Box, Line, and Midgap Plots: Effects of Display Characteristics on the Accuracy and Bias of Estimates of Whisker Length.

Stock, William A.; Behrens, John T.

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Peer reviewed

ERIC Number: EJ423880

Record Type: Journal

Publication Date: 1991

Pages: N/A

Abstractor: N/A

ISBN: N/A

ISSN: ISSN-0362-9791

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Box, Line, and Midgap Plots: Effects of Display Characteristics on the Accuracy and Bias of Estimates of Whisker Length.

Stock, William A.; Behrens, John T.

Journal of Educational Statistics, v16 n1 p1-20 Spr 1991

The accuracy and bias of estimates of whisker length based on box, line, and midgap plots were examined. For each type of graph, 20 different undergraduates (n=60) viewed 48 single-plot graphs. Whisker-length estimates for box and line plots were more accurate and less biased than those for midgap plots. (TJH)

Descriptors: Comparative Analysis, Estimation (Mathematics), Graphs, Higher Education, Pictorial Stimuli, Spatial Ability, Statistical Bias, Undergraduate Students

Publication Type: Journal Articles; Reports - Research

Education Level: N/A

Audience: N/A

Language: English

Sponsor: N/A

Authoring Institution: N/A

Grant or Contract Numbers: N/A

Author Affiliations: N/A