1. Announcement:
05-10-2017
Views:
1,960
Page 5 of 54 First 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 ... Last
Threads 241 to 300 of 3195

# 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: 18,796
10-11-2014, 12:02 PM
1. ### Bayesian updating or...?

Hi There, I'm new to this forum and also not an experienced statistician but I have a question. In my research I'm facing a problem that...

• Replies: 0
• Views: 1,283
04-18-2012, 10:18 AM
2. ### Bayesian Variable Transformation (solve for PDF)

Hi I'm struggling with where to start for this variable transformation problem. X~Bin(N,p) so that p(X=x) = (N choose x) * (p^x) * (1-p)^(N-x) ...

• Replies: 2
• Views: 2,203
09-14-2011, 06:11 PM
3. ### Bayesian vs. Frequentist for the applied researcher

There's been a lot of talk about Bayes lately in my life, talkstats, class, articles etc. I feel like it's becoming something researchers can't hide...

• Replies: 2
• Views: 1,802
11-26-2012, 07:30 PM
4. ### Bayesian: Defining priors from *same* data set you're modeling

I believe that it is inappropriate to define prior distributions based on the same data you will be analyzing with those priors. In other words, the...

• Replies: 1
• Views: 2,538
09-22-2011, 07:47 PM
5. ### beating the rules at discrete sampling

hi, I am looking at the question of how to sample rare occurances, like a rare defect in a manufacturing line. If I use the standard sample size...

• Replies: 4
• Views: 2,724
06-11-2015, 02:42 AM
6. ### Before/after surgery comparison

Hi! I am currently doing experiments on song birds looking at pre- and post surgery data. I have 10 male birds each singing at least 100 songs both...

• Replies: 7
• Views: 1,450
02-04-2014, 09:20 AM
7. ### Beginner Statistics for Repeatability/Reproducibility

Hi all, I'm new to this forum and seeking help regarding stats for a research project. My stats background is minimal (one college level class)...

• Replies: 0
• Views: 1,038
04-12-2012, 08:50 PM
8. ### Best Approach

Hi, I am looking to analyse a data set consisting of one dependent variable - respondent satisfaction values ranging from 1 to 10 - with three...

• Replies: 2
• Views: 2,459
02-23-2011, 11:38 AM
9. ### Best design for this experiment?

Hello all. I am having some trouble with my experiment and would be the best way to analyze the data. I have 4 different chemicals each at one...

• Replies: 16
• Views: 4,922
08-26-2011, 04:55 PM
10. ### Best factor analysis settings in SPSS ?

Hello Where i can get the best setting for factor analysis in spss for descriptives, extractions, rotations, scores, and options. I dont mind...

• Replies: 1
• Views: 1,991
11-24-2014, 11:17 AM
11. ### Best method for analysing repeated measures data to show correlation

Hello Thanks in advance for you help. I am currently conducting an experiment and would like to get opinions on the best way to go about...

• Replies: 0
• Views: 1,147
05-23-2013, 09:43 AM
12. ### Best method to analyze mediation and moderation with ordinal data?

Hello! I'm new here (and to statistics as well). I could use your advice about how to analyze the data for my master thesis. The first part of...

• Replies: 7
• Views: 6,376
05-24-2013, 11:26 AM
13. ### Best Method to Calculate P-Values for These Data?

Hello. I am a first year chemistry Ph.D. student with very little statistics experience. I am working with biophysical data, performing statistical...

• Replies: 2
• Views: 1,579
08-10-2014, 11:17 AM
14. ### Best Methodology for Solving for a Dummy Variable

Hi everyone. This is my first post on the forum and unfortunately is an act of frustration after reading many articles and textbook sections without...

• Replies: 1
• Views: 1,088
12-31-2015, 11:26 AM
15. ### best presentation of data to aid analysis

Hello, I need some help with formulating a methodology for my current dissertation. I am investigating the impact of ability setting on students....

• Replies: 0
• Views: 2,198
03-12-2009, 02:02 AM
16. ### Best rating scale to use for my research?

• Replies: 0
• Views: 1,024
11-10-2012, 11:14 PM
17. ### Best Stat Question Ever?

Got this off Twitter (@galka_max) and found it interesting: If you choose an answer to this question at random, what is the chance you will get it...

• Replies: 8
• Views: 909
09-06-2017, 01:14 AM
18. ### Best statistical analysis to use for my research (ANOVA or other correlation test)

Greetings! I am new in this forum and I have very little knowledge in statistics. I have a research about air pollution. I get samples of air...

