calculate Karl Pearson's coefficient of correlation by using step deviation method .( provide working note also )  ( experts please give the answers with same numbers which is provided in question don’t change the numbers and don’t provide any link .)

calculate Karl Pearson's coefficient of correlation by using step deviation method .( provide working note also ) (experts please give the answers with same numbers which is provided in question don’t change the numbers and don’t provide any link.) 70 60 100