计算sigma 1、计算平均值Avg Avg = (a0 + a1 + ……+ an-1) / n 2、计算sigma sigma = sqrt( ( (a0-avg) ^2 + (a1-avg) ^2 + ….. +(an-1 -avg) ^2 ) / (n-1) ) 3、3 sigma = 3* sigma 6 sigma = 6 * sigma Published by 风君子 独自遨游何稽首 揭天掀地慰生平 View all posts by 风君子
