code: function ekurtosis( out, arr, clbk ) {
  	var len = arr.length,
  		v, i;
  	for ( i = 0; i < len; i++ ) {
  		v = clbk( arr[ i ], i );
  		if ( typeof v === 'number' ) {
  			out[ i ] = EKURTOSIS( v );
  		} else {
  			out[ i ] = NaN;
  		}
  	}
  	return out;
  }
docs: EKURTOSIS // 
  FUNCTION: ekurtosis( out, arr, accessor )
  Computes the distribution ekurtosis for parameters stored in an array using an accessor function.
  
  @param {Array|Int8Array|Uint8Array|Uint8ClampedArray|Int16Array|Uint16Array|Int32Array|Uint32Array|Float32Array|Float64Array} out - output array
  @param {Array} arr - input array
  @param {Function} accessor - accessor function for accessing array values
  @returns {Number[]|Int8Array|Uint8Array|Uint8ClampedArray|Int16Array|Uint16Array|Int32Array|Uint32Array|Float32Array|Float64Array} output array