Figure 2
The line graph plots Rank on the horizontal axis from 1 to 9 and Relative importance from 0 to 100 on the vertical axis, with major ticks at 20, 40, 60, 80 and 100. Circular data markers are connected by straight line segments. Relative importance is about 99 at rank 1, 95 at rank 2, 86 at rank 3, 72 at rank 4, 71 at rank 5, 70 at rank 6, 27 at rank 7, 20 at rank 8 and 0 at rank 9. A vertical dashed reference line passes through rank 3 and extends from the baseline to the rank 3 marker. The plotted values decrease gradually from ranks 1 to 3, fall more sharply to rank 4, remain nearly level from ranks 4 to 6, drop steeply between ranks 6 and 7, then decrease further through ranks 8 and 9.Elbow criterion based on ranked MaxDiff importance scores