In statistics, Spearman's rank correlation coefficient or Spearman's rho, named after Charles Spearman and often denoted by the Greek letter Ï {\displaystyle \rho } (rho) or as r s {\displaystyle r_{s}} , is a nonparametric measure of rank correlation (statistical dependence between the ranking of two variables).
Freedom of Speech and Freedom to Criticize should have limit. Sometimes people and in particular, the big fishes, (politicians) go beyond the limit and make everyone complain for they even go to the extent of even abusing their seniors e.g.; presidents.
The definition is not easy, and the courts have identified three types of free speech, each protected at a different level: 1  Pure speech is the verbal expression of thoughts and opinions before a voluntary audience. 2  The courts have generally provided strong protection of pure speech from government regulation.