Figure 2.
The set of four density plots shows predictive error distributions for N W O M 1, N W O M 2, N W O M 3, and N W O M 4, arranged in a two-by-two grid. The upper-left plot is titled Distribution of predictive error of N W O M 1, with the vertical axis labelled Density and values rising to about 0.6; the curve has small rises around minus 2 and minus 1, a main peak near 0, and a secondary peak near 1, with N equals 294, and Bandwidth equals 0.238. The upper-right plot is titled Distribution of predictive error of N W O M 2, with the vertical axis labelled Density and values rising above 0.6; the curve has a small rise around minus 1, a main peak just below 0, and a secondary peak near 1, with N equals 294 and Bandwidth equals 0.2181. The lower-left plot is titled Distribution of predictive error of N W O M 3, with the vertical axis labelled Density and values rising to about 0.25; the curve extends from about minus 6 to 4, rises through negative values, peaks below 0, and has another high point around 1.5, with N equals 294, and Bandwidth equals 0.3951. The lower-right plot is titled Distribution of predictive error of N W O M 4, with the vertical axis labelled Density and values rising to about 0.4; the curve rises from about minus 4, increases through minus 2 and 0, reaches a main peak around 1, and then falls towards 2, with N equals 294 and Bandwidth equals 0.3243.Distribution of prediction error