cumulative frequency

A cumulative frequency distribution enables us to see how many observations lie above or below certain values.

累计频率分布反映在某个值以下，或在某个值以上有多少个观察值。

Phenological observation data of plant communities from 1982 to 1996 at 5 sites and a method for phenological cumulative frequency modeling were used to determine the beginning dates of local phenological seasons and their corresponding threshold values of normalized difference vegetation index ( NDVI) in each year.

利用1982～1996年5个站点的植物群落物候观测数据和物候累积频率拟合法，划分各站逐年的植被物候季节，并确定各季节初日对应的当地归一化差值植被指数（NDVI）阈值。

A new method handling the load cumulative frequency distribution

一种处理载荷累积频次分布的方法

Such classes are separated by'natural breaks'in the frequency distribution or the analogous cumulative curve.

这样的级可由频率分布或类似的累积曲线中的自然断点划分开来.

The method quantifies the system robustness based on cumulative frequency curves.

该方法能以累积频率曲线的形式直观地对任意性能水平下不同控制系统的鲁棒性能进行比较；

On Some Problems in Computing the Cumulative Frequency of High Tide Level in Multi-shallow Waterway of Semi-closed Bays in Zhejiang Porvince

浙江省半封闭型海湾多浅段航道乘潮通航保证率计算若干问题的探讨

Draw the cumulative frequency polygon for the distribution.

绘出此分布的累积频数多边形.

The Six Sigma Black Belt should be able to read values from a cumulative frequency ogive.

6西格玛黑带应能从累计频次尖顶部读出数值.

A new method for calculating the cumulative frequency of accumulated temperature in Mountainous Region

计算山地积温累计频率的一种新方法虎纹捕鸟蛛发育起点温度和有效积温研究