We often hear the terms alpha and beta when talking about investments. These are two different measures that are part of the same equation derived from a linear regression. Don't worry if that sounds complicated, we'll explain it all in this article. Key Takeaways Alpha and beta are two ...
The terms alpha and beta are derived from a regression equation whereby beta measures the sensitivity of a security or portfolio's return to the return of the market, a market index, or a set of risk factors, and alpha measures the portion of the return that is not explained by the beta...
- 截面回归（Cross-sectional Regression）- 资本资产定价模型（Capital Asset Pricing Model, CAPM）问题1：CAPM的beta解释 CAPM中的beta，实质上是衡量一个资产相对于市场风险的敏感度。最初，人们普遍认为CAPM公式（[公式]）描述了资产超额收益与市场超额收益的关系，但这其实是(2)的误解。真正的CAPM（...
Cross-sectional Regression: 截面回归 Capital Asset Pricing Model, CAPM: 资本资产定价模型 问题1:什么是beta? 1.1 以数学模型的角度如下哪个是CAPM? ,()rp−rf=βp(rm−rf)+ϵ,(1) ,()rp−rf=α+βp(rm−rf)+ϵ,(2) rp 指代资产或者投资组合 p 的收益 rf 指代无风险利率 rm 指代市场...
Noncentered PCA of proportion data gives site ordinations that display approximate alpha diversities of sites and beta diversities of groups of sites, as measured by the Simpson index and mean squared Euclidean distance, respectively. Species centering allows a better approximation to beta diversities....
using thecapital asset pricing model (CAPM)formula which considers an investment's actual return, risk-free rate, and beta. Beta, on the other hand, is calculated through regression analysis, which compares the historical returns and variances of an investment against the returns of a market ...
Alpha and beta testing come under functional testing.Alpha testing: after completion of the system, the product vendor come to the producer's place and test the whole system in any manner.Beta testing: after delivered the system to the vendor. the vendor have themself some specific customers. ...
Beta衡量的是一个股票的波动性，如果一个stock的beta是1.2，意思就是比市场波动的平均水平高20%。比如...
Alpha Testing is done in the clients place Beta Testing is done by selective group of users (Normal Users) For ex: Apps like Yahoo messenger, Firefox releases its beta version to users and get their feedback. (You might have noted Stable versions have Even ending number (ex: 1.8.2) and...
As early as 1891, clinical reports suggested that major components of the cell wall of gram-negative bacteria such as endotoxins were associated with antitumor activities; Bruns ( 1 ) and Coley ( 2 ) described the regression of tumors in patients with tumors who were deliberately injected with ...