题目
ACCN-3290-02Sp25 Week 3 Quiz
单项选择题
选项
A.It calculates the cumulative average
B.It returns the sum of all Sales
C.It calculates the cumulative sum of the Sales column
D.It calculates the moving average of Sales
查看解析
标准答案
Please login to view
思路分析
To analyze what df['Sales'].expanding().sum() does, we need to consider how the expanding() and sum() methods behave together.
Option 1: 'It calculates the cumulative average' - This is not correct. expanding().sum() yields c......Login to view full explanation登录即可查看完整答案
我们收录了全球超50000道考试原题与详细解析,现在登录,立即获得答案。
类似问题
What would be the answer of this cummulative summation in NumPy? arr = np.array([1,2,3]) print(np.cumsum(arr))
In a consumer society, many adults channel creativity into buying things
Economic stress and unpredictable times have resulted in a booming industry for self-help products
People born without creativity never can develop it
更多留学生实用工具
希望你的学习变得更简单
加入我们，立即解锁 海量真题 与 独家解析，让复习快人一步！