Chart for .NET / User's Guide / Data Manipulation / Functions / Financial Functions / Moving Averages / Modified Moving Average

Modified Moving Average
 Syntax
MMA(values; period)
 Arguments
The 'values' argument must be an array.
The 'period' argument must be a constant greater or equal to 1.
 Result
The result is an array.
 Description

A Moving Average is an indicator that shows the average value of a security's price over a period of time. The Modified Moving Average is actually the same as the Exponential Moving Average, but with one difference - the exponential percentage is calculated with the following formula:


    Exp_Percent = 1 / (Time_Periods + 1)


For comparison the exponential percent for the EMA is:


    Exp_Percent = 2 / (Time_Periods + 1)


The formula for calculating the MMA is the same as the formula of the EMA:


    MMA[n] = values[n] * Exp_Percent + MMA[n-1] * (1 - Exp_Percent)


The two functions are equivalent, but for different values of the period parameter. For example a 14-day MMA is the same as 27-day EMA. The MMA function is provided for convenience.

 Related Examples
Windows Forms: All Examples\Data Manipulation\Functions\Financial\Moving Averages