Why do I see "Trends" in Randomly Generated Data?

Discussion in 'Data Sets and Feeds' started by Rahula, Feb 21, 2008.

  1. MAESTRO

    MAESTRO

    You got it!
     
    #241     Feb 27, 2008
  2. Thank you. Surf, you listening?
     
    #242     Feb 27, 2008

  3. yes, thank you for the clarification.

    surf
     
    #243     Feb 27, 2008
  4. MAESTRO, as an aside, could you ballpark the reliability of your entry signals? Approximately what percentage of your trades are winning trades? I know that this is just one element of a comprehensive trading plan, but I'm curious.
     
    #244     Feb 27, 2008
  5. MAESTRO

    MAESTRO

    64.8% wins 35.2% losses. Average win/loss is 3.2/1 money wise. Around 2.8 trades per game a day multiplied by 200 games on average per day. There are 4.8 loosing days per year. One loosing day = 3.76 average winning days (in terms of dollars).
     
    #245     Feb 27, 2008
  6. Corey

    Corey

    Ironically I was just reading a piece the other day on %profitable vs %loss and $gain vs $loss.

    What is the better strategy ... the one that runs 55% wins vs 45% losses with average win of $500 and loss of $100 ... or the strategy of that runs 80% wins vs 20% losses with an average win of $350 and loss of $250?

    Neither ... they both have the same expectancy of $230
    :eek:

    (mind you, this is a very short sighted example that discounts variance and draw downs ... but you get the idea)...
     
    #246     Feb 27, 2008
  7. ramora

    ramora

    For the last 2 years what were the reasons for the down days? Are these out of sample events such as unexpected interest rate changes? Or, events that could have changed your models? Is there a way to reduce the number of down days in the future? Has the avg number of down days remained constant?

    Thank you for your posts.
     
    #247     Feb 27, 2008
  8. Impressive. Thank you.

    A few other questions just came to this idle mind. What is a "game?" I thought it meant trade. Is a game an expected move? Also, do you ever average down? Average up? Scale in? Scale out?
     
    #248     Feb 27, 2008
  9. Expectancy is an important number. But for someone with my easily offended delicate sensibilities, variance is key. :D
     
    #249     Feb 27, 2008
  10. MAESTRO

    MAESTRO

    Most of our problems are not related to the algorithm but rather to the execution of orders. Rejects, no fills, lag in data, computer failure, exchange lag etc. The only types of days that really cause us problems are the days when there is no movement at all! :D Also, quality of data and the connection speed are the major factors. Sometimes the distribution patterns change drastically so we need to change the order generating parameters etc. But those things happen rarely. The number one reason for having sown days is Integrity of Data and Executions!
     
    #250     Feb 27, 2008