import math as ma a=list(map(float,input().split())) x=0#样本均值 for i in a: x+=i x/=len(a) s=0 for i in a: s+=ma.pow((x-i),2) s/=(len(a)-1) print("样本均值为: "+x+"\n") print("样本方差为: "+s+"\n")
输入数据为: 6.0 5.7 5.8 6.5 7.0 6.3 5.6 6.1 5.0