2楼: Originally posted by wizardfan at 2013-02-15 18:27:23
In pearson correlation, -1 or 1 means the exact match, just different directions.

The negative value only means when x increases, y decreases. For example, y = 10 - x , the correlation between x  ...

4楼: Originally posted by wizardfan at 2013-02-17 09:29:48
不是很明白，你所说的b和n是2个不同的参数，之间应该是没有关系的。比如y=ax+b, a和b之间是没有关系的啊。