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	1.77	294	7	0.95	142	6	0.92
2	1.99	326	4	0.98	149	2	0.97
3	1.49	252	10	0.92	134	7	0.9
4	1.78	295	6	0.96	148	3	0.96

Pearson correlations of survey scores (and p-values)
	mean	(Ps-Ns)/(Ps+Ns)	(Pc-Nc)/(Pc+Nc)
mean	1 (0)	0.989 (0.011)	0.879 (0.121)
(Ps-Ns)/(Ps+Ns)	0.989 (0.011)	1 (0)	0.938 (0.062)
(Pc-Nc)/(Pc+Nc)	0.879 (0.121)	0.938 (0.062)	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)