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Activity Number:
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17
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Type:
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Topic Contributed
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Date/Time:
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Sunday, August 6, 2006 : 2:00 PM to 3:50 PM
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Sponsor:
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Section on Statistical Education
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| Abstract - #306210 |
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Title:
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Statistical Literacy: Graphs, Studies, and Related Confounders
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Author(s):
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Milo Schield*+
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Companies:
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Augsburg College
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Address:
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1767 Alameda, Roseville, MN, 55113,
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Keywords:
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statistical education ; observational studies
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Abstract:
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Graphs commonly are used to communicate information, but graphs of ratios (average, percentages, and rates) can be difficult to read, even when they are presented accurately. Examples are presented. The prevalence of various graphs is reviewed with their strengths and weaknesses. The use of time-based graphs to summarize longitudinal studies is analyzed for both cohort and entry-exit studies. The use of cross-sectional graphs of ratio data to display associations between groups is reviewed (e.g., groups that have more X tend to have more Y). The use of such group-level associations to support cross-level inference conclusions about individuals is reviewed (e.g., Xs are more likely to have Y than are non-Xs: the ecological fallacy). Finally, the ability of longitudinal and cross-sectional studies to resist the influence of various types of confounders is analyzed.
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- The address information is for the authors that have a + after their name.
- Authors who are presenting talks have a * after their name.
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