| 对七星彩开奖号码的随机性卡方检验 |
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| 引用本文： | 刘永君. 对七星彩开奖号码的随机性卡方检验[J]. 河南机电高等专科学校学报, 2012, 20(4): 34-37 |
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| 作者姓名： | 刘永君 |
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| 作者单位： | 河南机电高等专科学校,河南新乡,453000 |
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| 摘 要： | 以我国连续200期七星彩开奖号码为样本,采用卡方检验法检验每个字符出现的概率是否相同,并检验同一期开奖号码中字符重复出现的次数是否在可接受的范围之内。统计检验表明：我国七星彩的开奖号码具有较好的随机性。
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| 关 键 词： | 组合 排列 概率 卡方检验 |
Chi - square Test for the Randomness of Chinese 7 - star Lottery |
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| LIU Yong-jun. Chi - square Test for the Randomness of Chinese 7 - star Lottery[J]. Journal of Henan Mechanical and Electrical Engineering College, 2012, 20(4): 34-37 |
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| Authors: | LIU Yong-jun |
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| Affiliation: | LIU Yong-jun (Henan Mechanical and Electrical Engineering College, Xinxiang 453000,China) |
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| Abstract: | This paper polls consecutive 200 period Chinese 7 - star lottery winning numbers as a sample, using Chi - square test method to test whether each character has the same probability appears in the winning number and to test recurring characters repeat times in a winning numbers ,Within the aeeeptable range. Statistical tests result shows that Chinese 7 - star lottery winning number was randomly. |
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| Keywords: | combination permutation probability chi - square test |
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