a scale which takes the combined scores of the written test and compares this with the chronological age of the tester. this gives the number called the IQ. 100 is considered average.
Here are the ranges of scores for IQ Tests and what they mean:IQ Range Classification 140 and over ----------- Genius or near genius 120-140 ----------------- Very superior intelligence 110-120...
Marilyn Vos Savant at 228, but that is with modern testing. I doubt she could match DaVinci for talent and inventiveness. Today's tests only measure raw intelligence.