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	1.79	313	23	0.86	134	15	0.8
2	3.08	500	1	1	158	1	0.99
3	2.56	419	4	0.98	153	4	0.95
4	2.96	483	3	0.99	158	2	0.98

Pearson correlations of survey scores (and p-values)
	mean	(Ps-Ns)/(Ps+Ns)	(Pc-Nc)/(Pc+Nc)
mean	1 (0)	0.963 (0.037)	0.98 (0.02)
(Ps-Ns)/(Ps+Ns)	0.963 (0.037)	1 (0)	0.997 (0.003)
(Pc-Nc)/(Pc+Nc)	0.98 (0.02)	0.997 (0.003)	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)