Table 3.

Mean ± standard deviation and p-values between each group’s RMSE values of precision

	Mean ± SD	Group 1	Group 2	Group 3	Group 4	Group 5	Group 6	Group 7
Group 1	0.019 ± 0.009	N/A	0.979	0.001*	0.831	0.995	1	0.006*
Group 2	0.021 ± 0.007	0.979	N/A	0.018*	0.999	0.752	0.872	0.082
Group 3	0.028 ± 0.011	0.001*	0.018*	N/A	0.075	< 0.001*	< 0.001*	0.998
Group 4	0.022 ± 0.009	0.831	0.999	0.075	N/A	0.43	0.586	0.249
Group 5	0.017 ± 0.007	0.995	0.752	< 0.001*	0.43	N/A	1	0.001*
Group 6	0.018 ± 0.008	1	0.872	< 0.001*	0.586	1	N/A	0.001*
Group 7	0.027 ± 0.011	0.006*	0.082	0.998	0.249	0.001*	0.001*	N/A

SD, standard deviation; N/A = “Not applicable”; * p < 0.05