Quantitative forecasting models are used to forecast future data as a function of past data. They are appropriate to use when past numerical data is available and when it is reasonable to assume that some of the patterns in the data are expected to continue into the future.ualitative forecasting techniques are subjective, based on the opinion and judgment of consumers, experts; they are appropriate when past data are not available. They are usually applied to intermediate-or long-range decisions.
The PPL Building is Allentown's tallest building at 322 feet (98 m), and the Renaissance Centre is the tallest in Erie at 198 feet (60 m). The tallest building in Reading, Pennsylvania, is the Berks County Courthouse, rising 275 feet (83 meters). List of tallest buildings in Philadelphia.
Since neither of those structure are true buildings, Philadelphia's City Hall did remain the tallest occupied building until 1909, when New York built the Metropolitan Life Building. It was, however, the tallest building in Philadelphia until 1987, when a long-standing gentlemen's agreement, discouraging constructing higher than Penn's hat, was broken with the construction of the sixty-one-story Liberty Place.