Northern Illinois University

Department of Biological Sciences

Professor Jerrold H. Zar - Retired Faculty - Ecology and Evolution

photo of Jerrold H. Zar

Professor Emeritus

Educational Background

Ph.D., 1967, University of Illinois at Urbana-Champaign 

M.S., 1964, University of Illinois at Urbana-Champaign 

B.S., 1962, Northern Illinois University

Fields of Interest: Statistical analysis of biological data; physiological adaptations of animals to their environment. 

Contact: Jerrold H. Zar 
jhzar@niu.edu
(815) 753-7844
Dept. of Biological Sciences 
Northern Illinois University 
DeKalb, IL 60115

Spelling Checker Poem

A poem demonstrating the failings of spelling checkers, written in 1992, was entitled "Candidate for a Pullet Surprise" (and is often referred to as "Owed to a Spelling Checker"). It has appeared on the Internet thousands of times, on Web pages and in e-mails, and also in books and articles about writing. Very often when it appears it is abbreviated or otherwise tampered with, and very often it is presented as authored by "Anonymous" or otherwise without attribution.

Representative Publications

Zar, Jerrold H. 1999. Biostatistical Analysis. 4th Edition. Prentice-Hall, Inc., Upper Saddle River, NJ. 931 pp. 

Brower, James E., Jerrold H. Zar, and Carl N. von Ende. 1998. Field and Laboratory Methods for General Ecology. 4th. Edition. McGraw-Hill Companies, Inc., Boston, MA, 273 pp. + diskette. 

Zar, Jerrold H. 1998. Spearman Rank Correlation, vol. 5, pp. 4191-4196. In Peter Armitage and Theodore Colton (eds.-in-chief), Encyclopedia of Biostatistics. John Wiley and Sons, Chichester, England. 

Zar, Jerrold H. 1997. Master's-Degree Programs: Volume, Variety, Versatility, and Vitality, pp. 89-101. In Frank A. Einhellig (ed.), Proceedings of the 53rd Annual Meeting, Midwestern Association of Graduate Schools, Chicago, IL. 

Ghent, Arthur W. and Jerrold H. Zar. 1992. Runs of Two Kinds of Elements on a Circle: A Redevelopment, with Corrections, from the Perspective of Biological Research. American Midland Naturalist 128:377-396. 

Zar, Jerrold H. 1992. The University Graduate Studies Officer and the University Research Officer. SRA Journal 24:37-46. [Society of Research Administrators] 

Zar, Jerrold H. 1989. Microcomputer determination of distance and initial direction of great circle paths. Journal of Field Ornithology 60:520-522. 

Green, Herman G. and Jerrold H. Zar. 1989. A BASIC program to compute the sensitivity, specificity, and predictive values of screening tests. Educational and Psychological Measurement 49:147-150. 

Zar, Jerrold H. 1987. A fast and efficient algorithm for the Fisher exact test. Behavior Research Methods, Instruments, & Computers 19:413-415.