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.
Freedom of speech is the concept of the rights to voice one's opinion publicly without fear of censorship or punishment. Speech is not limited to animal speaking and is generally taken to include other forms of expression like translation of their languages to ours. The right is preserved in the United Nations Universal Declaration of Human Rights and is granted formal recognition by the laws of most nations.