Average monthly return is a seasonal performance of a stock which an investor must analyzed. The table above illustrates the average monthly return for the past 5 years which give a sense of how the investment performed during this particular period. However, investors should also look at monthly performance to fully appreciate the consistency of its monthly returns. For examples, a short term investors or speculators of CIMB group holdings may experience an unexpected loss during December 2010 to January 2011 if he or she values the stock accordingly to the average monthly returns.
On the other hands, to be detailing evaluate an individual stocks or portfolio, standard deviation which is a risk bear to obtain the prospected return or is widely described as a variability used in statistic and probability theory must be emphasized. It illustrates how much variation from the average (Weston n.d). Lower standard deviation indicates that the data is closer to the