1. Announcement:
    Want access to a chatbox?
    Dason ‎(Devorador de queso)
    05-10-2017
    Views:
    1,784
+ Post New Thread
Page 11 of 54 FirstFirst 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 ... LastLast
Threads 601 to 660 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: 18,636
    10-11-2014, 12:02 PM Go to last post
  1. Normalizing the distribution of time data

    Hello everybody, i have time data from a test that was conducted online. Basically the time that took for every user to complete each page of the...

    Started by micdhack‎, 02-09-2011 08:03 AM
    • Replies: 0
    • Views: 3,319
    02-09-2011, 08:03 AM Go to last post
  2. Calibration for COX model

    Hi everyone, I'm looking for the methodology to compute the calibration of the COX model with time-dependent, I found few articles on the net...

    Started by nedjarh‎, 02-09-2011 09:47 AM
    • Replies: 0
    • Views: 3,321
    02-09-2011, 09:47 AM Go to last post
  3. Question Normality analysis

    hye guys... i need a help.. Can someone show me how to run the normality analysis... In my questionnaires, I have 4 independent variables and...

    Started by ryan88‎, 01-26-2011 11:08 AM
    • Replies: 7
    • Views: 3,146
    02-09-2011, 06:58 PM Go to last post
  4. Which test to run (pretest-posttest)

    Hi there! What is the best test to use to analyze data involving a pretest and posttest given to two different treatment groups? Thanks!

    Started by Brandi‎, 02-10-2011 02:01 PM
    • Replies: 10
    • Views: 7,494
    02-11-2011, 10:46 PM Go to last post
  5. inferences on deterministic models

    Hello, Please let me know if I am posting in the wrong place. Thanks I am working on a project where I have a mathematical epidemic model and I...

    Started by LHoward‎, 02-13-2011 09:36 AM
    deterministic, epidemic, model, stochastic
    • Replies: 0
    • Views: 2,112
    02-13-2011, 09:36 AM Go to last post
  6. Repeated measures ANOVA + multiple comparisons corrections

    Hello everybody, I had a question in regards to ANOVAs and multiple comparisons corrections (Bonferroni mostly). I am running a 3 way repeated...

    Started by rohanp16‎, 02-13-2011 09:12 PM
    • Replies: 0
    • Views: 2,772
    02-13-2011, 09:12 PM Go to last post
  7. Model Averaging

    I am doing a project in school and the guideline suggests using Bayesian Model Averaging which is just a formula to determine the model weight. I...

    Started by poilkjmnbth‎, 02-14-2011 11:14 PM
    • Replies: 0
    • Views: 1,764
    02-14-2011, 11:14 PM Go to last post
  8. 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...

    Started by mattrgraham‎, 02-14-2011 10:24 PM
    • Replies: 1
    • Views: 2,963
    02-15-2011, 04:11 AM Go to last post
  9. Likert scale analysis

    Hi all! I want to ask that i have likert scale questionnaire with 6 points scale. If i am going to analyze using as interval data, that means i have...

    Started by hepymoon‎, 02-15-2011 08:13 AM
    • Replies: 0
    • Views: 3,905
    02-15-2011, 08:13 AM Go to last post
  10. Research Design

    Hi there, i'm wondering if you guys could guide me a bit with my plans. Basically im intrested in looking at paranoid ideation (thr presence of...

    Started by blue2‎, 10-28-2010 04:48 PM
    • Replies: 9
    • Views: 4,003
    02-15-2011, 09:15 PM Go to last post
  11. whether opinion differes among respondents from different group

    I want to test whether response differ among groups regarding e-government interoperability. There are 14 itens regarding interoperability (Likert...

    Started by dibakar‎, 01-17-2011 02:41 AM
    • Replies: 1
    • Views: 2,262
    02-16-2011, 03:26 AM Go to last post
  12. What statistical test should I use to check to ratio?

    I have data for two sets of sample in the form of frequency of three category.Say A,B & C are three category and I have data for sample 1 as ...

