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	0.97	114	7	0.88	93	7	0.86
2	0.08	55	46	0.09	43	41	0.02
3	0.86	102	7	0.87	83	7	0.84
4	-0.12	34	47	-0.16	27	42	-0.22
5	0.52	76	19	0.6	63	15	0.62
6	0.87	105	9	0.84	86	9	0.81
7	0.75	92	9	0.82	75	8	0.81
8	0.78	95	9	0.83	82	9	0.8
9	-0.66	15	88	-0.71	13	68	-0.68
10	0.92	111	10	0.83	83	9	0.8
11	0.65	85	14	0.72	71	12	0.71
12	0.41	63	18	0.56	59	16	0.57
13	0.47	75	23	0.53	67	21	0.52
14	0.4	70	26	0.46	60	23	0.45
15	0.48	72	19	0.58	65	18	0.57
16	0.21	49	26	0.31	45	23	0.32
17	0.65	82	10	0.78	74	9	0.78
18	0.59	77	12	0.73	71	9	0.78
19	0.34	62	25	0.43	59	25	0.4
20	-0.05	41	46	-0.06	39	41	-0.02

Pearson correlations of survey scores (and p-values)
	mean	(Ps-Ns)/(Ps+Ns)	(Pc-Nc)/(Pc+Nc)
mean	1 (0)	0.985 (0)	0.977 (0)
(Ps-Ns)/(Ps+Ns)	0.985 (0)	1 (0)	0.997 (0)
(Pc-Nc)/(Pc+Nc)	0.977 (0)	0.997 (0)	1 (0)

Kendall tau rank correlations of survey scores (and p-values)
	mean	(Ps-Ns)/(Ps+Ns)	(Pc-Nc)/(Pc+Nc)
mean	1 (0)	0.942 (0)	0.912 (0)
(Ps-Ns)/(Ps+Ns)	0.942 (0)	1 (0)	0.971 (0)
(Pc-Nc)/(Pc+Nc)	0.912 (0)	0.971 (0)	1 (0)