Pls Explain Beta Value

[tcdaund]

Dear all friends
i am want some details on Beta Value
1) What is Beta Value?
2) If It is grater than 1 is that share good for intraday?
3) How effectively for Intraday Trading.
4) How i get Latest Beta Value Data

Please guide me.

 

[Capricorn]

http://en.wikipedia.org/wiki/Beta_(finance)

Is it useful? Depends really how u make use of it.

 

[harrywatson66]

The formula for the beta of an asset within a portfolio is

where ra measures the rate of return of the asset, rp measures the rate of return of the portfolio, and Cov(ra,rp) is the covariance between the rates of return. The portfolio of interest in the CAPM formulation is the market portfolio that contains all risky assets, and so the rp terms in the formula are replaced by rm, the rate of return of the market.