Forex Software — More info on Sigma?

Re: More info on Sigma?

null@example.com (alanversowa) — Fri, 22 Apr 2011 11:09:42 +0000

what a great an before it i did not give any attention to it but now i realized that i had a little knowledge about it

Re: More info on Sigma?

null@example.com (Norman) — Tue, 22 Mar 2011 04:31:56 +0000

Thanks for telling us about sigma in detail. I also have difficulty in understanding this term. It is used by many professionals in explaining the acceptable limits of the indicators in Forex trading.

jobs
employment
careers
career
work
recruitment

Re: More info on Sigma?

null@example.com (Popov) — Mon, 13 Sep 2010 08:34:30 +0000

Sigma is the acceptable statistical error, used in FSB / FST for comparing number in double format.

For example let's take two numbers:
double a;
double b;

FSB says that a is greater than b when a > b + sigma.

Sigma takes its value from the Sigma() function in the Indicator.cs file;

        protected double Sigma()
        {
            int iSigmaMode = isSeparatedChart ?
                Configs.SIGMA_MODE_SEPARATED_CHART : // Indicators plotted on its own chart (MACD, RSI, ADX, Momentum, ...)
                Configs.SIGMA_MODE_MAIN_CHART;       // Indicators plotted on the main chart (MA, Bollinger Bands, Alligator, ...)

            double dSigma;

            switch (iSigmaMode)
            {
                case 0:
                    dSigma = 0;
                    break;
                case 1:
                    dSigma = Data.InstrProperties.Point * 0.5;
                    break;
                case 2:
                    dSigma = Data.InstrProperties.Point * 0.05;
                    break;
                case 3:
                    dSigma = Data.InstrProperties.Point * 0.005;
                    break;
                case 4:
                    dSigma = 0.00005;
                    break;
                case 5:
                    dSigma = 0.000005;
                    break;
                case 6:
                    dSigma = 0.0000005;
                    break;
                case 7:
                    dSigma = 0.00000005;
                    break;
                case 8:
                    dSigma = 0.000000005;
                    break;
                default:
                    dSigma = 0;
                    break;
            }

            return dSigma;
        }

The SigmaMode parameter is set in the config.xml file and it's constant value.

  1
  5

Therefore, the Sigma for the indicators plotted on the main price chart is 0.5 *Point. The idea is that the indicators on the price charts are compared with the market price, so the comparing error must not be greater than 1 pip.

For the indicators plotted on a separated chart has sigma value of 0.000005.

More info on Sigma?

null@example.com (krog) — Sun, 12 Sep 2010 23:51:59 +0000

Is there an article on Sigma()? I've seen it in Indicator.cs for calculating some of the logic. I am not 100% sure how to determine what sigma value my custom indicator is using when the logic passes through this code. I try to port my FSB indicators to my trading platform, sometimes the signals don't match for very small values like .2 pips. It could be rounding, but I'd like to fully understand the sigma value to include it to be sure. thanks !!