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	0.86	151	15	0.82	121	14	0.79
2	0.66	118	14	0.79	102	12	0.79
3	0.92	163	17	0.81	130	15	0.79
4	0.76	134	13	0.82	117	13	0.8
5	0.5	100	20	0.67	90	20	0.64
6	0.68	131	23	0.7	111	21	0.68

Pearson correlations of survey scores (and p-values)
	mean	(Ps-Ns)/(Ps+Ns)	(Pc-Nc)/(Pc+Nc)
mean	1 (0)	0.814 (0.049)	0.765 (0.076)
(Ps-Ns)/(Ps+Ns)	0.814 (0.049)	1 (0)	0.988 (0)
(Pc-Nc)/(Pc+Nc)	0.765 (0.076)	0.988 (0)	1 (0)

Kendall tau rank correlations of survey scores (and p-values)
	mean	(Ps-Ns)/(Ps+Ns)	(Pc-Nc)/(Pc+Nc)
mean	1 (0.003)	0.552 (0.126)	0.447 (0.227)
(Ps-Ns)/(Ps+Ns)	0.552 (0.126)	1 (0.006)	0.849 (0.024)
(Pc-Nc)/(Pc+Nc)	0.447 (0.227)	0.849 (0.024)	1 (0.01)