The players are asked to answer questions on a scale from 1-10, where 1 is the lowest and 10 is the highest evaluation. For instance, if a player answers 9 to the question "The fairways are excellent", then he/she is very satisfied with the fairways.
The answers are then converted to a 100-point scale. If a player has answered 1 to a question, the answer is converted to the score of 0. If the answer is 2, the score is converted to 11, the answer 3 is converted to 22 and so on.
By converting the numbers to a 100-point scale, a scale is created which is more intuitively understandable and easier to work with in practice.
A big advantage to this is that you avoid working with decimal numbers. It can be difficult to make sense of a 0.2 change, while it is intuitively understandable when the change is two index points.