Implementation of Statistical Significance and Practical Significance Using Research Hypothesis and Statistical Hypothesis in the Six Sigma Projects

Statistical and Practical Significance of Articles at Sports Biomechanics Conferences

Background. The importance of using statistical approaches has increased and became necessary for researchers and specialists in sports biomechanics because they need more objective and accurate methods to increase knowledge. Objectives. Evaluate the reality of using practical significance in the articles published in scientific conferences in the biomechanical sport. Methods. One hundred twe...

Statistical significance and statistical power in hypothesis testing.

Experimental design requires estimation of the sample size required to produce a meaningful conclusion. Often, experimental results are performed with sample sizes which are inappropriate to adequately support the conclusions made. In this paper, two factors which are involved in sample size estimation are detailed--namely type I (alpha) and type II (beta) error. Type I error can be considered ...

Statistical versus Practical Significance

Null Hypothesis Significance Testing: Philosophical and Practical Considerations of a Statistical Controversy

This article first outlines the underlying logic of null hypothesis testing and the philosophical and practical problems associated with using it to evaluate special education research. The article then presents 3 alternative metrics—a binomial effect size display, a relative risk ratio, and an odds ratio—that can better aid researchers and practitioners in identifying important treatment effec...

What role should null-hypothesis significance tests have in statistical education and hypothesis falsification?

3 Arrigo, K.R. et al. (1998) Primary production in Southern Ocean waters. J. Geophys. Res. 103, 15587–15600 4 Karnovsky, N. et al. (2007) The impact and importance of production in polynyas to top-trophic predators: three case histories. In Polynyas (Smith, W.O., Jr,, and Barber, D.G., eds), pp. 391–410, Elsevier 5 Smith, W.O., Jr and Nelson, D.M. (1985) Phytoplankton bloom produced by a recedi...