Urban hydrological phenomena, especially those involving storms, give historical data that can be observed only once, and then will not occur again. Such collected data form an ever-growing sample of measurements. Even if some phenomena can be described by means of physical or rational theory, the input, rainfall, is commonly stochastic in nature and whole phenomena can be amenable to statistical interpretation and probability analysis.
Table 9.22.4 summarizes data analysis methods along with examples and references. Although it is impossible to summarize the many references in general or applied statistics, good basic knowledge is provided in books such as Kendall and Stuart's theory of statistics, or Haan's (1977) statistical methods in hydrology.
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