qspec.average  (  a ,  std = None ,  cov = None ,  axis = None  )[source]

Parameters:

aarray_like

The sample data.

stdarray_like

An array of standard deviations associated with the values in 'a'. If specified, the weighted average of the uncorrelated sample data and its standard error is returned.

covndarray | Iterable

The covariance matrix associated with the values in 'a'. If specified, it overrides 'std' and the weighted average of the correlated sample data and its standard error is returned. If no axis is specified, 'cov' must have shape (a.size, a.size) with elements associated with the values in the flattened 'a', otherwise cov must have either shape (a.shape[axis], a.shape[axis]) or (..., a.shape[axis - 1], a.shape[axis], a.shape[axis], a.shape[axis + 1], ...).

axisint

The axis along which the average is computed.

Returns:

out(ndarray, ndarray)

The average and its standard error for a given sample 'a' along the specified 'axis'.