Mathematical statistics and the measure of volatility is a good discipline used for Online Investing. These measures of investments are example concepts that have a tendency to intimidate average investors. Standard deviation based on the rate of return of an investment is a measure of the volatility of the investment and is a good representation of risk found in stocks and options. If you look in the Wikipedia article about Karl Pearson, Fellow of the Royal Society, it tells how he established the discipline of mathematical statistics. Karl Pearson first used the term ?Standard Deviation? in writing in 1894 subsequent its use in his lectures. Standard Deviation is quite crucial in financial issues.
A large standard deviation indicates that the data points are far from the mean and a small standard deviation indicates that the data points are clustered much closer to the mean. When investing, standard deviation serves as a measure of uncertainty. Designated standard deviation of a group of repeated measurements should give the precision of those measurements.
Investors deciding whether measurements agree with a theoretical prediction must determine if the standard deviation of those measurements is of extreme importance. Investors can gain common sense practical value when online investing by acquiring an understanding of the standard deviation of a set of values and in appreciating how considerably the variations are from the common (mean) of stocks & options and the market indices.
In addition, Standard Deviation gives a very good representation of the danger associated with an offered security such as a stock, option or even a portfolio of securities. To effectively manage your investment portfolio, it requires a great handle on the associated risks. Risk is such an important factor because it determines the variations on the returns of the portfolio and gives investors a mathematical foundation for investment choices regarded as mean-variance optimization. Since risk will increase, the anticipated return on your portfolio will increase and the uncertainty of the return will also boost. Standard Deviation offers a quantified approximation of the uncertainty of your long-term returns.
Investors need to place a great deal of importance on using standard deviation when we make trading decisions. When online investing with options it is even more paramount that the investor understands and is able to make proper use of tools such as standard deviation and Bollinger Bands. This is especially true since options involve risks that are not suitable to all investors.
For example, if we are looking for a stock to write a covered call on we will look for a stock with a low standard deviation history. If we are looking to buy puts then we will seek a stock with a high standard deviation. The larger the variance in standard deviation, the larger the risk the security will have. Many technical analysts prefer to use an analysis tool called ?Bollinger Bands? which were invented by John Bollinger. This tool is used to measure the highness and lowness of price relative to previous trades in the industry.
For a short explanation, Bollinger Bands are made up of a middle band being an N-period (usually the simple moving average), an upper band at K times an N-period standard deviation above the middle band, and a lower band at K times an N-period standard deviation under the middle band, where N and K are normally 20 and 2 respectively. These Bollinger Bands are extremely helpful in recognizing patterns and comparing price actions of stocks and therefore are really helpful for creating systematic trading choices. When employed with other tools and data, Bollinger Bands are an extremely efficient management tool that has a practical use of standard deviation and its use in generating selections for your online investing.
Wall street considers standard deviation a common concept that all traders need to use regularly. If you are a beginning investor then please consider starting with a complete understanding of these and other investment tools and concepts.
In order that an investor be on the safe side of trading, let?s assume that all investors are at a loss for education when it comes to both stocks and options. Therefore, we recommend a simple preventive measure by any investor that wants to be successful with online investing. That measure is to start your trading with FREE VIRTUAL STOCK TRADING avoid losing any money at all until you are comfortable with your experience level.
Good Luck with your Online Investing!
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