Jerzy J. Letkowski

Doing Statistics with ExcelTM 97: Software Instruction and Exercise Activity Supplement  Marilyn K. Pelosi Theresa M. Sandifer Jerzy J. Letkowski Marilyn K. Pelosi Paperback. Wiley, 1998-02-03 ISBN 9780471251712     Doing Statistics with Excel for Windows Version 5.0: An Introductory Course Supplement for Explorations in Data Analysis  Marilyn K. Pelosi Theresa M. Sandifer Jerzy J. Letkowski Theresa M. Sandifer Jerzy Letkowski Paperback. Wiley, 1996-04-12 ISBN 9780471148999