    Started by ch.niladri‎, 02-09-2011 01:21 AM
    • Replies: 6
    • Views: 14,854
    02-16-2011, 01:37 PM Go to last post
  13. Likelihood Ratio Test for general hypotheses

    Hi, The original paper (Wilks, 1938) describing the Likelihood Ratio Test considers a null hypothesis stating that a subset of the parameters from...

    Started by dfirka‎, 02-14-2011 01:29 PM
    likelihood ratio test
    • Replies: 2
    • Views: 5,860
    02-17-2011, 07:54 AM Go to last post
  14. Kolmogorov-Smirnov to Lattice Path mapping

    I often see the claim that the null distribution of Kolmogorov's D+ statistic maps onto a lattice path problem that requires computing the number of...

    Started by ichbin‎, 02-17-2011 05:11 PM
    • Replies: 0
    • Views: 2,385
    02-17-2011, 05:11 PM Go to last post
  15. RCBD Subsampling or Not?

    I am currently working on a project looking to compare seedling height growth between two different years. The project is set up like this: There...

    Started by jmc6242‎, 02-18-2011 04:23 PM
    • Replies: 0
    • Views: 1,995
    02-18-2011, 04:23 PM Go to last post
  16. Unhappy Determining a new variance

    I am trying to understand a property of ML Estimates, that their distribution is asymptotically normal with covariance matrix inverse of Fisher's...

    Started by justin.sharber‎, 02-19-2011 12:13 AM
    • Replies: 1
    • Views: 2,492
    02-19-2011, 04:30 PM Go to last post
  17. population normally distributed, sample not, parametric test allowesd?

    Hi guys, Imagine I know that my variable of interest (say blood glucose) is normally distributed in the population. But I have a small sample and...

    Started by BBD‎, 12-08-2010 09:19 AM
    • Replies: 8
    • Views: 18,152
    02-19-2011, 07:26 PM Go to last post
  18. Question MLE for given mean

    The observed value of mean of a random sample from N(\theta,1) distribution is 2.3. If the parameter space is \Theta=\{0,1,2,3\}, what is the MLE of...

    Started by Sambit‎, 02-21-2011 10:09 AM
    • Replies: 2
    • Views: 2,221
    02-21-2011, 10:59 AM Go to last post
  19. What is the correct statistical test for the Root Mean Squared error?

    Thank you an answer to this question is no longer required. I'm not able to delete this though!

    Started by SiBorg‎, 02-22-2011 04:37 AM
    • Replies: 0
    • Views: 2,291
    02-22-2011, 04:37 AM Go to last post
  20. Fisher LDA

    Hi, How do I incorporate knowledge of prior class probabilities p_i into Fisher LDA? I think Fisher LDA assumes p_i = 1/c always, with c=# of...

    Started by omrit‎, 02-22-2011 08:54 AM
    • Replies: 2
    • Views: 4,099
    02-22-2011, 11:39 AM Go to last post
  21. paper about different robust approach

    I can not find any paper about, robust statistics where they are looking to outliers not like a outlierts but like that model miss specification. ...

    Started by Peterko‎, 02-22-2011 01:03 PM
    robust
    • Replies: 0
    • Views: 1,739
    02-22-2011, 01:03 PM Go to last post
  22. Please help: Need a method to compare rankings over different circuits

    Hello, I do not have a background in statistics. I need help finding a methodology to compare the performance of a given set of items under...

    Started by doubidou‎, 02-22-2011 05:07 PM
    • Replies: 0
    • Views: 2,137
    02-22-2011, 05:07 PM Go to last post
  23. Hypothesis testing for comparing single channels of states in multivariate HMM

    In brief: I have a multivariate observational output with low covariances, each dimension of which can be considered the result of a distinct hidden...

    Started by hythlodaeus‎, 02-14-2011 02:21 PM
    hidden markov models, hypothesis testing
    • Replies: 1
    • Views: 2,456
    02-23-2011, 03:34 AM Go to last post
  24. 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...

    Started by cockett7‎, 02-22-2011 06:42 PM
    • Replies: 2
    • Views: 2,417
    02-23-2011, 11:38 AM Go to last post
  25. Pharmacology Exp Help

    Hello. I have been volunteering at a lab and need help with Behavioral Analysis. My data points are activity (locomotion) "counts" of 10 min...

