Statistics, Portfolio Management, Stock Market, Modern Portfolio Theory, Standard Deviation.
return for Asset A after 5 years is R = (521 — 500) / 500 = 4.2%, and after 10 years it is 10.8%. Similarly for Asset B is -7.4%, notice the negative sign, it means you lost money on this asset on the short run, but after 10 years you make more money than Asset A; the return of Asset B on the long