Improvement of Open Source Software Usability: An Empirical Evaluation from Developers' Perspective

Table 2

Hypotheses testing using parametric and nonparametric correlation coefficients.

Hypothesis	Usability factor	Pearson correlation coefficient	Spearman correlation coefficient
H1	Users requirements	0.264*	0.480*
H2	Usability experts opinion	0.084**	0.122**
H3	Incremental design approach	0.274*	0.420*
H4	Usability testing	0.338*	0.390*
H5	Knowledge of UCD methods	0.439*	0.485*

*Significant at 𝑃<.05. **Insignificant at 𝑃>.05.