TITLE:
Statistical Models for Web Pages Usability
AUTHORS:
Saad Subair, Hussah AlEisa
KEYWORDS:
Usability, HCI, Web Pages Interface, Statistical Models, Ergonomics
JOURNAL NAME:
Journal of Data Analysis and Information Processing,
Vol.4 No.1,
February
25,
2016
ABSTRACT: The usability of an interface is a fundamental issue to elucidate. Many researchers argued that
many usability results and recommendations lack empirical and experimental data. In this research,
the usability of the web pages is evaluated using several carefully selected statistical models.
Universities web pages are chosen as subjects for this work for ease of comparison and ease of
collecting data. A series of experiments has been conducted to investigate into the usability and
design of the universities web pages. Prototype web pages have been developed according to the
structured methodologies of web pages design and usability. Universities web pages were evaluated
together with the prototype web pages using a questionnaire which was designed according
to the Human Computer Interactions (HCI) heuristics. Nine (users) respondents’ variables and 14
web pages variables (items) were studied. Stringent statistical analysis was adopted to extract the
required information to form the data acquired, and augmented interpretation of the statistical
results was followed. The results showed that the analysis of variance (ANOVA) procedure showed
there were significant differences among the universities web pages regarding most of the 23
items studied. Duncan Multiple Range Test (DMRT) showed that the prototype usability performed
significantly better regarding most of the items. The correlation analysis showed significant
positive and negative correlations between many items. The regression analysis revealed
that the most significant factors (items) that contributed to the best model of the universities web
pages design and usability were: multimedia in the web pages, the web pages icons (alone) organisation
and design, and graphics attractiveness. The results showed some of the limitations of
some heuristics used in conventional interface systems design and proposed some additional heuristics
in web pages design and usability.