Efficient Hybrid Method of FEA-Based RSM and PSO Algorithm for Multi-Objective Optimization Design for a Compliant Rotary Joint for Upper Limb Assistive Device

Table 16

Friedman Test for the angle.

Response	Number of tests	Median of difference	Sum of Ranks
Mass by AEDE	30	59.1927	62
Mass by the proposed hybrid method	30	59.1928	88
Mass by cuckoo	30	54.0196	30
Overall	90	57.4683
DF	Chi-Square	P-Value
2	56.27	0.001
Null hypothesis: H0: All treatment effects are zero
Alternative hypothesis H1: Not all treatment effects are zero