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))。
杰夫·贝索斯接受了莱克斯·弗里德曼的播客采访
Success is not final, failure is not fatal: it is the courage to continue that counts.
"Some infinities are bigger than other infinities."
The mystery of the room is in the play of light.