摘要
回顾经验频率公式推导的理论基础,比较各类公式的优缺点,研究P—Ⅲ型分布和不连序系列的无偏绘点位置,并对数学期望公式进行专门讨论,建议在水文计算中,应推广使用中值无偏经验频率公式。
The existing plotting position formulae are reviewed and compared with each other. Some research work about the unbiased plotting positions for Pearson type 3 distribution and historical flood data are conducted. The use of WeibuU formula is also discussed. It is suggested to use median unbiased plotting position formula in hydrological computation.
关键词
水文计算
次序统计
绘点位置
hydrological computation
order statistics
plotting positions
median unbiased.
