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50 Years of ERIC
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Peer reviewed Peer reviewed
ERIC Number: EJ418294
Record Type: CIJE
Publication Date: 1990
Pages: N/A
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: ISSN-0022-4669
When Is a Picture Worth a Thousand p Values? A Comparison of Visual and Quantitative Methods to Analyze Single Subject Data.
Ottenbacher, Kenneth J.
Journal of Special Education, v23 n4 p436-49 Win 1990
The agreement between visual analysis and the results of the split-middle method of trend estimation was examined using a set of 24 stimulus graphs and 30 raters. Results revealed poor agreement between the two methods, and low sensitivity, specificity, and predictive ability for visual analysis in relation to statistical inferences. (JDD)
Descriptors: Elementary Secondary Education, Estimation (Mathematics), Evaluation Methods, Graphs, Predictive Measurement, Reliability, Research Methodology, Statistical Analysis, Statistical Inference, Trend Analysis, Visual Discrimination
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Audience: Researchers
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers: Single Subject Research Design