Public static void computesd (int [ ] numbers) {     int length = numbers. length;     double var, sd, mean, sum, varsum;     sum = 0;     for (int i = 0; i < length; i++)     {           sum += numbers [ i ];     }      mean = sum / (double) length;     varsum = 0;     for (int i = 0; i < length; i++)     {           varsum = varsum  + ((numbers [ i ] - mean) * (numbers [ i ] - mean));     }     var = varsum / ( length - 1.0 );     sd  = math. sqrt ( var );     system. out. println ("standard deviation: " + sd); }