How do you calculate garret ranking?

Garret ranking is a statistical method used to rank items based on their scores in multiple criteria. To calculate it, first, assign ranks to each item within each criterion, then compute the average of these ranks for each item. The final ranking is determined by ordering the items based on their average ranks, with lower average ranks indicating higher overall performance. This method helps in reducing the bias that may arise from having a single criterion dominate the ranking process.