Table I. Mean squared error between true...

Table I.

Mean squared error between true and predicted, half-normal distribution

N	σ_μ	σ_υ	δ	Mean squared error
N	σ_μ	σ_υ	δ	Outlier approach	DEA^a
50	0.1	0.1	0.8	0.028	0.025
		0.1	0.9	0.032	0.019
		0.2	0.8	0.006	0.008
		0.2	0.9	0.015	0.008
	0.2	0.1	0.8	0.030	0.017
		0.1	0.9	0.036	0.045
		0.2	0.8	0.053	0.039
		0.2	0.9	0.051	0.032
100	0.1	0.1	0.8	0.005	0.008
		0.1	0.9	0.023	0.002
		0.2	0.8	0.013	0.008
		0.2	0.9	0.003	0.003
	0.2	0.1	0.8	0.043	0.031
		0.1	0.9	0.015	0.019
		0.2	0.8	0.035	0.008
		0.2	0.9	0.032	0.008
200	0.1	0.1	0.8	0.008	0.005
		0.1	0.9	0.011	0.002
		0.2	0.8	0.014	0.004
		0.2	0.9	0.005	0.003
	0.2	0.1	0.8	0.036	0.008
		0.1	0.9	0.028	0.019
		0.2	0.8	0.044	0.011
		0.2	0.9	0.015	0.015

N	σ_μ	σ_υ	δ	Mean squared error
N	σ_μ	σ_υ	δ	Outlier approach	DEA^a
50	0.1	0.1	0.8	0.028	0.025
		0.1	0.9	0.032	0.019
		0.2	0.8	0.006	0.008
		0.2	0.9	0.015	0.008
	0.2	0.1	0.8	0.030	0.017
		0.1	0.9	0.036	0.045
		0.2	0.8	0.053	0.039
		0.2	0.9	0.051	0.032
100	0.1	0.1	0.8	0.005	0.008
		0.1	0.9	0.023	0.002
		0.2	0.8	0.013	0.008
		0.2	0.9	0.003	0.003
	0.2	0.1	0.8	0.043	0.031
		0.1	0.9	0.015	0.019
		0.2	0.8	0.035	0.008
		0.2	0.9	0.032	0.008
200	0.1	0.1	0.8	0.008	0.005
		0.1	0.9	0.011	0.002
		0.2	0.8	0.014	0.004
		0.2	0.9	0.005	0.003
	0.2	0.1	0.8	0.036	0.008
		0.1	0.9	0.028	0.019
		0.2	0.8	0.044	0.011
		0.2	0.9	0.015	0.015

Note:

DEA was calculated using a subsample of data where outliers were excluded. The results are included as a benchmark

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