## 5 Survey Results, Analysis and Discussion  
In this section, we summarise the results of the survey designed to study the satisfaction level of students with MaGraDa. Table 14 displays the socio-demographic characteristics of the students. These demographic data show that the majority of respondents fell into the age group of 17-19 years (72.4%) followed by 20-29 years (25%) and over 29 years (2.6%). The percentage of males (82.8%) was much higher than that of females (12.9%), and was consistent with the total numbers of students taking the four-year degree course in Computer Engineering at the University of Alicante. In addition, a high percentage (81%) of students were enrolled in the first year of university, and 77.6% of students were taking the DM course for the first time. Figure 15 summarises the survey responses in regard to the ease of use and friendliness of MaGraDa. As can be seen, 79.3% of the students expressed a high level of satisfaction with its ease of use, while 87.1% found it easy to learn. Only a small percentage (3.5%) did not consider it well-structured, and 6% did not perceive its graphic mode as intuitive. In view of these results, and to improve its usability and structural organisation, the software was refined based on the feedback from the students, with the aim of meeting the expectations of more of the survey respondents. This feedback was obtained not only from the open-ended question, which included comments and suggestions about MaGraDa, but also through observation and feedback from students in the laboratory classes. The most significant changes that were introduced in regard to usability and user-friendliness, as suggested by the students, and included in the latest version of MaGraDa (reviewed in Section 2.2) are summarised in Table 15. \begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Variable** & **Values** & **Number** & **Percentage** \\ \hline \multirow{4}{*}{**Age**} & 17–19 & 84 & 72.4\% \\  & 20–29 & 29 & 25.0\% \\  & 30–39 & 2 & 1.7\% \\  & 40 or more & 1 & 0.9\% \\ \hline \multirow{4}{*}{**Gender**} & Male & 96 & 82.8\% \\  & Female & 15 & 12.9\% \\ \cline{1-1}  & Rather not say & 5 & 4.3\% \\ \cline{1-1}  & Others (please state) & 0 & 0.0\% \\ \hline \multirow{4}{*}{**Highest university**} & 1 & 94 & 81.0\% \\  & 2 & 19 & 16.4\% \\ \cline{1-1}  & 3 & 2 & 1.7\% \\ \cline{1-1}  & 4 & 1 & 0.9\% \\ \hline \multirow{2}{*}{**First time enrolling**} & Yes & 90 & 77.6\% \\ \cline{1-1}  & & No & 26 & 22.4\% \\ \hline \hline \end{tabular}
\end{table} 
Table 14: Socio-demographic characteristics. \begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Item** & **Dimension 1:** & **Dimension 2:** & **Dimension 3:** & **Dimension 4:** \\  & **Usefulness for** & **Usability and** & **Impact on** & **Content Quality** \\  & **Learning** & **User-Friendliness** & **Performance** & **Content Quality** \\ \hline
**C2** & 0.976 & –0.033 & 0.081 & –0.018 \\
**C3** & –0.015 & –0.011 & 0.280 & 0.711 \\
**C4** & 0.027 & 0.024 & –0.012 & 0.814 \\
**D1** & –0.024 & –0.036 & 0.453 & 0.478 \\
**D2** & 0.764 & 0.122 & 0.299 & 0.038 \\
**D3** & 0.324 & 0.099 & 0.720 & 0.091 \\
**D4** & 0.185 & 0.021 & 0.757 & 0.187 \\
**D5** & –0.083 & 0.011 & 0.734 & 0.091 \\
**D6** & 0.323 & 0.045 & 0.804 & 0.091 \\
**G1** & 0.976 & –0.015 & 0.101 & 0.005 \\
**G2** & 0.976 & –0.024 & 0.096 & 0.014 \\
**G3** & 0.320 & 0.413 & 0.336 & 0.553 \\ \hline \hline \end{tabular}
\end{table} 
Table 13: _Cont._
Regarding the educational content (see Figure 16), the majority of students considered that the information provided by this software was necessary and valuable (around 79%) and was aligned with their expectations for learning graph theory. However, 12.9% of students encountered problems understanding the information about procedures and  
Figure 15: Satisfaction with the ease of use and friendliness.