scipy.stats.mstats.gmean¶
- scipy.stats.mstats.gmean(a, axis=0, dtype=None)[source]¶
Compute the geometric mean along the specified axis.
Returns the geometric average of the array elements. That is: n-th root of (x1 * x2 * ... * xn)
Parameters: a : array_like
Input array or object that can be converted to an array.
axis : int or None, optional
Axis along which the geometric mean is computed. Default is 0. If None, compute over the whole array a.
dtype : dtype, optional
Type of the returned array and of the accumulator in which the elements are summed. If dtype is not specified, it defaults to the dtype of a, unless a has an integer dtype with a precision less than that of the default platform integer. In that case, the default platform integer is used.
Returns: gmean : ndarray
see dtype parameter above
See also
- numpy.mean
- Arithmetic average
- numpy.average
- Weighted average
- hmean
- Harmonic mean
Notes
The geometric average is computed over a single dimension of the input array, axis=0 by default, or all values in the array if axis=None. float64 intermediate and return values are used for integer inputs.
Use masked arrays to ignore any non-finite values in the input or that arise in the calculations such as Not a Number and infinity because masked arrays automatically mask any non-finite values.