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Percentile Rank DistributionsEntering Groups 20
Error Frequency TableEntering Groups 2224
Score Distribution TableYear Group 29
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43 problems addition anoa arithmetic operation Arithmetic Reasoning Arithmetic Test auto mechanics Automotive Trades beginning the tenth comparison correlation decimal point Division of decimals Division of fractions entering students February group frequency analysis frequency of error given in Table graphically in Figure group contained Group Feb Group June Group GROUP Scores Incorrect Number Incorrect industrial high school knowledge of arithmetic machine shop course machine shop mathematics mean score Median metic multiplication of fractions ninth grade Number Incorrect Number Number Incorrect tried number of problems omic PERCENTILE RANK program of remedial reduction of fractions review and drill Rogers Achievement Test Rogers Test scatter diagram SCORE DISTRIBUTION score intervals Score Sept selected September and June September group shifting of decimal shown graphically standard deviation subtraction technical and industrial Test in Mathematics Test Number Test of Arithmetic tested in June Totals Type Number Incorrect variability York City