Jerzy J. Letkowski

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, 1996 .

Doing statistics with Excel 97 : software instruction and exercise activity supplement

Marilyn K. Pelosi, Theresa M. Sandifer, Jerzy J. Letkowski, 1998 .