Based on Statistic Analysis, we have 3 (three) tools that will act as the indicators
1. Grubb Test (G)
The indicator of how to find ICI outliers numbers.
a. if G > bottom line, that find ICI outliers numbers
b. if G < bottom line, there is no ICI outlier numbers
2. Mean Percentage Average Deviation (MAPD):
The indicator of how big the percentage deviation between Coalindo assessment compared with Argus assessment
a. if MAPD < 5%, the deviation is good
b. if MAPD between 5% - 12%, the deviation is moderate
c. if MAPD > 12%,the deviation is poor
3. Coefficient Correlation (r):
The indicator of how far/close Coalindo Assessment in the following market or otherwise.
a. if r > 0.5, the coefficient correlation is good.
b. if r < 0.5, the coefficient correlation is bad