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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: 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...

• Replies: 14
• Views: 18,620
10-11-2014, 12:02 PM
1. ### 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,...

• Replies: 3
• Views: 150
CRD
09-28-2017, 11:53 AM
2. ### Grouping Observations

Hello! New to the forum here and looking for help. I have 3 separate "Urban" monitoring locations. 10 observations were made at each location. ...

• Replies: 3
• Views: 218
09-29-2017, 03:59 PM
3. ### 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...

• Replies: 0
• Views: 127
10-01-2017, 05:17 AM
4. ### 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...

• Replies: 0
• Views: 114
10-02-2017, 07:55 AM
5. ### 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....

• Replies: 0
• Views: 133
10-03-2017, 07:18 AM
6. ### (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),...

• Replies: 0
• Views: 114
10-04-2017, 08:38 AM
7. ### Generalised Lambda Distribution

Hello, Can anyone help me, I am trying to use the Generalized Lambda distribution to model some parts in an assembly, but apart from Wikipedia...

• Replies: 4
• Views: 190
10-09-2017, 06:19 AM
8. ### 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...

• Replies: 4
• Views: 185
10-10-2017, 06:26 PM
9. ### Relevance of covariates?

I have a big group A of individuals that have one common characteristic that make them part of a study in which certain binary variable has to be...

• Replies: 2
• Views: 218
10-11-2017, 10:37 AM
10. ### 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...

• Replies: 0
• Views: 122
10-12-2017, 06:28 AM
11. ### 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...

• Replies: 0
• Views: 58
Yesterday, 06:18 AM
12. ### 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...

• Replies: 3
• Views: 134
Yesterday, 07:58 AM

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