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  1. Z

    Help for College Assignment

    I'd like to help out if I can. For your question, my estimate is $1.67-$2/day for lunch, male, and I (would) eat on campus. It's not campus food, I make my own lunch, but I (would) sit in the cafeteria or somewhere on campus. Note: I graduated a long time ago and don't attend now, but I...
  2. Z

    Do you see patterns in Random Walks?

    Is there any research or theories on the adoption rate of jumping on to the pattern? Or, the rate at which the flock wholly turns left, from the earliest left turners to the last few? Surely, they don't all do it exactly at the same time, there is probably some distribution curve to describe it...
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    What is risk/reward knowing more than 90% of traders lose?

    I always like emg's posts, I don't take it as emg is a naysayer. Instead, it reminds me to avoid the slow, meandering, easy times to enter, which is 95% of the time and never win. Instead, look for the sharp painful points that are only 5% of the time, they are difficult to catch.
  4. Z

    Do you see patterns in Random Walks?

    Thank you for the reference, I'll try to study it (but I think it's going to take quite some time ...)
  5. Z

    Do you see patterns in Random Walks?

    Thanks for the picture. I had done something in Excel, the picture helps me confirm I was on the right track. Slight digression -- does anyone know if there is a field of study about paths? (only requesting a name, I'll research on my own) Often, I'm not concerned about the change amount...
  6. Z

    Do you see patterns in Random Walks?

    Thank you, this I can understand, so for an alternative, I'll look into coupling in nonlinear systems. Brings to mind an article in Science Review (I think that's the name) about the Eureqa software app. (It's an awesome app that takes data and tries to fit equations to it, it's a lot of fun.)...
  7. Z

    Do you see patterns in Random Walks?

    I'm sorry, I meant my post as a question. Paraphrasing the discussion points up to now, I'm trying to guess what comes next, which led me to this question. Could you expand on your response or viewpoint a bit more, or the inaccuracies? I'd be happy to consider it, but it would be great if you...
  8. Z

    Do you see patterns in Random Walks?

    Yes, and now I have trouble forecasting where the next step in the discussion will be. Not to disagree or object (that's not until I've heard the full positions and understand them), but it seems to me there is a contradiction or inconsistency: Everything is random. The random parts interact...
  9. Z

    Do you see patterns in Random Walks?

    This is what I thought too. It's only when they are put on cans they can affect each other and then they synchronize. Off the cans, no interaction, they go back to no synchronization.
  10. Z

    Do you see patterns in Random Walks?

    I'll try to map the concepts onto an example: I read an article that a fringe idea (like a new fad or conspiracy theory) has low adoption in the population, until it passes a threshold of 10% of the population. After it passes 10%, acceptance increases quickly. Would the threshold of 10% be an...
  11. Z

    Do you see patterns in Random Walks?

    Tried to delete, but over the time limit. I think this is a moot point -- if the dimension is knowable in entirety, then there is no "outcome".
  12. Z

    Do you see patterns in Random Walks?

    Perhaps it's a matter of scale then? Also, if this not an unrelated or unresolvable tangent, is dimensionalism important? It seems like, it's random because we don't know what will happen in the future, but this could be due to human limitations of perceiving the time dimension as undirectional...
  13. Z

    Statistics class today : Am I correct or is my teacher?

    Oh man, I'm so sorry to stir up the heated debate ... maybe there's another way to approach this ... the teacher said you would find out in Ch 5, what's the title or some of the subtitles from that section? Maybe one of them will be the name, and I can look it up on wikipedia. My guess with...
  14. Z

    Statistics class today : Am I correct or is my teacher?

    Did you find the answer to this? Don't mean to rush it if not yet, just bumping because I was interested to find out too.
  15. Z

    Do you see patterns in Random Walks?

    Actually, I think it's just basic probability of a bunch of independent events multiplied together (eg (p)^(n-loss) * (1-p)^(n-wins) ), but turned around with logs to get streak expectations. In that case, I don't think it's a secret formula.
  16. Z

    Do you see patterns in Random Walks?

    I've found the same thing, things work for a while and don't work some time later. Is true-false, or works-doesn't work, are they permanent or not-permanent states? My experience (limited and crummy as it is) supports the idea that all life is change -- and the change occurs over time, rarely...
  17. Z

    Do you see patterns in Random Walks?

    Thank you for the more interesting read, this was my favorite excerpt: "Thus, the real and important issue, given positive performance, is not whether there was luck or skill involved in achieving it, but what was the probability of ruin as a function of time." That's what I'm more interested...
  18. Z

    Do you see patterns in Random Walks?

    Sometimes my backtested systems or my trading performance shows some positive or negative results, but the question is: is that a sign of some skill or validity of the system, or is it a random walk and I've just found a positive streak that has a life span of some finite time? Here was an...
  19. Z

    The hurricane heading towards nyc/nj

    I saw on Discovery, they did a simulation program on if London got flooded. One thing they mentioned -- there could be holes in the street or open manholes that fall into underground tunnels like the subway. So even if the water is only knee-deep, people walking through the water could fall into...
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