International Journal of
Vocational and Technical Education

  • Abbreviation: Int. J. Voc. Tech. Educ.
  • Language: English
  • ISSN: 2141-534X
  • DOI: 10.5897/IJVTE
  • Start Year: 2009
  • Published Articles: 115

Full Length Research Paper

A multifactor ANOVA study for trainees performance measurement subjected to CADCAM and CAD courses

Ali Chedli Trabelsi1* and Mohamed Ali Rezgui2
  1Jeddah College of Technology, P. O. Box 17608, Jeddah 21494, Saudi Arabia. 2LMSSDT-ESSTT, 5 Av Taha Hussein, Montfleury 1008 Tunis, Tunisia.
Email: [email protected]

  •  Accepted: 05 May 2010
  •  Published: 31 July 2010



The study aims at investigating individual performance of trainees who are subjected to two interrelated courses, namely, CAD and CADCAM. First, a three factor design experiment has been conducted to measure the effects of trainer (A, B), trainee secondary certificate (Scientific and  Industrial) and trainee college esteem (High, Low) on the mean score of CAD and CADCAM obtained by the population of trainees graduating in 2006 through 2008. Altogether, eight combinations having each eight subjects (trainees) have been considered. The second part of the study carried out investigation of 25 trainee's scores gained in CAD and CADCAM training courses by means of a 4-plot exploratory data analysis (EDA) technique. The following regression models which deal with the correlation between Exam and Continuing Assessment scores are established and individual performances of trainees are outlined.


Key words: ANOVA, regression model, normal distribution, hypothesis testing, EDA, CAD/CAM.