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ERIC Number: EJ500490
Record Type: CIJE
Publication Date: 1994
Pages: N/A
Abstractor: N/A
ISBN: N/A
ISSN: ISSN-0013-1644
EISSN: N/A
Quick Power Estimates for Comparing Proportions.
Hopkins, Kenneth D.; Chappell, David
Educational and Psychological Measurement, v54 n4 p903-12 Win 1994
Quick power estimates for detecting a difference in two population proportions are expedient during early stages of research planning. Such estimates are tabled and graphed in this article. They are shown to be conservative but accurate for most research situations when proportions fall in the range of 0.25 to 0.75. (SLD)
Descriptors: Comparative Analysis, Data Collection, Estimation (Mathematics), Graphs, Identification, Planning, Power (Statistics), Ratios (Mathematics), Research Design, Tables (Data)
Publication Type: Reports - Evaluative; Journal Articles
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Grant or Contract Numbers: N/A