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A NOTE ON THE POWER OF STATISTICAL TESTS IN THE JOURNAL OF EDUCATIONAL MEASUREMENT
Author(s) -
BREWER JAMES K.,
OWEN PATRICIA W.
Publication year - 1973
Publication title -
journal of educational measurement
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.917
H-Index - 47
eISSN - 1745-3984
pISSN - 0022-0655
DOI - 10.1111/j.1745-3984.1973.tb00784.x
Subject(s) - statistical power , statistical analysis , statistics , statistical hypothesis testing , power (physics) , statistical significance , econometrics , psychology , mathematics , computer science , thermodynamics , physics
The power of statistical tests recently appearing in the JEM was determined using the power calculation guidelines proposed by Cohen (1969). All the articles containing tests of significance were surveyed. The results indicated that power was generally below .50 for small effect sizes and above .50 for medium and large effect sizes. A suggestion for reporting statistical results to include power of the tests was made.