The purpose of this paper is to present a method for setting confidence intervals on the ratio of variances in the twofold analysis of variance model. Since the ratio of variance components is of some ...

There is considerable interest in whether exchange rates behave like martingales. Liu and He tested the martingale hypothesis for exchange rates using the variance-ratio methodology of Lo and ...

The table above is from the new study in Science Magazine “Gender Similarities Characterize Math Performance” (abstract free, $10 for full study) recently discussed here on CD, in the WSJ, and on ...

The AIRALLERG study was conducted in the framework of four ongoing birth cohort studies of similar design: PIAMA in the Netherlands (Brunekreef et al., 2002), BAMSE in Sweden (Wickman et al., 2002) ...

Discover how efficiency variance reveals the gap between expected and actual inputs in production and its impact on labor, materials, and costs.