Figure 2
The figure shows two graphs in a vertical arrangement. The top panel is a histogram. The horizontal axis ranges from 0 to 50 in increments of 10, and the vertical axis ranges from 0 to 60 in increments of 20. The highest bar is at 32, with a value of 58. The next highest bar is at 21, with a value of 50. All other bars are below 35. Most of the tall bars are between 12 and 35 on the horizontal axis. The bars at the ends are short, with values less than 10. A dashed bell curve is overlaid on the histogram. It rises in a concave-up manner, peaks at (25, 25), and falls symmetrically. The bottom panel is a scatter plot with dots distributed across the graph area. The horizontal axis ranges from 0 to 50, and the vertical axis ranges from negative 20 to 40. A dashed horizontal line runs through the vertical axis value of 0. The dots are mostly around the 0 line. Some of the points are (9, negative 3.63), (16.8, 15.6), (29.9, negative 13.9), (31.78, 38.0), and (51.88, 5.02). Note: All numerical values are approximated.Fit of the Gaussian model with the adoption curve, and the corresponding residual plot for the Portuguese case. Source: Figure by authors