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.
The Gini coefficient (also known as the Gini index or Gini ratio) is a measure of differences in income.It was developed by the Italian statistician Corrado Gini in 1912.he Gini coefficient is usually a number between 0 and 1 (or 0 to 100). 0 means a country the income is equally distributed. On the other hand, 1 means that one person owns everything but the rest own nothing.