This paper re-examines inference for cluster samples. Sensitivity analysis is proposed as a new method to perform inference when the number of groups is small. Based on estimations using disaggregated data, the sensitivity of the standard errors with respect to the variance of the cluster...

Purpose – Despite the relevance of financial information relating to logistics service providers (LSPs), recent research has paid little attention to the financial analysis of LSPs. The aim of this paper is to examine the balance sheet structure of LSPs in order to find out if there are...

This paper re-examines inference for cluster samples. Sensitivity analysis is proposed as a new method to perform inference when the number of groups is small. Based on estimations using disaggregated data, the sensitivity of the standard errors with respect to the variance of the cluster...

A weighted multivariate signed-rank test is introduced for an analysis of multivariate clustered data. Observations in different clusters may then get different weights. The test provides a robust and efficient alternative to normal theory based methods. Asymptotic theory is developed to find...

Unlike most businesses, firms in a sports league need viable competitors. While a certain amount of domination is optimal, from an individual owners perspective, too much will result in league dissolution, and thus a lower utility for every owner. Hence, there is a limited positive production...