function variance = exponential_01_variance ( )

%*****************************************************************************80
%
%% exponential_01_variance() returns the variance of the Exponential 01 PDF.
%
%  Licensing:
%
%    This code is distributed under the MIT license.
%
%  Modified:
%
%    09 September 2004
%
%  Author:
%
%    John Burkardt
%
%  Output:
%
%    real VARIANCE, the variance of the PDF.
%
  variance = 1.0;

  return
end
