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
nowcoder = pd.read_csv("Nowcoder.csv", sep=",")
print(round(nowcoder["Num_of_exercise"].var(), 2))
print(round(nowcoder["Num_of_exercise"].std(), 2))
