Method
I utilized the analytical hierarchy process (AHP) to compute the coefficients for each criterion. I grade the toilets on a scale of 1 to 10 for each criterion, and then I multiply the ratings by the coefficients. After adding all the products, I calculate the ultimate score for each toilet.
Coefficients
| Cleanliness: | 10 |
| Toilet Paper: | 14 |
| Smell: | 3 |
| Bidet Nozzle: | 13 |
| Soap: | 6 |
| Comfort: | 2 |
| Lighting: | 3 |
| Airiness: | 3 |
| Door Lock: | 27 |
| Flush: | 18 |