stock market math project

What are the precautions to be taken by investors before investing in the stock market?

Also, what are scams in the stock market and the advantages and disadvantages of investing in the markets? plzzzzzzzzz answer, coz i need this information for my math project!

N main guarantee of stocks to buy. The values ​​fluctuate up and down. Its value can drop to zero. An investor should research the companies before investing, see Historical value creation. To help protect the value of an equity portfolio should be diversified. Ie own stocks in many different industries, large medium and small caps. A major disadvantage is that they have immediate access to your investment. By selling shares may take a week to receive a check. There would be no scams in the stock markets. Scams involve taking money from investors of stocks that do not exist, so the list would not be an exchange.

The Big Mac Index. METAL film 1.04

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