Table 1.

P-values of the one-sample two-sided Cox-Stuart (C-S) and Mann-Kendall (M-K) trend tests for the null hypothesis of no trend in the transformed standard deviations under several transformation or regularization methods. Results are shown for the synthetic dataset from model 14.

	RAW	LOG	MVR	CVSR	VSN
C-S	1.392 × 10–12	2.811 × 10–21	0.097	0.097	2.418 × 10–30
M-K	0	0	0.057	0.548	0

	LOESS	CSS	QUANT	GAMLSS
C-S	4.954 × 10–7	1.131 × 10–23	2.665 × 10–12	8.785 × 10–2
M-K	2.210 × 10–15	0	0	3.714 × 10–7