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TEST CONSTRUCTION—A TECHNIQUE FOR PRODUCING AND VERIFYING A NORMAL DISTRIBUTION OF ITEMS
Author(s) -
FRANCE NORMAN
Publication year - 1968
Publication title -
british journal of educational psychology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.557
H-Index - 95
eISSN - 2044-8279
pISSN - 0007-0998
DOI - 10.1111/j.2044-8279.1968.tb01977.x
Subject(s) - raw score , test (biology) , percentile , statistics , psychology , percentile rank , table (database) , standardization , raw data , mathematics , computer science , data mining , paleontology , biology , operating system
S ummary . Suggestions are offered for facilitating the standardization and interpretation of test scores. By using a table for transformating percentiles into equivalent normalized standard scores it is possible to apply a simple approximate test for a normal distribution. If the graph showing the relation of the raw scores to the normalized standard score is a straight line, then the raw scores are themselves normally distributed. The same table enables the order of difficulty of test items to be more precisely described so that a selection of items can be made which will produce a normal distribution of scores in the final form of the test.