Submitted on: 04 May 2006.
Revised on: 09 June 2006.
Accepted on: 03 August 2006.
___________________AMERICAN STATISTICIAN---TAYLOR & FRANCIS INC
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Submitted on: 18 October 2005.
Revised on: 12 December 2005.
Accepted on: 07 January 2006.
___________________AMERICAN STATISTICIAN---TAYLOR & FRANCIS INC
Submitted on: 11 August 2003.
Revised on: 09 November 2003.
Accepted on: 17 December 2003.
___________________AMERICAN STATISTICIAN---TAYLOR & FRANCIS INC
Submitted on: 31 March 1998.
Revised on: 17 July 1998.
Accepted on: 11 September 1998.
___________________AMERICAN STATISTICIAN---TAYLOR & FRANCIS INC