diff options
Diffstat (limited to 'numpy/polynomial/_polybase.py')
| -rw-r--r-- | numpy/polynomial/_polybase.py | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/numpy/polynomial/_polybase.py b/numpy/polynomial/_polybase.py index b04b8e66b..5525b232b 100644 --- a/numpy/polynomial/_polybase.py +++ b/numpy/polynomial/_polybase.py @@ -936,11 +936,11 @@ class ABCPolyBase(abc.ABC): diagnostic information from the singular value decomposition is also returned. w : array_like, shape (M,), optional - Weights. If not None the contribution of each point - ``(x[i],y[i])`` to the fit is weighted by ``w[i]``. Ideally the - weights are chosen so that the errors of the products - ``w[i]*y[i]`` all have the same variance. The default value is - None. + Weights. If not None, the weight ``w[i]`` applies to the unsquared + residual ``y[i] - y_hat[i]`` at ``x[i]``. Ideally the weights are + chosen so that the errors of the products ``w[i]*y[i]`` all have + the same variance. When using inverse-variance weighting, use + ``w[i] = 1/sigma(y[i])``. The default value is None. .. versionadded:: 1.5.0 window : {[beg, end]}, optional |