Correlations for all pairs of data series (method=pearson)
	totsize	paginaviews	tijd	logins	compendium_v	shared_c	reviewed_c
totsize	1	0.644	0.746	0.536	0.627	0.386	0.734
paginaviews	0.644	1	0.893	0.759	0.962	0.297	0.665
tijd	0.746	0.893	1	0.716	0.893	0.294	0.758
logins	0.536	0.759	0.716	1	0.692	0.25	0.549
compendium_v	0.627	0.962	0.893	0.692	1	0.282	0.638
shared_c	0.386	0.297	0.294	0.25	0.282	1	0.389
reviewed_c	0.734	0.665	0.758	0.549	0.638	0.389	1

Correlations for all pairs of data series with p-values
pair	Pearson r	Spearman rho	Kendall tau
totsize;paginaviews	0.6439	0.7212	0.5315
p-value	(0)	(0)	(0)
totsize;tijd	0.7462	0.8118	0.6171
p-value	(0)	(0)	(0)
totsize;logins	0.5364	0.6588	0.4742
p-value	(0)	(0)	(0)
totsize;compendium_v	0.6267	0.7135	0.5211
p-value	(0)	(0)	(0)
totsize;shared_c	0.3861	0.4032	0.3007
p-value	(0)	(0)	(0)
totsize;reviewed_c	0.7345	0.7899	0.5825
p-value	(0)	(0)	(0)
paginaviews;tijd	0.8928	0.9025	0.7387
p-value	(0)	(0)	(0)
paginaviews;logins	0.7588	0.845	0.6609
p-value	(0)	(0)	(0)
paginaviews;compendium_v	0.9625	0.9665	0.8489
p-value	(0)	(0)	(0)
paginaviews;shared_c	0.2972	0.341	0.2511
p-value	(0)	(0)	(0)
paginaviews;reviewed_c	0.6652	0.7185	0.5273
p-value	(0)	(0)	(0)
tijd;logins	0.716	0.7982	0.609
p-value	(0)	(0)	(0)
tijd;compendium_v	0.8925	0.8995	0.726
p-value	(0)	(0)	(0)
tijd;shared_c	0.2941	0.3296	0.2453
p-value	(0)	(0)	(0)
tijd;reviewed_c	0.758	0.7892	0.5899
p-value	(0)	(0)	(0)
logins;compendium_v	0.6919	0.8018	0.6142
p-value	(0)	(0)	(0)
logins;shared_c	0.2505	0.2795	0.2078
p-value	(0)	(0)	(0)
logins;reviewed_c	0.5488	0.6284	0.4525
p-value	(0)	(0)	(0)
compendium_v;shared_c	0.2821	0.3355	0.2476
p-value	(0)	(0)	(0)
compendium_v;reviewed_c	0.6377	0.6987	0.5025
p-value	(0)	(0)	(0)
shared_c;reviewed_c	0.3895	0.3511	0.2616
p-value	(0)	(0)	(0)