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[DOC File]Sampling and Sample Size - Columbia University
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Statistical significance versus practical/clinical significance (or importance): Statistical significance means that a difference is “real” and not just due to sampling variability or chance. That is, the difference would persist if the study were repeated with new random samples.
difference between statistical and practical significance

[DOC File]A Spreadsheet for Deriving a Confidence Interval, Mechanistic
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Statistical significance becomes less conservative with suboptimal sample sizes: for example, a change in the mean of 1 unit with a threshold for benefit of 0.2 units is a moderate effect using a modified Cohen scale (Hopkins, 2006b), but if this effect was only just significant (p = 0.04) because of a small sample size, the risk of harm would ...
clinical vs statistical significance

[DOC File]Evidence-Based Practices in Online Learning: A Meta ...
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Among the other 10 practices, which were not part of the conceptual model, none attained statistical significance. When the five K-12 studies are removed from the analysis, two additional practices are found to be statistically significant moderators of the effects of online learning – time spent on task and opportunities for face-to-face ...
examples of statistical significance

[DOC File]Guide to calculating, interpreting and using effect size
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The statistical significance is usually calculated as a ‘p-value’, the probability that a difference of at least the same size would have arisen by chance, even if there really were no difference between the two populations. ... Kirk, R.E. (1996) ‘Practical Significance: A concept whose time has come’. Educational and Psychological ...
statistical and practical results

[DOC File]MULTIPLE REGRESSION AND CORRELATION
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The F tests of statistical significance for the sets of variables and the set of (c-1)(d-1) interaction variables are identical to the corresponding F tests in analysis of variance if the denominator of Formula (4) is replaced by the Mean Squares Within Cells for all three tests.
statistical significance test

[DOC File]Probabilities of Clinical or Practical Significance
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The meaning is enhanced by expressing the probabilities in qualitative terms such as unlikely, almost certainly, and so on. I present here a table for assigning such terms to probabilities, and a link to a slide show on statistical vs clinical or practical significance. KEYWORDS: effect magnitude, P value, statistical significance. Reprint pdf ·
statistical meaningfulness vs significance

Practical vs statistical significance pdf