254. Mean high water is the average height of ____
举一反三
- Mean high water is the average height of（）. A: The higher high waters B: The lower high waters C: The lower of the two daily tides D: All high water
- Mean high water is the average height of（）. A: The higher high waters B: The lower high waters C: The lower of the two daily tides D: All high waters
- print(frame['height'].resample('M', kind='period').mean())写成分组的方法中，错误的是： A: print(frame['height'].groupby(frame.index.dt.month).mean()) B: print(frame['height'].groupby(frame.index.month).mean()) C: print(frame['height'].groupby(frame.index.to_period(freq='M')).mean()) D: print(frame.groupby(frame.index.to_period(freq='M'))['height'].mean())
- print(frame['height'].resample('M', kind='period').mean())写成分组的方法中，错误的是： A: print(frame['height'].groupby(frame.index.dt.month).mean()) B: print(frame['height'].groupby(frame.index.month).mean()) C: print(frame['height'].groupby(frame.index.to_period(freq='M')).mean()) D: print(frame.groupby(frame.index.to_period(freq='M'))['height'].mean())
- If we measure the height of everyone in our course to the nearest 0.01 cm, which of the "average" values would likely be least meaningful? A: Mean B: Median C: Mode