xkcd

英文频道 中文频道

XKCD中文站,一个关于浪漫、隐喻、数字、以及语言的线上漫画。

Change in Slope

Change in Slope
Squinting at a graph is fine for getting a rough idea of the answer, but if you want to pretend to know it exactly, you need statistics.

原文链接