考虑累计频率的随机数函数 [英] Random number function that factors into account Cumulative Frequency

问题描述

姓氏人口普查数据集和名字出现会提供cumulative frequency和frequency.我该如何获得一个随机名称，并选择其在现实世界中出现的可能性?

The census dataset for last name and first name occurrences provides cumulative frequency and frequency. How do I go about getting a random name with the likelyhood of it being chosen that of the occurrence in the real world?

推荐答案

只需生成0-100范围内的随机实数，然后在累积频率数据集中查找相应的条目即可.

Just generate a random real number in the 0-100 range and look for the corresponding entry in the cumulative frequency dataset.

例如，假设您的随机数为x = 19.41.查看表(按累积频率排序)，找到第一个值大于或等于x

Example, say your random number gives x = 19.41. Look into the table (sorted by cumulative frequencies) and locate the first one that has a value greater or equal than x

WALLACE        0.081 19.315    106
WOODS          0.080 19.395    107
COLE           0.080 19.476    108
WEST           0.080 19.555    109
JORDAN         0.078 19.634    110

在此示例中，您获得"COLE"

in this example, you obtain 'COLE'

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