For years, researchers have debated the misinterpretation of the null hypothesis significance test (NHST). Many researchers overemphasize the results of the NHST and underemphasize or even omit effect size measures. This paper addresses the common mistaken perceptions regarding the NHST. Several common effect size estimates are discussed. A small…

The assumption that is most important to the hypothesis testing procedure of multiple linear regression is the assumption that the residuals are normally distributed, but this assumption is not always tenable given the realities of some data sets. When normal distribution of the residuals is not met, an alternative method can be initiated. As an…

A critique of EJ 060 883. (CB)

Schools require administrators capable of mediating among competing and often conflicting demands for change both from within and from external public and private interests. (CK)

This paper provides the computational formulas necessary for testing the significance of the difference between mean values of two bivariate normal populations. (Author)