Geographical coordinates such as Global Positioning System (GPS) latitude and longitude estimates form the foundation of many spatial statistical methods. gpsbound allows users to (1) import geographical information from the attribute table of a polygon shapefile based on the identified location...

his paper is concerned with conducting univariate multiple imputation for employee income data that is comprised of continuously distributed observations, observations that are bounded by consecutive income brackets, and observations that are missing. A variable with this mixture of data types...

In this paper the Total Survey Error (TSE) paradigm is combined with detailed data quality indicators to develop a framework for investigating micro data quality. The TSE framework is widely used in the survey methodology literature to identify different components of error that arise in the...

The design of the income question in household surveys usually includes response options for actual income, bracketed values, "Don't Know" and "Refuse" responses. This paper conducts an analysis of these response types using sequential response models specified analogously to those in the survey...

This paper discusses the changing profile of rural livelihoods in South Africa using the National Income Dynamics Study Waves 1 – 3 data (Southern Africa Labour & Development Research Unit (SALDRU), 2013a, 2013b, 2013c). The rural sector is undergoing a form of compositional change, with the...

This study evaluates food expenditure patterns in South Africa using the Engel framework which states that proportions spent on food fall with income. Non-parametric methods are used to estimate Engel curves, and regression analysis to evaluate the effects of several variables on shares of total...