• Replies: 0
• Views: 1,634
10-19-2012, 06:25 AM
19. ### Best Statistical Test for small sample size

I am looking at changes in endotracheal tube cuff pressures pre and post subglottic suctioning. I have pre and post data for four different initial...

• Replies: 2
• Views: 1,816
06-26-2013, 09:11 AM
20. ### Best suited forecasting method for forecasting of sales of truck/tractors?

Best suited forecasting method for forecasting of sales of truck/tractors? The constraints for forecasting are 1.The sale figures of trucks do not...

• Replies: 0
• Views: 1,224
05-23-2012, 10:06 AM
21. ### Best test to use?

Hi Everyone, I am trying to design a medical study and having difficult for teh best to use, in summary: Stage 1: Patients are classified into...

• Replies: 0
• Views: 1,640
09-15-2011, 06:02 PM
22. ### Best tool to analyse data

Hi, I have 20 years of data about calibration reports of various clients which primarily shows three-variables. COMPANY A YEAR 2001 1.)...

• Replies: 1
• Views: 493
06-21-2017, 10:59 AM
23. ### best way to create ANOVA groups from a range of scores?

Hello Everyone, I have been involved in a discussion with my Experimental Methods of Psychology Instructor about the best way to divide a range of...

• Replies: 5
• Views: 2,964
09-24-2011, 04:46 AM
24. ### best way to use Cronbach's alpha?

I am making my first foray into survey based research. A quick question or two about Cronbach's alpha: My survey included questions about...

• Replies: 1
• Views: 6,750
06-07-2010, 03:55 PM
25. ### Beta error

Hey guys I really need help from you to calculate the beta error of two different samples. The values are: Average rate of the first sample:...

• Replies: 0
• Views: 696
12-09-2013, 09:08 AM
26. ### Between-Group and Within-Group PCA

Hi all, I'm running a PCA with two species (one fossil and one extant) divided into multiple geographic groups. The program I'm using is called...

• Replies: 0
• Views: 2,418
03-16-2013, 08:28 PM
27. ### BH, why this threshold ?

Hello, I have a theoretic question. When using the BH procedure for controlling the false discovery rate, we compare the p values in this way: ...

• Replies: 1
• Views: 1,446
08-02-2012, 06:01 PM
28. ### Bhattacharyya metric as a chi-squared type statistic

Hi all, I'm reading about the relation between the Bhattacharyya metric and the chi-squared metric:...

• Replies: 0
• Views: 732
08-21-2016, 05:47 PM
29. ### 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|)+ ...

• Replies: 4
• Views: 5,711
03-30-2011, 02:38 PM
30. ### Bic

I am a graduate student who wants to learn more about the Bayesian information criterion (BIC) for a project I am working on. What do you think is...

• Replies: 0
• Views: 1,604
08-11-2011, 09:51 PM
31. ### Bigger sample size and less good results or smaller sample size but better results

I hope this is the right place to post this question. I'm doing my thesis based upon the data of my professors research study. I want to look into...

• Replies: 0
• Views: 1,539
04-02-2015, 10:15 AM
32. ### binary choice with fisheries data over time

Hi all, I am new to the forum so please bear with me if I am not following protocol in my post. I have fisheries data which is vessel specific....

• Replies: 4
• Views: 1,498
11-19-2015, 02:19 PM
33. ### Binary logistic regression with no significant predictors

Hi everyone, I have a question for logistic regression but i guess it applies to all kinds of regression analysis. I have a model with many...

• Replies: 3
• Views: 11,254
05-19-2012, 06:43 AM
34. ### Binary Variable Split

Hey everybody, Following problem: I did research and collected 207 responses. One of the results of the survey is a binary variable. Lets call the...

• Replies: 0
• Views: 1,092
06-13-2013, 09:19 AM
35. ### Binning Question

Hi everyone! For logistic regressions, is it ever ok to bin a continuous independent variable and then put both the continuous version and bins...

• Replies: 0
• Views: 1,080
10-24-2013, 04:17 PM
36. ### Binomial Test that does not assume indepence? (using a repeated measures design)

Hi, I am looking for a way to analyze data for the following experiment: subjects were presented with two separate acoustic signals at the same...

• Replies: 1
• Views: 2,691
08-23-2009, 01:08 PM
37. ### Biology grad student needs help - Scorpion Data

Hello, I am looking for help with PCA, and stuff like DFA and MANOVA. I study scorpions, and as part of my research I have used genetic methods...

• Replies: 1
• Views: 2,993
02-15-2011, 04:11 AM
38. ### Bivariate Contour Ellipse Area

I have found a research paper, where there is need to calculate the area of a bivariate contour ellipse. I am familiar with drawing a confidence...

