... 60 importance of understanding, 59lognormal distribution and, 64 66 probability distribution and, 64 randomness and, 61 , 67 standard deviations and, 60 64 Wasting asset, options as, 26 27Whalley Model, ... stock, 16 Standard deviation of prices, 60 64 Stocks, 11, 16. See also DividendsStraddles, 249– 266 construction of, 76 decision structure, 252– 266 implied volatility prediction, 72rationale for, ... 31FLEX options, 11Foreign exchange options: interest rates and, 28Phi and, 48–49Forward price, 61 Futures contracts, 11, 42, 129, 165 Gamma:defined, 24–25 option strategy description and, 49–53price...