The sales promotion data resulting from multiple marketing strategies are usually autocorrelated. Consequently, the characteristics of those data sets can be analyzed using time-series and/or intervention analysis. Traditional time-series intervention analysis focuses on the effects of single or...

The aim of this paper is to undertake the problem of adapting some multivariate statistical methods (MANOVA, cluster analysis with simultaneous test procedures T 2 based on Roy's union-intersection rule and canonical variate analysis) max and describing their possible usage in the evaluation and...

The term 'principal points' originated in a problem of determining 'typical' heads for the design of protection masks, as described by Flury. Two principal points in the mask example correspond to a small and a large size. Principal points are cluster means for theoretical distributions, and...

This paper considers estimation under the growth curve model of Potthoff and Roy (1964) with random effects. Estimation under a multivariate model is also considered. Estimation under incomplete data and estimation of random effects are also discussed. A numerical example of data on bulls is...

The W statistic of Shapiro and Wilk provides the best omnibus test of normality, but its application is limited up to n= 50. This study modifies W, such that it can be extended for all sample sizes. The critical values of W, i.e. the modification of W, is given for n up to 5000. The empirical...

Invoking the predictive approach with a fixed population set-up, and employing initially the customary ratio and product estimators as potential predictors for the non-surveyed part of the population, we have generated sequences of ratio-based and product-based estimators. The proposed...

An investigation of the prices of eight individual stocks showed that pricechange returns are significantly less complex than are time-dependent returns. Timedependent returns computed every 15, 30 and 45 minutes were found to be more complex, using a complexity measure. Complexity is quantified...

This paper presents procedures for the selection of a new sampling scheme called 'single sampling scheme' (SSS). It presents a compact table for the selection of an SSS indexed by various combinations of entry parameters. The advantages of SSSs are discussed. The basis for the construction of...

This paper presents a design procedure for ChSP-4A(c1,c2)r plans based on Kullback-Leibler information and the minimum sum of risks. A table that gives the values of the parameters n and k indexed by the acceptable quality level (AQL) and limiting quality level (LQL) is presented, from which one...

Non-parametric tests that deal with two samples include scores tests (such as the Wilcoxon rank sum test, normal scores test, logistic scores test, Cauchy scores test, etc.) and Fisher's randomization test. Because the non-parametric tests generally require a large amount of computational work,...