Table 5. Statistical description of standardized data.

Variable	Sample size	Mean value	Standard deviation	Minimum value	Maximum value
TFP	150	52.4840	11.2899	34.8840	77.6635
DEI	150	51.1314	14.6046	25.2996	89.4383
TP	150	49.9420	14.2785	36.2121	100.3963
TD	150	47.9432	28.7876	5.8856	99.9783
FD	150	48.0834	28.3672	3.2096	99.2884
IS	150	45.3988	21.5884	8.7335	100.0000
OPEN	150	45.3853	20.8818	23.9121	99.4366
RD	150	49.3396	22.2278	24.2445	108.8159