def MAV(data):
	"""
	Mean absolute value: the average of the absolute value of the signal.
	
	Parameters
	----------
		data: array-like
			2D matrix of shape (time, data)
		
	Returns
	-------
		MAVData: 1D numpy array containing average absolute value
		
	Reference 
	---------
		Hudgins, B., Parker, P., & Scott, R. N. (1993). A new strategy 
		for multifunction myoelectric control. IEEE Transactions on 
		Bio-Medical Engineering, 40(1), 82–94. 
	"""
	
	MAVData = sum(abs(data))/len(data)
	
	return MAVData