Sleep related groaning, also called catathrenia, causes you to groan vocally while you sleep. Sleep related groaning is a long-lasting disorder that often occurs nightly. The groaning sound is usually quite loud. Your breathing becomes unusually slow during a groaning episode. You take in a slow, deep breath.
The Gini coefficient (or Gini ratio) is a summary statistic of the Lorenz curve and a measure of inequality in a population.he Gini coefficient (or Gini ratio) is a summary statistic of the Lorenz curve and a measure of inequality in a population.
Costa Rica's GINI coefficient for 1996, as reported by the World Bank, was 0.4607. This compared favorably with the distribution of income for its neighboring countries: El Salvador (0.052), Guatemala (0.0596), Honduras (0.537), Nicaragua (0.503), and Panama (0.485). The United States had a GINI coefficient of 0.408.