Run
1st element ====================== mean = (2+6)/2 = 4 standard deviation = sqrt( ( (2-4)^2 + (6-4)^2 )/2 ) = sqrt( 4 ) = 2.0 2nd element ====================== mean = (3+5)/2 = 4 standard deviation = sqrt( ( (3-4)^2 + (5-4)^2 )/2 ) = sqrt( 1 ) = 1.0
Output