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Recently, Sakai proposed two methods for determining the topic set size n for a new test collection based on variance estimates from past data: the first method determines the minimum n to ensure high statistical power [22], while the second method determines the minimum n to ensure tight confidence invervals [23]. These methods are based on statistical techniques described by Nagata [15]. Whil...

An Excel sheet with both the data and the results can be downloaded by clicking here. The data correspond to an experiment where 4 new toothpaste formulas were each tested on 6 different patients in order to measure their effect on the whiteness of teeth. All patients had previously used the same toothpaste. Using the ANOVA function of XLSTAT we want to find out if the results differ according ...

143 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/ by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Statistical notes for clinical researchers: Two-way analysis of variance (ANOVA)-explor...

OBJECTIVES To evaluate the effect of smear layer thickness (SL) on early and 6-month bond strength (BS) of self-etching adhesives to dentin and to measure the ultimate microtensile strength (UTS) of the adhesives. METHODS Clearfil SE Bond; Optibond Solo Plus Self-Etch Primer; Tyrian Self Priming Etchant (TY) and as controls, Single Bond (SB) and Scotchbond Multi-Purpose Plus (SBMP) were appli...

But these experiments [2] will not give us any information about the dependence or independence of the two factors, namely study habit and home environment. In such cases, we resort to Factorial ANOVA which not only helps us to study the effect of two or more factors but also gives information about their dependence or independence in the same experiment. There are many types of factorial desig...

Erratum to Matsukura, M., & Hollingworth, A. (2011). Does visual short-term memory have a high-capacity stage? Psychonomic Bulletin & Review, 18, 1098–1104. p. 1103. Results and discussion: F(1, 9) should be F(9, 9). The F and p values are from the within-subjects one-way ANOVA with F(9, 9). p. 1100. BThe bar stimuli (1.93° × 0.21°) were presented in one of four orientations (vertical, horizont...