    Started by slammer922‎, 02-10-2011 12:44 PM
    • Replies: 5
    • Views: 2,586
    02-24-2011, 10:52 AM Go to last post
  26. Prerequisite for gene regulatory network research (systems biology)

    I would appreciate any advice or directions on what to study and in what order, from basic statistics and probability course to were one is able to...

    Started by anog‎, 02-24-2011 03:46 PM
    biology, cell, model selection, system biology, systems
    • Replies: 0
    • Views: 2,897
    02-24-2011, 03:46 PM Go to last post
  27. linear mixed model in SPSS - how?

    Hi guys, Imagine a nonrandomized trial with 2 groups (control and treatment) and two time points (pre and post). An ANOVA of change seems superior...

    Started by BBD‎, 02-02-2011 11:58 AM
    • Replies: 2
    • Views: 18,738
    02-25-2011, 02:56 PM Go to last post
  28. Correlation or Difference?

    hello everybody, i have a question about which method would be more appropriate. I have a 4 point ordinal dependent variable. I also have 3...

    Started by micdhack‎, 02-26-2011 08:03 AM
    • Replies: 2
    • Views: 5,576
    02-26-2011, 11:41 AM Go to last post
  29. large samples and resampling stats

    First post here. Mods- please move thread if in wrong place. I am working with a very large dataset (total n = 30,000+) of normally distributed...

    Started by chardinej‎, 02-28-2011 10:07 AM
    bootstrap, large, resampling, samples
    • Replies: 1
    • Views: 3,256
    02-28-2011, 12:51 PM Go to last post
  30. 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...

    Started by tsukiko‎, 03-01-2011 11:03 PM
    • Replies: 0
    • Views: 1,707
    03-01-2011, 11:03 PM Go to last post
  31. Office for National Statistics YouTube channel

    The Office for National Statistics has recently launched a new YouTube channel explaining some of the stories about their statistics. Its a new...

    Started by Jamie Jenkins‎, 03-03-2011 05:31 PM
    • Replies: 0
    • Views: 3,758
    03-03-2011, 05:31 PM Go to last post
  32. Common method variance

    Hi, I am analysing a self reporting survey. From the survey is designed to look at 12 constructs. Each of these constructs have either 1,2,3...

    Started by john_cappa‎, 03-01-2011 10:43 AM
    • Replies: 2
    • Views: 3,800
    03-03-2011, 08:52 PM Go to last post
  33. which statistical test to use in spss

    I have a variable (dependent) and five independent variables. How can I test if the five variables affect the dependent variable? Which test should...

    Started by hahahihihuhu‎, 03-02-2011 12:38 PM
    • Replies: 1
    • Views: 5,796
    03-03-2011, 08:56 PM Go to last post
  34. Converting eta squared to Cohen's d

    I need to convert eta squared effect sizes to Cohen's d. It's for a meta-analysis paper, so I don't have the original data set. Is it possible...

    Started by lk145‎, 02-16-2011 12:34 AM
    • Replies: 5
    • Views: 45,557
    03-03-2011, 09:11 PM Go to last post
  35. t-tests after three-way ANOVA?

    Hi all, I've just run a three-way ANOVA on my data (3 IVs, 1 DV). I've got some main effects, as well as a three-way interaction effect. Am I...

    Started by psychi‎, 03-01-2011 05:29 AM
    anova, t-test, three-way anova
    • Replies: 3
    • Views: 5,840
    03-04-2011, 05:20 PM Go to last post
  36. Testing for a change in mean in a time series

    Suppose I have m observations from a time series before some specified date, and n additional observations after that date. The mean of the time...

    Started by Buchuck‎, 03-05-2011 12:41 AM
    • Replies: 1
    • Views: 4,999
    03-05-2011, 09:35 AM Go to last post
  37. Analysis of Categorical Data

    Hello friends, I'am doing intermediate statistics for second year and I'am having some issues with this chapter. My professor told...

    Started by Bajic‎, 03-06-2011 04:44 PM
    • Replies: 0
    • Views: 3,207
    03-06-2011, 04:44 PM Go to last post
  38. Any way to test significance?

