16 is the minimum standard, and 24 is the highest standard, which means your IQ is between 140 and 160. congratulations! Bill Gates has an IQ of only 130. It's just that you and he are not implementing the same set of testing standards.

This should be the German test standard, right? Setting the standard deviation interval estimate is to reduce the error.

Personally, I feel that IQ tests are not of much practical use and are only used as a basic reference.