REGULAR PATTERN OF GROWTH AND DEVELOPMENT continuous process Different rate of development in various systems General pattern Individual variance Puberty13yr(F)/15yr(M)
Weather derivatives: Definitions Heating degree days (HDD): For each day this is max(o, 65-4)where a is the average of the highest and lowest temperature in°F Cooling Degree Days(CDD): For each day this is max( o, A-65)