function lowerQuartil(arr) {
		var quarter = Math.floor(arr.length/4);

		if(arr.length % 4)
			return arr[quarter];
		else
			return (arr[quarter-1] + arr[quarter])/2;
	}
// Returns the value for the lower Quartil
Returns the value for the lower Quartil
Returns the value for the lower Quartil
function lowerQuartil(arr) {
		var quarter = Math.floor(arr.length/4);
		if(arr.length % 4)
			return arr[quarter];
		else
			return (arr[quarter-1] + arr[quarter])/2;
	}
function lowerQuartil ( arr ) { var quarter = Math . floor ( arr . length / 4 ) ; if ( arr . length % 4 ) return arr [ quarter ] ; else return ( arr [ quarter - 1 ] + arr [ quarter ] ) / 2 ; }
Returns the value for the lower Quartil
Returns the value for the lower Quartil