Use of multiauxiliary variables to cope with non response in estimation of current population mean in two-occasion successive sampling

ABSTRACT

The present work utilizes the information on multiauxiliary variables to neutralize the negative effect of non response in estimation of current population mean in two-occasion successive sampling. Generalized exponential type estimators have been proposed for the situation when non response occurs at both occasion or at first occasion or at current (second) occasion in two-occasion successive sampling. Properties of the proposed estimators have studied and empirical studies are carried out to justify the preposition of estimators. Suitable recommendations have been made.     

An Analysis of Selected Pension and Health Care Initiatives for Informal Sector Workers in India

India's demographic trends portend moderately rapid ageing of the population. This, combined with the limited coverage of pension and health care programmes in terms of population, types of risks covered, and benefit levels has led to greater urgency in extending the coverage and reform directions of the current pension and health care programmes. This article analyses three pension and health care initiatives in India directed at the workers and their families engaged in the informal sector. The first initiative, India's National Social Assistance Programme (NSAP), undertaken in 1995 provides budget‐financed transfers targeted at older persons. It is funded by the Union government but implemented by the state governments. The second initiative, called Swavalamban, was started in 2010, but has been subsumed under Atal Pension Yojana (APY), in the 2015–16 budget. Both are voluntary co‐contributory initiatives aimed at providing access to retirement income to low‐income individuals (government co‐contributing with the individual). Unlike Swavalamban, the APY initiative has provisions for minimum guaranteed pension benefits, with contributions required by the members adjusted accordingly. Effectiveness in increasing enrollment and in sustaining contributions over a longer period will impact on the extent of retirement income security obtained by the members. The third initiative, Rashtriya Swasthya Bima Yojana (RSBY), is insurance‐based and aims to provide hospital care to low‐income households. The article argues that for improving outcomes of these initiatives, more effective implementation, greater fiscal resources, and an integrated and systemic approach which is aided by technology‐enabled platforms such as Aadhaar, will be needed.     

Simultaneous inferences for ordered exponential location parameters under unbalanced data and heteroscedasticity of scale parameters

A test procedure for testing homogeneity of location parameters against simple ordered alternative is proposed for k(k ≥ 2) members of two parameter exponential distribution under unbalanced data and heteroscedasticity of the scale parameters. The relevant one-sided and two-sided simultaneous confidence intervals (SCIs) for all k(k ? 1)/2 ordered pairwise differences of location parameters are also proposed. Simulation-based study revealed that the proposed procedure is better than the recently proposed procedure in terms of power, coverage probability, and average volume of SCIs. The implementation of proposed procedure is demonstrated through real life data.     

A new class of distribution having decreasing,increasing, and bathtub-shaped failure rate

In this article, we propose a new class of distribution which is based on the concept of exponentiated generalization with some modification so as to provide a better result in terms of flexibility. Our proposed distribution accommodates various shapes of hazard rate including the bathtub. Exponential distribution has been taken as the baseline distribution. Various statistical properties of the proposed distribution have been studied. We have used the method of maximum likelihood for estimation of the parameters of the proposed model. Last, we have analyzed four real datasets to illustrate the flexibility of the model in comparison to eight existing well-known distributions.     

Some effective combinations of available information under non response in two-occasion successive sampling

The present work suggests some effective linear combinations of exponential estimators to estimate the current population mean in two occasion successive sampling in presence of non response. Using the subsampling technique of non respondents, estimation procedures have been developed by utilizing information on an auxiliary variable, which is readily available on both occasions. Properties of the proposed estimation procedures have been examined and related optimum replacement strategies are suggested. Empirical studies are carried out to justify the preposition of estimators. Suitable recommendations have been made.