. Non-verbal intelligence tests for use in China. 10 36 Non- Verbal Intelligence Tests for Use in China TABLE IIIGrade Distributions of the Pressey Scale Score Grade III Grade IV 85-90 .. 9 80-85 5 8 75-80 9 26 70-75 18 19 65-70 17 17 60-65 23 16 55-60 20 20 50-55 10 10 45-50 13 8 40-45 15 2 35-40 7 2 30-35 3 2 25-30 4 20-25 3 I 15-20 I 10-15 I 5-10 I 0- 0 Number of Cases 149 141 Median 59-375 Quartile The number of Grade III pupils who equal or exceed this score istherefore — + 18 + 9 + 5 or , which is 27 per cent of the number in the third grade, 149. The per ce
. Non-verbal intelligence tests for use in China. 10 36 Non- Verbal Intelligence Tests for Use in China TABLE IIIGrade Distributions of the Pressey Scale Score Grade III Grade IV 85-90 .. 9 80-85 5 8 75-80 9 26 70-75 18 19 65-70 17 17 60-65 23 16 55-60 20 20 50-55 10 10 45-50 13 8 40-45 15 2 35-40 7 2 30-35 3 2 25-30 4 20-25 3 I 15-20 I 10-15 I 5-10 I 0- 0 Number of Cases 149 141 Median 59-375 Quartile The number of Grade III pupils who equal or exceed this score istherefore — + 18 + 9 + 5 or , which is 27 per cent of the number in the third grade, 149. The per cent of overlapping of thethird and fourth grades is, therefore, 27 per cent. It is illustratedby Fig. 5. By this method the per cents of overlapping were computed forGrade III and Grade IV in all the scales. The results were asfollows (for illustrations, see Figs. 6, 7, 8 and 9): ValueNumber Scale Per Cent 0\erlapping OF Grade III over Grade I\ I Dearborn 2 Army Beta 3 Pintner 152 4 Myers 5 Pressey Formation of a Criterion 37. Fig, 5. Showing 27 percent overlapping of Grade IIIover Grade IV In the scores of Pressey Primer acal«
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