Figure 6
The first plot is labeled “p-value less than or equal to 0.01.” The horizontal axis is labeled “A U C score of Warranty,” which ranges from 0.500 to 0.570 with an interval of 0.01. The vertical axis is labeled “Probability density,” which ranges from 0 to 30 with an interval of 5. The histogram shows a high concentration of values at 0.500, with a sharp decline as the A U C score moves away from 0.500. Most data points are concentrated on the lower end of the scale. A vertical dashed line is plotted just after 0.570 on the horizontal axis. The second plot is labeled “p-value less than or equal to 0.01.” The horizontal axis is labeled “A U C score of Durability,” which ranges from 0.500 to 0.560 with an interval of 0.01. The vertical axis is labeled “Probability density,” which ranges from 0 to 20 with an interval of 5. Similar to the first plot, the distribution peaks at 0.500, with a noticeable drop in frequency as the A U C score increases. It has a comparatively thicker peak than the first plot. A vertical dashed line is plotted just after 0.560 on the horizontal axis. The third plot is labeled “p-value less than or equal to 0.01.” The horizontal axis is labeled “A U C score of Product Information Mismatch,” which ranges from 0.500 to 0.540 with an interval of 0.01. The vertical axis is labeled “Probability density,” which ranges from 0 to 20 with an interval of 5. The histogram shows a concentration of values at 0.500, similar to the second plot, but has a thicker section around the peak. A vertical dashed line is plotted just before 0.540 on the horizontal axis. The fourth plot is labeled “p-value less than or equal to 0.01.” The horizontal axis is labeled “A U C score of Performance,” which ranges from 0.500 to 0.550 with an interval of 0.01. The vertical axis is labeled “Probability density,” which ranges from 0 to 25 with an interval of 5. The histogram shows a peak at 0.500, which is very similar to the first plot but has a slightly thicker section around the bottom of the peak. A vertical dashed line is plotted around 0.555 on the horizontal axis. The fifth plot is labeled “p-value less than or equal to 0.01.” The horizontal axis is labeled “A U C score of Selling Price,” which ranges from 0.500 to 0.520 with an interval of 0.005. The vertical axis is labeled “Probability density,” which ranges from 0 to 18 with an interval of 2. This histogram shows a similar distribution pattern to the previous ones, with the majority of values concentrated at 0.500, but it has a comparatively thicker section that has the highest peaks. A vertical dashed line is plotted around 0.522 on the horizontal axis. The sixth plot is labeled “p-value less than or equal to 0.01.” The horizontal axis is labeled “A U C score of Sales Rank,” which ranges from 0.500 to 0.520 with an interval of 0.005. The vertical axis is labeled “Probability density,” which ranges from 0 to 20 with an interval of 5. The histogram shows a peak at 0.500 with a gradual drop-off as the A U C score increases, but it is slightly thinner than the fifth plot. A vertical dashed line is plotted just after 0.520 on the horizontal axis. The seventh plot is labeled “p-value less than or equal to 0.01.” The horizontal axis is labeled “A U C score of Reliability,” which ranges from 0.500 to 0.560 with an interval of 0.01. The vertical axis is labeled “Probability density,” which ranges from 0 to 16 with an interval of 2. The histogram shows a concentration of values at 0.500, with a decreasing frequency as the A U C score increases, but it is thinner than the sixth plot. A dashed vertical line is plotted around 0.557 on the horizontal axis.Permutation test scores. Source: Authors’ own creation