Traditional literature on sampling techniques focuses mainly on statistical samples and covers non-random (non-statistical) samples only marginally. Nevertheless, there has been a recent revival of interest in non-statistical samples, given their widespread use in certain fields like government...

Income inequality in Colombia has declined since the early 2000s but remains very high by international standards. While most of the inequality originates from the labour market, wealth – and thus capital income – is also highly concentrated and the tax and transfer system has little...

Income inequality in Colombia has declined since the early 2000s but remains very high by international standards. Income dispersion largely originates from the labour market, which is characterised by a still high unemployment rate, a pervasive informal sector and a wide wage dispersion...