    First off, pardon my novice-level knowledge of statistics. If I make any ridiculous assumptions or whatever, this is why! So I'm doing a bit of...

    Started by chaoninja‎, 03-05-2011 07:18 PM
    • Replies: 7
    • Views: 3,342
    03-07-2011, 02:59 AM Go to last post
  39. Significance testing for proportions (NPS)

    I have 2009 and 2010 NPS (Net Promoter Score) survey results. Now I want to test if the change in 2010 NPS from 2009 is statistically significant or...

    Started by Kevin_ind‎, 03-01-2011 02:26 AM
    • Replies: 2
    • Views: 7,685
    03-07-2011, 05:17 AM Go to last post
  40. power of Krusal-wallis test when normality doesn hold

    pvalue = rep(NA, 1000) # repeat 1000 times pvaluekw = rep(NA, 1000) n = rep(25, 3) group = rep(1:3, n) for (i in 1:1000){ x1 <- rt(25,df=3)...

    Started by xixihaha‎, 03-07-2011 08:36 AM
    • Replies: 1
    • Views: 3,371
    03-07-2011, 10:32 AM Go to last post
  41. chi-square assumptions with survey data

    Hi guys, I've been asked to run some analyses on some survey data and since it's been a long time since i ran one, I just wanted to check I'm not...

    Started by Elysse‎, 03-09-2011 07:56 PM
    assumptions, chi-squared, survey
    • Replies: 1
    • Views: 2,866
    03-10-2011, 02:10 AM Go to last post
  42. Two-step PPS stratified sample: how to choose additional respondents?

    Hello, I find nothing in the literature on how to deal with this, so here goes. We have a relatively complex sample, and we need to acquire...

    Started by autarkie‎, 03-11-2011 03:46 AM
    • Replies: 0
    • Views: 4,276
    03-11-2011, 03:46 AM Go to last post
  43. Tests for nonnested models (Vuong, Clarke)

    When comparing generalized linear models, do the Vuong and Clarke tests require that the response distributions be the same? For example, could I...

    Started by CappyD‎, 03-12-2011 01:41 PM
    clarke, non-nested, nonnested, vuong
    • Replies: 0
    • Views: 3,682
    03-12-2011, 01:41 PM Go to last post
  44. Comparing within groups and across conditions

    Hi, I am not sure if anyone can help me, i have undertaken a large physiological study for my post grad, it is looking at stress hormones within...

    Started by sifry37‎, 03-14-2011 05:35 PM
    • Replies: 0
    • Views: 3,230
    03-14-2011, 05:35 PM Go to last post
  45. This may be extraordinarily easy

    I don't know which is why I am asking here on this forum. We are in the middle of a debate and I have absolutely no idea whatsoever of what the...

    Started by Blitzburgh‎, 03-14-2011 04:41 PM
    • Replies: 1
    • Views: 2,297
    03-14-2011, 06:19 PM Go to last post
  46. Non normal distributed Statistical Test

    I am doing Statistical test between independent variable vs dependent variable Independent : Numeric Data - eg: Age (5,6,78,19) Dependent :...

    Started by studentdoctor‎, 03-16-2011 09:56 AM
    • Replies: 1
    • Views: 3,406
    03-16-2011, 10:54 AM Go to last post
  47. Statistics for data analysis

    I'm currently writing up a research practical report for a study I did as part of my degree. I've become a little stumped when it comes to the theory...

    Started by Lemon‎, 03-11-2011 08:36 AM
    • Replies: 4
    • Views: 2,856
    03-16-2011, 07:21 PM Go to last post
  48. Bootstrapping Dependent Data

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

    Started by tsukiko‎, 03-16-2011 07:49 PM
    • Replies: 2
    • Views: 2,166
    03-16-2011, 10:03 PM Go to last post
  49. SEM - indirect effects

    Hi all, Software for SEM (Amos, Lisrel) provides estimates for indirect effects, and small size coefficients are often found to be statistically...

