PERFORMANCE OF STUDENTIZED RANGE STATISTIC FOR TWO OUTLIERS IN A LINEAR MODEL

Abstract. In JOSHI and LALITHA (1986) a statistic K is proposed for detecting two outliers present in the opposite directions in a linear model. This statistic reduces to the Studentized range statistic for the case of a simple random sample from a normal population. In this paper, the performance of this statistic is studied. For this an approximate non–null density of the random variables involved in defining the statistic is derived. An exact density is also obtained by using the methods of LALITHA and JOSHI (1986), where the results are proved for Murphy's statistic. A measure of performance is then defined and an example is also given for highlighting the usage of the above said statistic.     

The financial contribution of customer-oriented marketing capability

This article assesses the financial contribution of marketing capability. In contrast with previous research, which conceptualizes marketing capability as the deployment of marketing resources to achieve sales, this study conceives marketing capability as the deployment of marketing resources to achieve the ultimate objectives of customer satisfaction and brand equity (i.e., customer-oriented marketing capability [COMC]). Thus, this research disentangles the dynamic relationships among marketing resources, sales, customer satisfaction, and brand equity through the use of network Data Envelopment Analysis to capture COMC. According to what the value relevance perspective proposes, COMC positively influences the growth of Tobin’s q and improves the growth of analysts’ recommendations. These findings remain robust and consistent with the use of additional measures and methods common to the marketing and financial literatures. Our study provides tools and a framework for analysis for managers to maximize their ability to use marketing strategy to drive performance.     

The European unemployment problem: its cause and cure

The stubbornly high unemployment experienced by European countries since the mid-1970s have led to a major reconsideration of the natural rate paradigm. Traditional theories which describe movements of unemployment as fluctuations around a moving natural rate have been challenged by hysteresis theories. The question arises how one can discriminate between these competing theories. To this end, we estimate a time-varying parameter model of the unemployment rate for the US, UK, Germany, and France. The parameters of the model were estimated jointly by maximum likelihood estimation using the Kalman filter algorithm. When the moving natural rate model is tested against the alternative of a unit root process, the unit root hypothesis is resoundingly rejected. Among the determinants of the natural rate institutions that alter labour market incentives for workers appear to have been more important than institutions that affect labour demand.     

Can herding improve investment decisions?

Existing models show that herding in decisions can cause significant information loss, inferior information aggregation, and impaired decision making. However, we show that in a multistage decision setting with endogenous information production, herding on the initial decision can actually result in superior aggregate information and improved decisions. This is because the possibility of herding by a follower incentivizes the leader to increase its ex ante information production to an extent that it can dominate the information loss from herding. Examples include decisions to enter new markets, fund R&D, and provide early‐stage venture capital.     

Zone-quadratic preference,asymmetry and international reserve accretion in India: An empirical investigation

Empirical estimates of the Reserve Bank of India's (RBI) intervention reaction function suggest that the central bank actively intervenes in the foreign exchange market to contain volatility but this intervention is neither continuous nor linear. It is better described by a nonlinear policy reaction function with a target range as opposed to a point target. It responds much more vigorously to appreciating or depreciating pressure outside the target range but the response is much more muted within the range. Moreover, the tolerance band is asymmetric i.e., the RBI responds much more strongly to appreciating pressure than depreciating pressure. Such a policy response in an era of continuous net capital inflows accounts for the large build-up in foreign exchange reserves witnessed in India in the recent past.     

Understanding the Opportunistic Approach to Disinflation

One approach to achieving price stability is to undertake a deliberate path to an ultimate goal of low inflation—deliberate disinflation. In contrast an opportunistic strategy for disinflation has gained credence in recent years though on the face of it suboptimal. Our procedure is to seek a set of sufficient conditions under which the opportunistic strategy is optimal for a central bank maximising the preferences of the representative agent. We find that such a sufficient set of conditions consists of adaptiveness in expectations and an asymmetry in the Phillips curve of a specific sort.

     

The Bright Side of Internal Capital Markets

We examine capital expenditure decisions of discount firms in response to Wal-Mart's entry into their markets. Before Wal-Mart's entry, focused incumbents and discount divisions of diversified incumbents are similar in size, geographic dispersion, and firm debt levels. However, discount divisions of diversified firms are significantly more productive. After Wal-Mart's entry, diversified firms are quicker to either "exit" the discount business or "stay and fight." Also, their capital expenditures are more sensitive to the productivity of their discount business. Internal capital markets function well, as transfers are away from the worsening discount divisions. It appears diversified firms make better investment decisions.     

A Cross-Country Investigation of Recall of and Attitude toward Comparative Advertising

Abstract

The author reports the results of an exploratory study of cross-country differences in recall of and attitude toward comparative advertising. As American companies are increasingly advertising their products in other countries, the issue of cross-country differences in comparative advertising effectiveness is very important. The study found that although recall of comparative ads was high, consumer attitudes toward comparative ads was not very positive, especially in countries where comparative ads are not widely used or are used rarely. Therefore, comparative ads should be targeted at other countries with caution.     

Can the facts of UK inflation persistence be explained by nominal rigidity?

It has been widely argued that inflation persistence since WWII has been widespread and durable and that it can only be accounted for by models with a high degree of nominal rigidity. We examine UK post-war data where after confirming previous studies' findings of varying persistence due to changing monetary regimes, we find that models with little nominal rigidity are best equipped to explain it.