BTS_Challenge_Course D1第3.1-3.4节（线性回归）＃60daysofudacity D2第3.5-3.8节（线性回归）＃60daysofudacity D3第3.9-3.12节（线性回归）＃60daysofudacity D4第3.13-3.16节（多元线性回归）＃60daysofudacity D5第3.17-3.20节（Alteryx）＃60daysofudacity D6第3.21-3.24节（建立模型）＃60daysofudacity D7熊猫＃6