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English to Chinese translations [PRO]
Science - Mathematics & Statistics / 函数 | | English term or phrase: FREQUENCY(R, B) | Returns a frequency distribution for values R with a set of intervals B.
想请教下，这里的 with a set of 该怎么理解，主要是不太明白这个 FREQUENCY(R, B) 函数的作用，这里有个参考，但没看明白：http://www.ggy.com/HTMLhelp/axis/42603.htm |
| mdshrekKudoZ activityQuestions: 61 ( 2 open) ( 2 without valid answers) Answers: 0
| Local time: 22:36
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| | 频率分布函数 | Explanation:
R和B为函数的两个参数，而这两个参数分别是一个集合。其中，R为数值集合，而B为区间集合。所谓区间集合，就是其中的数，比如，{80，90}就把数据范围分为三个区间，即〈80，〉=80但〈90，和〉=90，所返回的函数值是一个数列或数组，即是R的值落在上述区间内的个数，即在该各区间内的分布。这是典型的频率分布函数。
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Note added at 39 mins (2007-11-06 08:28:25 GMT)
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简单地说，就是数值集合R中的元素在区间集合B中各区间上的分布。 |
| Selected response from:
orientalhorizon
Local time: 22:36
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36 mins confidence:  peer agreement (net): +2 | frequency(r, b) 频率分布函数
Explanation:
R和B为函数的两个参数，而这两个参数分别是一个集合。其中，R为数值集合，而B为区间集合。所谓区间集合，就是其中的数，比如，{80，90}就把数据范围分为三个区间，即〈80，〉=80但〈90，和〉=90，所返回的函数值是一个数列或数组，即是R的值落在上述区间内的个数，即在该各区间内的分布。这是典型的频率分布函数。
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Note added at 39 mins (2007-11-06 08:28:25 GMT)
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简单地说，就是数值集合R中的元素在区间集合B中各区间上的分布。
| orientalhorizon
Local time: 22:36
Works in field
Native speaker of:  Chinese
PRO pts in category: 4
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59 mins confidence:  peer agreement (net): +1 | frequency(r, b) TRY
Explanation:
严格的说，其实这是个频数分布函数。即统计各个数的出现次数。而频率值一定要小于等于1的。具体的说，就是用数组B中的数将数组R中的数分成n个区间（n=数组B中元素个数+1）。返回的值分别是数组R中的数分别落在这n个区间中的数的个数。
例如，R=70, 79, 80, 61, 83, 93, 88, 97，B=80, 90，则B分成三个区间：即小于80的区间，有三个数70，79，61，小于90的区间，有三个数，80，83，88，三个数和大于等于90的数，两个，93，97，从而返回一个数组3，3，2
大致如此，供参考
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Note added at 4 hrs (2007-11-06 12:34:53 GMT)
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如果严格按数学上的概念来说，这里的3，3，2就是指的频数，3/8,3/8,2/8则是指频率。因为我看这里的背景是数学中的统计学分支，所以按说应该用严格的术语。不过，在非学术性的场合，用频率就可以了。
|  J.H. Wang
China
Local time: 22:36
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Native speaker of: Chinese
PRO pts in category: 3
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| Changes made by editors |
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| Dec 9, 2007 - Changes made by orientalhorizon: | | Created KOG entry | KudoZ term => KOG term |
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