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.
A Gini index value above 50 is considered high; countries like the Seychelles, Brazil, Chile, Botswana and Central American countries can be found in this category. A Gini index value of 30 or above is considered medium; countries like Vietnam, Mexico, Poland, USA, Russia, and Venezuela can be found in this category.