Average task times in usability tests: What to report?

Conference on Human Factors in Computing Systems - Proceedings

Volumn 4, Issue , 2010, Pages 2347-2350

  Sauro, Jeff ^a   Lewis, James R ^b  

^a ORACLE CORPORATION   (United States)

^b IBM   (United States)

Author keywords

geometric mean; median; monte carlo simulations; task times; usability evaluation

Indexed keywords

GEOMETRIC MEAN; MONTE CARLO SIMULATION; POPULATION CENTERS; SAMPLE MEDIAN; USABILITY EVALUATION; USABILITY STUDIES; USABILITY TESTS;

COMPUTATIONAL FLUID DYNAMICS; COMPUTER SIMULATION; COSMIC RAY DETECTORS; GEOMETRY; HUMAN ENGINEERING; POPULATION STATISTICS; USABILITY ENGINEERING;

MONTE CARLO METHODS;

EID: 77954019078     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.1145/1753326.1753679     Document Type: Conference Paper

References (10)

1. Andrews, D. F., Bickel, P. J., Hampel, F. R., Tukey, J. W., & Huber, P. J. Robust estimates of location: Survey and advances. Princeton, NJ: (1972). Princeton University Press.
2. Blalock, H. M. Social statistics. (1972). New York, NY: McGraw-Hill.
3. Cordes, R The effects of running fewer subjects on time-on-task measures. International Journal of Human-Computer Interaction, 5(4), (1993) 393-403.
4. Myers, J. L, Fundamentals of experimental design. . (1979) Boston, MA: Allyn and Bacon.
5. Miller, J. A warning about median reaction time. Journal of Experimental Psychology: Human Perception and Performance, 14, (1988) 539-543.
6. Nielsen, J. Quantitative Studies, How Many Users to Test? (2006) Last viewed September 13, 2009, www.useit.com/alertbox/quantitative-testing.html.
7. Sauro, J. & Lewis J. R Correlations among Prototypical Usability Metrics: Evidence for the Construct of Usability. In Proc CHI 2009 (pp. 1609-1618).
8. Sauro, J Graph and Calculator for Confidence Intervals for Task Times Last viewed Sept. 10, 2009, http://www.measuringusability.com/time-intervals.php
9. Tukey, J. W The future of data analysis. Annals of Mathematical Statistics, 33(1), (1962) pp 1-67.
10. Walpole, R. E. Elementary statistical concepts. (1976) New York, NY: Macmillan.