Table 2.

Scale for the PF-WASPAS evaluations

	Interval valued fuzzy number
Linguistic terms	${\mu }_L$	${\mu }_U$	$v_L$	$v_u$
Very poor—VP	0.12	0.27	0.66	0.81
Poor—P	0.21	0.36	0.57	0.72
Medium poor—MP	0.30	0.45	0.48	0.63
Fair -F	0.39	0.54	0.39	0.54
Medium good—MG	0.48	0.63	0.30	0.45
God—G	0.57	0.72	0.21	0.35
Very good -VG	0.66	0.81	0.12	0.27