## 4 Results
### Importance and Perception of Technologies' Usage Properties  
Descriptive statistics (mean and standard deviation) of the importance attached to usage properties are shown in the first columns of Table 2. The next columns indicate the mean and standard deviation for the rating given to each technology for these usage properties. The highest mean value in each row is shown in bold and in a green cell, while the lowest one appears in italics and in a red cell. The last row reveals the mean values achieved by each technology for the perception of all its properties. \begin{table}
\begin{tabular}{l c c c c c c c c c c c} \hline \hline  & \multicolumn{10}{c}{**Ratings**} \\ \cline{2-13}  & \multicolumn{2}{c}{**Importance**} & \multicolumn{2}{c}{**2D**} & \multicolumn{2}{c}{**360\({}^{\circ}\)**} & \multicolumn{2}{c}{**AR**} & \multicolumn{2}{c}{**ni_VR**} & \multicolumn{2}{c}{**i_VR**} \\ \cline{2-13}  & **M** & **SD** & **M** & **SD** & **M** & **SD** & **M** & **SD** & **M** & **SD** & **M** & **SD** \\ \hline
**Realism** & 4.62 & 0.61 & 3.77 & 1.05 & 3.96 & 0.91 & 3.69 & 1.42 & 3.92 & 0.75 & 4.03 & 1.40 \\
**Angle** & 4.27 & 0.86 & 2.75 & 1.03 & 4.57 & 0.68 & 3.79 & 1.34 & 3.24 & 1.20 & 3.58 & 1.59 \\
**Usefulness** & 4.22 & 0.82 & 4.10 & 0.98 & 4.26 & 0.68 & 3.92 & 1.38 & 3.79 & 0.91 & 3.82 & 1.29 \\
**Trust** & 4.29 & 0.77 & 3.77 & 0.93 & 4.00 & 0.86 & 3.64 & 1.39 & 3.61 & 0.89 & 3.71 & 1.37 \\
**Easiness** & 4.10 & 0.78 & 4.21 & 1.02 & 3.97 & 0.73 & 3.15 & 1.20 & 3.37 & 0.97 & 3.32 & 1.38 \\
**Comfort** & 4.12 & 0.87 & 4.22 & 0.87 & 4.09 & 0.73 & 3.15 & 1.31 & 3.63 & 0.88 & 3.41 & 1.37 \\
**Satisfactory** & 4.09 & 0.87 & 3.81 & 0.97 & 4.03 & 0.79 & 3.72 & 1.36 & 3.82 & 0.83 & 3.76 & 1.34 \\
**Fun** & 3.06 & 0.93 & 2.69 & 0.83 & 3.78 & 0.75 & 3.95 & 1.47 & 3.68 & 0.84 & **4.18** & 1.25 \\
**Availability** & 3.86 & 0.88 & 4.34 & 0.82 & 4.06 & 0.80 & 3.31 & 1.26 & 3.76 & 1.13 & 2.79 & 1.44 \\
**Interactivity** & 3.62 & 0.81 & 2.25 & 0.99 & 4.21 & 0.82 & 4.21 & 1.38 & 4.00 & 0.93 & **4.39** & 1.29 \\
**Immersivity** & 3.65 & 0.94 & 2.23 & 1.01 & 3.29 & 0.99 & 4.15 & 1.41 & 3.87 & 0.94 & **4.47** & 1.20 \\
**Tangibility** & 3.88 & 0.82 & 2.88 & 1.11 & 3.44 & 1.07 & 3.46 & 1.47 & 3.74 & 0.86 & **3.92** & 1.28 \\ \hline
**MEAN** & & 3.42 & & **3.97** & & 3.68 & 3.70 & 3.76 & \\ \hline \hline \end{tabular}
\end{table} 
Table 2: Perception of technologies’ usage properties. Rates for their importance and for the level achieved with each technology. The highest mean value in each row is shown in bold and in a green cell, while the lowest one appears in italics and in a red cell. This information is also shown graphically in Figure 6, where the importance attached to each property is indicated on the \(X\) axis, and the ratings for each technology appear on the \(Y\) axis. Properties are designated by their initials, which have a grey background if significant differences are detected between technologies. Firstly, four general importance levels are distinguished. At the first level (importance > 4.5), _Realism_ is located. Therefore, the property considered to be the most important one is that technologies offer a realistic representation with sufficient quality and resolution according to the expression used on the form (see Table 1). At a second level (importance between 4 and 4.30), properties seem to generally refer to comfortable, reliable, and satisfactory use. In more detail, the properties related to functionality and reliability (_Trust_, _Angle_, _Usefulness_) have importance levels between 4.20 and 4.30 (closer to _Realism_, both for score and concept), while the properties related to a comfortable and satisfactory usage concept (_Comfort_, _Easiness_, _Satisfactory experience_) have lower ratings, between 4 and 4.20 points. The properties on the third level of importance (between 3.5 and 4) are considered the media characteristics of interactive technologies: _Tangibility_ and _Availability_ as the most important ones (3.85-3.9), and _Immersivity_ and _Interactivity_ with importance levels of 3.6-3.65 points.