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Threads 3181 to 3192 of 3192

Forum: Statistical Research

Statistical theory and methodology. Mathematical statistics. Parametric inference. Nonparametric inference.

  1. Sticky Thread Sticky: Proof of the day

    In this thread we post one (or more if you can't wait) proof a day. I'll start by proving the that V=\sigma^2(X'X)^{-1} in the linear...

    Started by Englund‎, 01-18-2014 04:56 AM
    • Replies: 14
    • Views: 18,625
    10-11-2014, 12:02 PM Go to last post
  1. about random walk Metropolis algorithm

    Our model is: Y is distributed from a Negative binomial(r,p) where log(p/1-p)=xb. The prior of b is a multivariate normal(mu0,...

    Started by zzeta35‎, 01-06-2013 04:45 PM
    r code, rwm
    • Replies: 3
    • Views: 2,172
    01-06-2013, 07:50 PM Go to last post
  2. bridge estimation in linear regression

    So the bridge estimates, \beta (which is a vector of \beta_1,...,\beta_p), minimize \sum_{i=1}^n (y_i - x_i^T\beta)^2 +...

    Started by zzzc‎, 11-25-2010 11:53 PM
    • Replies: 0
    • Views: 2,303
    11-25-2010, 11:53 PM Go to last post
  3. number of distinct samples in sampling with replacement

    If I have a set (X1, X2,X3) and I want to re-sample them with replacement, the possible combinations of the samples are (the order doesn't matter):...

    Started by zzzc‎, 02-01-2011 06:58 PM
    • Replies: 0
    • Views: 3,587
    02-01-2011, 06:58 PM Go to last post
  4. interval censored data using bootstrap method

    I have time Xi that is interval censored and the data consist of time intervals Ii = such that Xi is within Ii , Ri>Li, i=1,...,96 My interest is...

    Started by zzzc‎, 03-16-2011 08:35 PM
    • Replies: 2
    • Views: 4,826
    03-29-2011, 09:09 PM Go to last post
  5. nonparametric estimate the distribution with a histogram only

    Suppose X1,.., Xn ~iid F with mean mu_F The data is summarized in a histogram and that is all I have. I don't have the individual Xi (i = 1,...,n)....

    Started by zzzc‎, 03-23-2011 11:32 PM
    • Replies: 3
    • Views: 3,054
    03-24-2011, 11:47 PM Go to last post
  6. bias of the coefficient of variation

    Is the coefficient of variation biased? How would you compute the bias of CV? Can I write E(sigma_hat/|mu_hat|) = E(sigma_hat)E(1/|mu_hat|)+ ...

    Started by zzzc‎, 03-30-2011 10:50 AM
    • Replies: 4
    • Views: 5,648
    03-30-2011, 02:38 PM Go to last post
  7. EM Algorithm for Gaussian Mixture model fitting data with missing values

    I have an EM function that will take regular data with no missing values, and compute means, standard deviations, and probabilities of components of...

    Started by zzzc‎, 03-31-2011 09:15 PM
    • Replies: 1
    • Views: 4,350
    04-12-2011, 11:26 AM Go to last post
  8. Gpower

    I'm wanting to run a study where I record motor evoked potentials evoked from a group of participants they view images of people performing reach and...

    Started by _Craig_‎, 09-23-2009 01:15 PM
    • Replies: 2
    • Views: 5,082
    01-11-2011, 08:28 AM Go to last post
  9. Variance estimation

    A simple question we have a random sample n=2 with X, Y drawn from a normal distribution N~(0, \sigma^2). Is V=\frac{X^2}{2}+\frac{Y^2}{2} a...

    Started by _joey‎, 10-31-2010 05:09 AM
    2 Pages
    1 2
    • Replies: 21
    • Views: 6,422
    11-01-2010, 06:42 AM Go to last post
  10. Linear estimator of mean

    Problem is solved! :)

    Started by _joey‎, 11-03-2010 05:19 AM
    • Replies: 0
    • Views: 1,840
    11-03-2010, 05:19 AM Go to last post
  11. Project ideas

    Hello guys and girls, In our coursework programme we will be asked to complete 2 industry projects each 25-30 pages long. There is a great number...

    Started by _joey‎, 11-28-2010 06:07 AM
    • Replies: 0
    • Views: 4,600
    11-28-2010, 06:07 AM Go to last post
  12. Algebra, two-sample t-statistic, variance

    Could someone help to start with the question. Question: http://s12.postimage.org/kvtyiacuj/question.png Thanks!

    Started by _joey‎, 08-06-2012 02:24 AM
    2 Pages
    1 2
    • Replies: 20
    • Views: 5,717
    08-13-2012, 12:31 AM Go to last post

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