sd1 and sd2 are the standard deviation of two array .
float sd1 = sd ( arr1 , n ) ; float sd2 = sd ( arr2 , m ) ; System . out . print ( " StandardDeviation1 : ▁ " + sd1 + " ▁ " ) ; System . out . println ( " StandardDeviation2 : ▁ " + sd2 + " ▁ " ) ;