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))。
写作的艺术就是发现你所相信的艺术。
The Internet is a network of networks, governed by the principle of interoperability.
数字计算机背后的思想可以通过说这些机器旨在执行任何可以由人类计算机完成的操作来解释。
Let me tell you the secret that has led me to my goal. My strength lies solely in my tenacity.
真正的音乐来自于内心,而不是技巧。