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CHAPTER PAGE I Introduction
Conditions op the Investigation
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11 months 24 per cent 25 Range 42 months 63 months ability and achievement accomplishment quotient arith Arithmetic A. A. 24 arithmetic age arithmetic quotient arithmetic-age group average difference basis for sectioning basis of classification best basis cent in reading chronological age computation and reasoning deviation of 11 differentiated educa educational age educational quotient educational-age group educational-age month grade placement group into sections Group into X homogeneity in terms homogeneous sections intelligence quotient Intelligence Tests mental age mental-age group metic months in 1924 months to 12 months—from overlapping of 24 percentage of overlapping plans of classification pupils possessing Range in Months range in reading Range Mo range of achievement range was reduced ranges and dispersion reading age reading and arithmetic Reading R. A. 24 Results of Sectioning Sectioning the Mental-Age standard deviation Stanford Achievement Test tion total fifth-grade group total group X 25 Range year's