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.
It estimated Chinaâs Gini coefficient to be 0.49 in 2012, less than the 0.51 in 2010. The Gini coefficient is an approximate measure of the scale of the wealth gap in a society, with a coefficient of zero representing perfect equality. The Chinese government avoided releasing an official number for several years.