private function setMeanAndMedian($arr)
{
$item = $arr["typeObj"];
if ($item->getId() == EnumItemPeer::RATING_BOOLEAN) {
$arr["mean"] = "N/A";
$arr["median"] = "N/A";
} elseif ($item->getParentId() == EnumItemPeer::RATING_SCALE) {
$arr["mean"] = helperFunctions::findMean(1, $item->getDescr(), $arr);
$arr["median"] = helperFunctions::findMedian(1, $item->getDescr(), $arr);
} else {
// FIXME type not supported
throw new Exception("type not supported");
}
return $arr;
}