    Started by luic‎, 03-18-2011 02:46 AM
    • Replies: 1
    • Views: 8,566
    03-18-2011, 03:41 AM Go to last post
  50. xtDPDsys postestimation

    Hi all I run two equations using xtdpdsys, the postestmation came as follows First equation estat sargan Sargan test of overidentifying...

    Started by momo‎, 03-19-2011 05:37 AM
    • Replies: 0
    • Views: 4,772
    03-19-2011, 05:37 AM Go to last post
  51. Catching a growth trend variable for 5 yearly sales number

    Hey everyone, I'm doing research in international business. I will skip the details and get to my basic problem directly. I have 300 firms in...

    Started by raulz‎, 03-19-2011 07:39 AM
    • Replies: 0
    • Views: 2,600
    03-19-2011, 07:39 AM Go to last post
  52. Help with dissertation

    Hello everyone. I need someone to make up a table for me for my dissertation. I've got the answers to it but can't figure out how the table can be...

    Started by Vicks‎, 03-19-2011 09:55 AM
    • Replies: 1
    • Views: 2,717
    03-19-2011, 09:58 AM Go to last post
  53. Contingency tables with an expected value of 0

    Hi all. I would like to compare two contingency tables (expected and observed). Unfortunately, one of my expectancy cells is 0, which rules out a...

    Started by DanaSchneiderDJS‎, 03-18-2011 09:29 PM
    • Replies: 6
    • Views: 6,986
    03-21-2011, 01:34 AM Go to last post
  54. Stats consulting assignment- need help!

    Hello! I'm working on a short stats assignment (4 pgs including graphs and appendices) and while I have the basics down (representative, variance,...

    Started by pretti.pear‎, 03-20-2011 06:38 PM
    • Replies: 1
    • Views: 2,043
    03-22-2011, 08:26 AM Go to last post
  55. Please give me feedback on my study proposal!

    Greetings, I work for a small software company, and we will be performing a statistical experiment on the effectiveness of a mobile learning...

    Started by FreddyZ‎, 03-22-2011 04:08 PM
    • Replies: 2
    • Views: 4,252
    03-23-2011, 11:20 AM Go to last post
  56. Missing values with Row and Column Totals

    Hello everyone, I'm working with government panel data (yearly data of manufacturing industry (row) by continent (column)) that has a lot (about...

    Started by zlatank‎, 03-23-2011 12:41 PM
    algorithm, data, imputation, missing values, sudoku
    • Replies: 0
    • Views: 1,909
    03-23-2011, 12:41 PM Go to last post
  57. Clustering Analysis when to stop the algorithm?

    I have a data set, let's assume 1,000 points, that I am attempting to form into clusters. I am using Hierarchical clustering in the sense that I...

    Started by wwreith‎, 03-24-2011 08:29 AM
    clustering, variance
    • Replies: 0
    • Views: 1,889
    03-24-2011, 08:29 AM Go to last post
  58. Mixed Model Covariance Structure

    I have a study with a somewhat unique experimental design which I would like to used Mixed Modeling to analyze. All subjects in the study were...

    Started by jmike‎, 03-24-2011 08:28 PM
    covariance, mixed methods, mixed models
    • Replies: 0
    • Views: 3,027
    03-24-2011, 08:28 PM Go to last post
  59. 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: 3,058
    03-24-2011, 11:47 PM Go to last post
  60. Difference needed for power in fixed population.

    Hi, I am designing a study to examine the difference made by implementing a new treatment strategy for a medical condition. I have become a...

    Started by schisms‎, 03-23-2011 05:38 AM
    power, significance
    • Replies: 7
    • Views: 3,354
    03-25-2011, 12:34 PM Go to last post

+ Post New Thread
Page 11 of 54 FirstFirst 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 ... LastLast

Thread Display Options

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.

Order threads in...

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

Icon Legend

Contains unread posts
Contains unread posts
Contains no unread posts
Contains no unread posts
More than 15 replies or 300 views
Hot thread with unread posts
More than 15 replies or 300 views
Hot thread with no unread posts
Closed Thread
Thread is closed
Thread Contains a Message Written By You
You have posted in this thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts






Advertise on Talk Stats