82 PSYCHOLOGICAL METHODS OF TESTING INTELLIGENCE 



the values for 10 points on the scale, e. g., the quo- 

 tients lying between 1.00 and 91, between 0.81 and 

 0.90, etc. 



TABLE XIII 

 DISTRIBUTION OF MENTAL QUOTIENTS IN DIFFERENT GROUPS OF 



FEEBLE-MINDED 



Not 

 Mental 



Quotient Abs. 

 0.91-1.00.... 

 0.81-0.90. . . . 

 0.71-0.80.... 

 0.61-0.70.... 

 0.51-0.60. . . . 

 0.41-0.50. . . . 

 0.31-0.40... 



Totals... 33 



100 



:9 100 55 100 



111 



100 



Table XIII shows the distribution of the results 

 obtained in this way, both in absolute numbers and 

 in percentages : Figure 1 also shows the distribution 

 of the percentages graphically. 



100 



(.0 



FIG. 1. 



DISTRIBUTION OF MENTAL QUOTIENTS DERIVED FROM 

 CHOTZEN'S RESULTS. 



= not feeble-minded. 



= doubtful. 



...... = moron. 

 = imbecile. 



