Warning: file_put_contents(/home/www/wwwroot/ndsq.cn/cache/084a881018b04f6369fcbb11727c31ea.txt): failed to open stream: No space left on device in /home/www/wwwroot/ndsq.cn/index.php on line 55 Chebyshev's inequality英英字典_Chebyshev's inequality剑桥英语解释_Chebyshev's inequality柯林斯英文解释_開心英語字典_柠咚词
1. N the fundamental theorem that the probability that a random variable differs from its mean by more than k standard deviations is less than or equal to 1/k² 契比雪夫不等式[statistics]