This paper deals with the problem of estimating population variance <InlineEquation ID="IEq1"> <EquationSource Format="TEX">$${{S}_{\rm y}^2}$$</EquationSource> </InlineEquation> of the study variable y. We have suggested a family of estimators of population variance <InlineEquation ID="IEq2"> <EquationSource Format="TEX">$${{S}_{\rm y}^2}$$</EquationSource> </InlineEquation> using the transformations on both the study variable and the auxiliary variable when...</equationsource></inlineequation></equationsource></inlineequation>

This paper advocates the problem of estimating the population mean of the study variable y using the information on two auxiliary variables x and z. We have suggested the family of chain ratio exponential type estimators in two-phase (or double) sampling. The bias and mean squared error (MSE)...

Self-efficacy is a psychological construct based on the evaluations of one's ability to accomplish certain behaviours or achieve certain outcomes (Bandura, 1977). Although self-efficacy has been linked to health, task accomplishment, greater socio-economic status and income (Seeman and Seeman, 1983;...

This paper uses data from the Panel Study of Income Dynamics (PSID) to examine the likelihood of receiving health insurance coverage and retirement benefits among employees working in the hospitality sector. The results show that, although hospitality sector employees are less likely to receive...