Rough testing of average stat roll for DnD

stat_test.js

function Roll(sides)
{
	return 1 + Math.round(Math.random()*(sides - 1));
}

function RollForStat()
{
	var totals = [Roll(6), Roll(6), Roll(6), Roll(6)];
	var lowestIndex = 0;
	var lowestNumber = totals[0];
	for (var i = 1; i < totals.length; i++)
	{
		var currentNumber = totals[i];
		if (currentNumber < lowestNumber)
			lowestIndex = i;
	}
	
	var numberCount = totals.length - 1;
	var totalNumber = 0;
	
	for (var i = 0; i < totals.length; i++)
	{
		if (lowestIndex == i)
			continue;
			
		totalNumber += totals[i];
	}
	
	return totalNumber;
}

function TestAverageStat(howManyTimes)
{
	var totalNumber = 0;
	for (var i = 0; i < howManyTimes; i++)
	{
		var stat = RollForStat();
		totalNumber += stat;
	}
	
	return totalNumber / howManyTimes;
}