static float meanAbsDevtion ( float arr [ ] , int n ) {
  float absSum = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) absSum = absSum + Math . abs ( arr [ i ] - Mean ( arr , n ) ) ;
  return absSum / n ;
}

static float meanAbsDevtion ( float arr [ ] , int n ) { float absSum = 0 ; for ( int i = 0 ; i < n ; i ++ ) absSum = absSum + Math . abs ( arr [ i ] - Mean ( arr , n ) ) ; return absSum / n ; }
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