Table 6.

Total variance explained from PCA for challenges

Components	Initial eigenvalues			Extraction sums of squared loadings			Rotation sums of squared loadings
	Total	% of Variance	Cumulative %	Total	% of Variance	Cumulative %	Total	% of Variance	Cumulative %
1	4.291	35.756	35.756	4.291	35.756	35.756	2.946	24.549	24.549
2	2.175	18.125	53.880	2.175	18.125	53.880	2.687	22.392	46.941
3	1.275	10.629	64.509	1.275	10.629	64.509	2.108	17.568	64.509
4	.879	7.329	71.838
5	.743	6.192	78.030
6	.565	4.704	82.734
7	.494	4.113	86.847
8	.426	3.553	90.400
9	.380	3.163	93.564
10	.309	2.571	96.134
11	.251	2.093	98.228
12	.213	1.772	100.000

Extraction method: principal component analysis