题解 | #牛客用户刷题量的方差与提交次数的标准差#
牛客用户刷题量的方差与提交次数的标准差
https://www.nowcoder.com/practice/4ca5272bc96c453b9c70fccc039a0679
import pandas as pd
now = pd.read_csv('Nowcoder.csv')
#var() 求方差
print(round(now['Num_of_exercise'].var(), 2))
#std()求标准差
print(round(now['Number_of_submissions'].std(), 2))
