#Python計算平均值與標準差
#Python 3.X 程式語言特訓教材 6-47頁
def main():
alst=[]
for j in range(1,11):
num=eval(input())
alst.append(num)
#print(alst)
m,s=meanAndsd(alst)
print(“mean = %.2f, standard dedeviation = %.2f”\
%(m,s))
def meanAndsd(alst):
total = sum(alst)
mean = total/len(alst)
ss=0
for j in range(len(alst)):
ss=ss+(alst[j]-mean)**2
sd=(ss/(len(alst)-1))**0.5
return mean,sd
main()









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