• Replies: 0
• Views: 3,582
07-21-2016, 07:25 AM
39. ### Blocked ANOVA: unequal amount of data for the different blocks?

Hi guys, So I'm conducting an experiment where I'm using a blocked ANOVA and have a few questions about my data set. I'm looking at the abundance...

• Replies: 0
• Views: 1,207
04-28-2015, 08:15 PM
40. ### BLUP of a specific difference is biased

Can anyone explain how BLUPs can be unbiased but the BLUP of of a difference is biased. I have found this statement in numerous papers eg Smith,...

• Replies: 1
• Views: 1,194
09-05-2013, 04:32 AM
41. ### BMA (Bayesian Model Averaging ) or a classic fixed effects macro panel ?

Hey folks I would like your opinion..So I need to decide between a BMA (Bayesian Model Averaging ) or a classic fixed effects macro panel in order to...

• Replies: 0
• Views: 1,037
abc
12-22-2013, 01:55 PM
42. ### Bonferroni correction (significance level and CI)

Hi there, I need another advice. I'm dealing with the problem of multiple testing and I was planning to use Bonferroni correction. Because I...

• Replies: 1
• Views: 2,012
07-14-2016, 07:53 AM
43. ### Bonferroni Correction Factor !!!

Hello, What exactly Bonferroni correction factor means? Why we calculate it in our study? Thanks, Bala

• Replies: 9
• Views: 25,798
07-14-2009, 06:33 AM
44. ### Bonferroni correction in multiple linear regressions: HELP NEEDED

Hi, I'm running the following regression in R for 16000 promotors and one Phenotype (let's say Systolic Blood Pressure, RR_sys): lm (RR_sys ~...

• Replies: 0
• Views: 2,606
12-14-2013, 08:01 AM

I have sort of a weird question. I am reading a journal article and basically the authors used a Kruskal-Wallis test to compare the median values of...

• Replies: 2
• Views: 2,984
01-31-2012, 01:18 PM
46. ### Book for Applied Panel Data Analysis

Hello, I am looking for a book with the topic applied panel data analysis. I already had a look on these ones: ANALYZING PANEL DATA (P) This...

• Replies: 0
• Views: 1,235
10-03-2013, 10:43 AM
47. ### bootstrap and non-stationarity

Dear all, Is it true to say: If a time series X(t) does not satisfy the strict stationarity condition: P(X(t+1), X(t+2), ... , X(t+T)) =/=...

• Replies: 0
• Views: 2,566
11-03-2009, 02:06 PM
48. ### Bootstrap bias

Good day forum, I'm using a bootstrap approach to get a better understanding of a sampling distribution. I've heard that the bootstrap approach...

• Replies: 0
• Views: 1,156
11-05-2012, 01:49 PM
49. ### Bootstrap for estimating parameters...

Hi. Let say we have only one original sample in which we are interested only on one statistics c of this sample, e.g. median. And let say we want...

• Replies: 0
• Views: 1,740
03-01-2011, 11:03 PM
50. ### Bootstrapping Dependent Data

Is there any bootstrapping procedure for dependent data which is not based on any specific model?

• Replies: 2
• Views: 2,193
03-16-2011, 10:03 PM
51. ### bounded pareto distribution

please any one can help me about the inversion method that is used to form a bounded pareto I can't understand the inversion method that is used in...

• Replies: 1
• Views: 2,142
BGM
12-20-2014, 04:25 PM
52. ### bounds of beta distributions

I'd like to estimate the lower and upper bounds of a general beta distribution, using 5 and 95 percentiles. I already know how to estimate the mean...

• Replies: 0
• Views: 2,153
08-20-2009, 11:20 AM
53. ### Box's Test after outlier Removal

Hello everyone, I have searched the forum and couldn't find an answer, so I figured I would start a new thread. I am running a 1-way MANOVA for...

• Replies: 0
• Views: 1,262
08-02-2016, 01:58 PM
54. ### Bradley-Terry model and the difference between football goals?

Hi everyone ! I'm actually working on the Bradley-Terry model, and I cannot find any answer for my problem... Perhaps you can help me ?! The...

• Replies: 0
• Views: 1,542
01-18-2012, 01:08 PM
55. ### breaking data into training and testing (hold-out) sets

Dear Stats Forum, I am a grad student with an introductory stats background. For my research, I'm conducting an experiment to compare the predictive...

• Replies: 3
• Views: 2,744
07-21-2012, 04:47 PM

Page 5 of 54 First 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 ... Last

Use this control to limit the display of threads to those newer than the specified time frame.

Allows you to choose the data by which the thread list will be sorted.

Note: when sorting by date, 'descending order' will show the newest results first.