Hi all,
As you may know that efficient frontier is one of the most important tool help you determine optimal point that can (1) maximize your return given level of risk or (2) minimize your risk given level of return.
Below attached file is example how to construct efficien frontier given data set. For data set you can download on either yahoofinance, bloomberg, datastream - to named just a few.
If you're interested in, I'll then show you how to apply it in reality and how to use matlab instead.