Summary of survey scores (median of Likert score was subtracted)
Question	mean	Sum of positives (Ps)	Sum of negatives (Ns)	(Ps-Ns)/(Ps+Ns)	Count of positives (Pc)	Count of negatives (Nc)	(Pc-Nc)/(Pc+Nc)
1	-0.31	61	112	-0.29	45	74	-0.24
2	-0.46	59	133	-0.39	43	74	-0.26
3	-0.73	40	158	-0.6	31	90	-0.49
4	-0.3	67	116	-0.27	49	66	-0.15

Pearson correlations of survey scores (and p-values)
	mean	(Ps-Ns)/(Ps+Ns)	(Pc-Nc)/(Pc+Nc)
mean	1 (0)	0.999 (0.001)	0.961 (0.039)
(Ps-Ns)/(Ps+Ns)	0.999 (0.001)	1 (0)	0.971 (0.029)
(Pc-Nc)/(Pc+Nc)	0.961 (0.039)	0.971 (0.029)	1 (0)

Kendall tau rank correlations of survey scores (and p-values)
	mean	(Ps-Ns)/(Ps+Ns)	(Pc-Nc)/(Pc+Nc)
mean	1 (0.083)	1 (0.083)	1 (0.083)
(Ps-Ns)/(Ps+Ns)	1 (0.083)	1 (0.083)	1 (0.083)
(Pc-Nc)/(Pc+Nc)	1 (0.083)	1 (0.083)	1 (0.083)