33     protected $xValues = [];  variable in PhpOffice\\PhpSpreadsheet\\Shared\\Trend\\BestFit
125         return $this->xValues;
347         foreach ($this->xValues as $xKey => $xValue) {
356             $SScov += ($this->xValues[$xKey] - $meanX) * ($this->yValues[$xKey] - $meanY);
358                 $SSsex += ($this->xValues[$xKey] - $meanX) * ($this->xValues[$xKey] - $meanX);
360                 $SSsex += $this->xValues[$xKey] * $this->xValues[$xKey];
400      * @param float[] $xValues
403     protected function leastSquareFit(array $yValues, array $xValues, $const): void  argument
406         $x_sum = array_sum($xValues);
412             $xy_sum += $xValues[$i] * $yValues[$i];
413             $xx_sum += $xValues[$i] * $xValues[$i];
417                 $mBase += ($xValues[$i] - $meanX) * ($yValues[$i] - $meanY);
418                 $mDivisor += ($xValues[$i] - $meanX) * ($xValues[$i] - $meanX);
420                 $mBase += $xValues[$i] * $yValues[$i];
421                 $mDivisor += $xValues[$i] * $xValues[$i];
442      * @param float[] $xValues The set of X-values for this regression
445     public function __construct($yValues, $xValues = [], $const = true)  argument
449         $nX = count($xValues);
453             $xValues = range(1, $nY);
460         $this->xValues = $xValues;