# statsmodels.tools.eval_measures.bias¶

statsmodels.tools.eval_measures.bias(x1, x2, axis=0)[source]

bias, mean error

Parameters
x1, x2array_like

The performance measure depends on the difference between these two arrays.

axisint

axis along which the summary statistic is calculated

Returns
bias

bias, or mean difference along given axis.

Notes

If x1 and x2 have different shapes, then they need to broadcast. This uses numpy.asanyarray to convert the input. Whether this is the desired result or not depends on the array subclass.