擅长:python、mysql、java
<p>如果你想从两个数组中猜出最合适的斜率,这是最经典的答案,如果X和Y是数组:</p>
<pre><code>import numpy as np
from __future__ import division
x = np.array([1,2,3,4]
y = np.array([1,2,3,4])
slope = ((len(x)*sum(x*y)) - (sum(x)*sum(y)))/(len(x)*(sum(x**2))-(sum(x)**2))
</code></pre>