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    Dason ‎(Devorador de queso)
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Threads 3181 to 3193 of 3193

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: 18,750
    10-11-2014, 12:02 PM Go to last post
  1. Poll Poll: Confidence Intervals: Closed or Open Intervals

    I want to pose a question, mainly theoretical in nature, but applied responses are more than welcome. First, I'll define some terms. An interval...

    Started by ondansetron‎, 10-05-2017 06:45 PM
    • Replies: 4
    • Views: 208
    10-10-2017, 06:26 PM Go to last post
  2. ANOVA vs Kruskal-Wallis for combined normal and non-normal data

    I have a number of distributions that I need to determine significant differences. However, some distributions are normal and some are not. In order...

    Started by joefoy‎, 08-15-2017 02:41 PM
    kruskal-wallis anova
    • Replies: 1
    • Views: 205
    08-16-2017, 04:14 AM Go to last post
  3. A question on adjusted f effect size formula

    The F adjusted formula as I am aware is: sqrt where a is the number of conditions (a=3 for my case), N the total sample size (N=30 for my case...

    Started by Aaron Ang‎, 09-22-2017 03:31 AM
    • Replies: 0
    • Views: 195
    09-22-2017, 03:31 AM Go to last post
  4. Meta-analysis for Pre vs Post (Which SD to use)

    Hello everyone, I have extracted data from longitudinal studies that have collected data on pre and post time points. All studies have same time...

    Started by azizfar‎, 10-16-2017 12:54 AM
    estimating sd, meta-analysis, pre vs post, sd pooled
    • Replies: 3
    • Views: 176
    10-16-2017, 07:58 AM Go to last post
  5. Question Which statistic should i use?

    Hello, I don't know which statistic i should use for my situation: I have 30 spaceships with different caracteristics. I need to buy one,...

    Started by CRD‎, 09-28-2017 09:59 AM
    • Replies: 3
    • Views: 166
    09-28-2017, 11:53 AM Go to last post
  6. Need help to determine statistical method

    Dear Friends, I'm going to test that significant difference of social security measures among Pensioner, epf beneficiaries and non beneficiaries....

    Started by Ruwan85dissanyake‎, 10-03-2017 07:18 AM
    • Replies: 0
    • Views: 146
    10-03-2017, 07:18 AM Go to last post
  7. Statistical Tools for Analysis of Effect of Light, Temp, CO2, and pH on Growth Rate

    My question is, what may be the ideal tools to analyze the data from this experiment and what are some resources you can recommend to learn about...

    Started by wilmpat‎, 08-07-2017 12:36 PM
    biostatistics, growth rate, multivariate, plant, r code
    • Replies: 0
    • Views: 140
    08-07-2017, 12:36 PM Go to last post
  8. Which method is correct for my tasks(methodological question)

    I have data on 80 motors, on each cycle, for each motor, different sensors give an indication. How do I suggest on the basis of this data that the...

    Started by psygrm‎, 10-12-2017 06:28 AM
    methodology
    • Replies: 0
    • Views: 139
    10-12-2017, 06:28 AM Go to last post
  9. Which model/function should I choose for a variable arrival-rate ?

    Now, I need to resolve a real problem. But because of lacking of statistic knowledge, I do not know how to choose a suitable statistic model/function...

    Started by Jingzhao‎, 10-01-2017 05:17 AM
    arrival model, arrival time, arrival-rate, poisson, variable arrival-rate
    • Replies: 0
    • Views: 135
    10-01-2017, 05:17 AM Go to last post
  10. (URGENT!) Simulating expectations and a conditional expectation

    I need to simulate a conditional expectation of the form: E (Xi^2 /(||X||^2 +h) | R^2 = ||X-T||^2 + ||U||^2 , Zi^2= (Xi - Ti)^2) Where X~N(T,I_p),...

    Started by younes.ommane‎, 10-04-2017 08:38 AM
    conditional expectation, expectation, simulation, spherical statistics
    • Replies: 0
    • Views: 121
    10-04-2017, 08:38 AM Go to last post
  11. Financial Research -> Event Study (of stock prices), which Research Strategy?

    I do an Event Study to study stock price reactions to a specific event. I don't understand how this fits in the research onion: Could...

    Started by Mastauser‎, 10-02-2017 07:55 AM
    • Replies: 0
    • Views: 120
    10-02-2017, 07:55 AM Go to last post
  12. Probability of a subjective event based on historical subjective data . Forecasting

    Lately i developed an idea of understanding the behavior of kids in their childhood. I was wondering how kids are molded into different adults in no...

    Started by sree‎, 08-31-2017 03:35 AM
    • Replies: 0
    • Views: 104
    08-31-2017, 03:35 AM Go to last post
  13. Average effect size between factors and within an experimental condition

    Dear all, I am interested in an average effect size between heart rate and anxiety. Anxiety is separated in 2 factors (F1 and F2), and I would...

    Started by Stabilo‎, 10-16-2017 06:18 AM
    correlated correlations, effect size, meta analysis
    • Replies: 0
    • Views: 76
    10-16-2017, 06:18 AM Go to last post

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