The management of societys resources is important because resources are scarcity

一、说明 1.本资料是厦门聚英教育培训中心金融课题组集体智慧的结晶,是半年来对2005年考研金融联考大纲、前几年的大纲和考题以及对诸多专业论文资料的研究成果

一、理解金融学的基本内涵 二、掌握利率的风险结构含义及其理论 三、掌握金融学的两个基本概念:风险和时 四、掌握利率期限结构含义及其理论

LAW OF ITERATED EXPECTATIONS Law of Iterated Expectations Theorem 1 Law of iterated expectation.s The notation Er[ indicates the expectation over the value of a Example

Expectations and Conditional Expectations Definition 1 Discrete Random Variable random wariable is discrete f the set of outcomes is either finite in number or countably

Review Conditional pdf Let(Y1,., YN) have joint pdf f(31,.. JN). Let f(3J+1, .. yN)be the marginal pdf of(y+1,……,YN). The conditional pdf of y1,…, Y, given y+1,…, YN is defined by