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))。

Simplicity is prerequisite for reliability.

任何从成瘾中康复的人都会得到我的尊重

It is remarkable that a science which began with the consideration of games of chance should have become the most important object of human knowledge.

"O escritor é um contador de histórias, mas também um criador de mundos."

书籍可以是镜子、窗户和滑动玻璃门。