## 4 Conclusions  
1. An in-depth examination of the mechanical properties of a refractory MoTaNbVW high-entropy alloy was conducted, and the effects of the different testing parameters were assessed.
2. The hardness of the alloy was affected by the two input parameters, i.e., the preset depth and the loading speed. It was found that these two factors have opposite effects. A clear trend of the preset depth on the modulus of elasticity Eit was not ascertained. On the contrary, it was shown that a reduction in the loading speeds leads to lower Eit values, especially for higher indentation depths (1500 and 2000 nm, respectively). The ratio of the absorbed elastic energy, nit, seems to follow the same trend as hardness.
3. The four different statistical analysis techniques verified the preset indentation depth as the most crucial parameter for the obtained hardness values. Additionally, and even though three of the four techniques showed some relation between the loading speed and the Eit, this relation is characterized as weak, and more complex approaches should be taken into consideration. This outcome is also in alignment with the related metallurgical and microstructural postulates.
4. The pre-creep loading stage revealed the presence of serrations, especially at the lower preset depths and the lower loading speeds. These serrations manifest premature creep behaviour at the loading stage.
5. The net creep deformation was found to be affected by all the different testing variables: the creep deformation increases as the present depth increases, the creep duration increases, and the loading speed increases. The maximum shear stress, rmax, i.e., the stress which is directly associated with the dislocation mobility to provide the plastic deformation during creep, shows a similar behaviour as the net creep deformation in reversed order. The stress exponent \(n\) was reduced as the creep duration decreased, the preset depth increased, and the loading speed decreased. The Vcr was also taken into consideration since it is also associated with the number of the associated with the deformation dislocations.
6. The correlation analysis methods showed the importance of the loading speed and the creep duration on the output values, such as the net creep depth, and verified the tendencies expressed in metallurgical and microstructural terms. Correlation analysis also revealed, in some cases, that the involved phenomena governing individual input-output inter-relations may have an extensive degree of complexity, and as such, more sophisticated modeling approaches may be required.  
Conceptualization, A.E.K.,V.S., S.K. ([PERSON]) and K.D.; methodology, A.E.K., V.S. and E.G.; software, S.K. ([PERSON]) and K.D.; validation, A.E.K., V.S., S.K. ([PERSON]), K.D., S.K. ([PERSON]) and E.G.; formal analysis, A.E.K., S.K. ([PERSON]) and V.S.; investigation, V.S., S.K. ([PERSON]), A.E.K. and S.K. ([PERSON]); resources, S.K. ([PERSON]) and A.E.K.; data curation, V.S., S.K. ([PERSON]), K.D., A.E.K. and S.K. ([PERSON]); writing--original A.E.K., S.K. ([PERSON]) and S.K. ([PERSON]); writing--review and editing, A.E.K., S.K. ([PERSON]), S.K. ([PERSON]) and E.G.; visualization, A.E.K. and S.K. ([PERSON]); supervision, A.E.K. All authors have read and agreed to the published version of the manuscript.  
This research received no external funding.