Digital media player - Terminology. 1  Digital media players are also commonly referred to as a digital media extender, digital media streamer, digital media hub, digital media adapter, or digital media receiver (which should not be confused with AV Receiver that are also called Digital Media Renderer).
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Bi or beta, is the measure of a specific stock's market risk and shows that stock's volitility relative to the market. Beta is not always constant; it changes sometimes. The most common calculation for beta is to run a regression of the security's past returns against the past returns of the market (above formula).The most current and up-to-date beta would most likely be found in the newspaper in the business section where all the stocks are listed.It would probably be listed with the other stats, like P/E (price earnings). If not found there, try the finance section of Yahoo for a specific company.nswers. Best Answer: The formula looks like this: Ri = Rrf + Bi(Rm-Rrf) Can be read as: R sub i equals R sub rf plus beta (Bi) times R sub m minus R sub rf where R sub i is the required return, R sub rf is return on a risk-free investment, R sub m is the return on the entire market and (Rm-Rrf) is the risk premium.