You know, I'm not always going to be around to help you...
从n对观测值的样本中获得的相关系数的可能误差是sqrt((1-r²)/(n-2))。
The most important thing is to have a disciplined approach.
未来出行取决于技术与人类需求的平衡。
历史在我们讲述的故事中鲜活存在。