def compute_std(num_vertices):
	"""
	Compute the standard deviation of numbers of edges of all graphs with 'num_vertices' vertices.

	:num_vertices: The number of vertices.
	:return: The standard deviation of numbers of edges of graphs with 'num_vertices' vertices.
	"""

	# This function was computed using a linear regression.
	return (0.3375899521271764 * num_vertices) + 0.1575828904704868