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  1. Dason

    Need some help on my calculation

    You would expect 16.666666666 doubles in total (don't round). You wouldn't expect that for each of the 6 possible ways to get a double though.
  2. Dason

    Recognizing violated number in the group

    You should use what is appropriate. With the little you've told us it's impossible to say what that should be.
  3. Dason

    Linearity assumption for logistic regression (very simple question plz help me)

    Ok so you have fairly large sample sizes at several values of the covariate. In that case I think it makes sense to use that data. Note that it probably won't be perfectly linear - we still have variation in the data of course. But what you're really looking for is significant deviations from...
  4. Dason

    Linearity assumption for logistic regression (very simple question plz help me)

    How do you plan on defining the real logodds for any given value of x?
  5. Dason

    Estimating the mean (mu) and stdev (sigma) of a non-truncated normal using data from a left-truncated normal.

    And would you be willing to post the code in those files directly in a post using code tags? It would make it a lot easier to look over.
  6. Dason

    Estimating the mean (mu) and stdev (sigma) of a non-truncated normal using data from a left-truncated normal.

    Going back to the Results.txt file - why are there two columns for lambda? What sample size did you have in your data? Could you talk about lambda more - is that the parameter that tells the left truncation point?
  7. Dason

    Estimating the mean (mu) and stdev (sigma) of a non-truncated normal using data from a left-truncated normal.

    What program are you using for the estimation? And can you maybe provide a complete example. It seems like you've shown the data you're interested in but haven't given output for that. You've shown output for simulated data but didn't show the actual data if I understand it correctly. You...
  8. Dason

    How to calculate sample size to check if 95% of values are between predefined upper and lower limit

    If you don't want to make distribution assumptions on the levels themselves you could just treat it as a sample size calculation for a single proportion.
  9. Dason

    How to calculate sample size to check if 95% of values are between predefined upper and lower limit

    Even if you rejected the KS test I don't think that actually answers the question you're trying to get at.
  10. Dason

    Hey everyone!

    Be careful what you share. There are raptors roaming these boards.
  11. Dason

    Question to "The Drunkards Walk"

    The pascal table can be used as a part of the calculation but you need more than just that to calculate the relevant probabilities.
  12. Dason

    Question to "The Drunkards Walk"

    > out <- cbind(0:5, dbinom(0:5, 5, 3/5)) > colnames(out) <- c("x", "P(X=x)") > out x P(X=x) [1,] 0 0.01024 [2,] 1 0.07680 [3,] 2 0.23040 [4,] 3 0.34560 [5,] 4 0.25920 [6,] 5 0.07776 If 60% (i.e 3/5) of the population support the mayor then when you take a random sample of 5 people and...
  13. Dason

    Maximum of the log likelyhood function

    I'm not sure what you mean by that but good luck I guess
  14. Dason

    Maximum of the log likelyhood function

    Maximum likelihood estimation is an estimation method. As with pretty much all parameter estimation methods one would never expect to perfectly estimate the parameter. There is always variation in the data.
  15. Dason

    Maximum of the log likelyhood function

    Define what you mean by "true value"
  16. Dason

    Beta distribution - mean vs mode

    Why would the mean and mode have to be equal? And even take your binomial example. Try using p = 0.33 instead of exactly 1/3. Now the mean is 9.9 and the mode is still 10. In general it's very rare for the mean and mode to be exactly equal (unless you're looking at a theoretical normal...
  17. Dason

    HEY KIND SOULS :) URGENT HELP NEEDED.

    Hi! We are glad that you posted here! This looks like a homework question though. Our homework help policy can be found here. We mainly just want to see what you have tried so far and that you have put some effort into the problem. I would also suggest checking out this thread for some...