Difference between statistical and practi

• Statistical versus Practical Significance

  Effect Size on Statistical Significance What is Effect Size? To review, when a difference is statistically significant, it does not necessarily mean that it is big, important, or helpful. It simply means you can be confident that there is a difference. Effect size is a measure of the strength of …

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• [PDF File]Methodology in Practice: Statistical Misspecification Testing

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  tests, the data set z (for the primary statistical test) is remodeled to ask this secondary question. Instead of the particular value of each observed residual (one for each data point) one records if the difference between successive observations is positive, a “ ”, or negative, a “ ”. The resid-

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• [PDF File]Quality Improvement and Performance Improvement: …

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  Quality Improvement and Performance Improvement: Different Means to the Same End?1 Thada Bornstein, MEd, Deputy Training Director, Quality Assurance Project ERFORMANCE IMPROVEMENT (PI) is a methodology for improving the quality of institutional and individual performance. PI, a term often used interchangeably with Human

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• [PDF File]What Educated Citizens Should Know About Statistics and ...

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  2. The difference between statistical signi” cance and practi-cal importance, especially when using large sample sizes. 74 The American Statistician, May 2003, Vol. 57, No. 2 ®c2003 American Statistical Association DOI: 10.1198/0003130031630

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• When Is Statistical Significance Meaningful? A Practice ...

  Statistical Significance mation than is currently reported in some professional journal articles. If practitioners are to make intelligent and informed decisions regarding whether a finding is meaningful for them, they must know more than just whether a relationship between variables was …

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• [PDF File]A GUIDE TO STATISTICAL SIGNIFICANCE IN EMS RESEARCH

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  establish statistical significance. Clinical Signifi cance Statistical tests and p-values are mea-sures of probability, not the size or strength of a difference or association. Whether a difference between two subgroups in a sample is practically meaningful is a ques-tion of clinical significance. If a finding isn’t

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• [PDF File]Why the distinction between basic (theoretical) and ...

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  Why the distinction between basic (theoretical) and applied ... Why the distinction between basic (theoretical) and applied (practical) research is important in the politics of science ... is a strong tendency to play down the difference between applied and basic research, or between science and technology, or explicitly to reject it as ...

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• Statistical Equivalence Testing

  a statistically significant difference exists between the mean val-ues when the magnitude of the difference is of no practical im-portance. This is a particular problem when the precision of the measurement is very good; a post hoc explanation of statistical significance may be required when the difference is of no practi-cal importance.

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• The Effect of Sample Size on the Meaning of Significance Tests

  distinction between "statistical" significance and "practi-cal" (or "clinical") significance-a difference between treatments that is just statistically significant at the .05 level may be so small that it is of no clinical significance if the study groups are enormous, whereas a difference between

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• [PDF File]APPENDIX G STATISTICAL CALCULATIONS

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  there is substantial year-to-year variation in these metrics. A slight positive difference between baseline and current value for the 20% least impaired days is found at Big Bend National Park. The TCEQ performed a statistical

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