public static Decimal VolatilityPriceChanges(StockPosition sp, int n)
{
Decimal[] closings = new DataManipulator().GetListOfDailyClosingPrices(sp.GetTicker(), n);
return(VolatilityPriceChanges(closings));
}
public static Decimal NDayVolatility(int n, StockPosition sp)
{
Decimal[] prices = new DataManipulator().GetListOfDailyClosingPrices(sp.GetTicker(), n);
return(StandardDeviationPopulation(prices));
}