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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: 18,723
    10-11-2014, 12:02 PM Go to last post
  1. Help analyzing bird migration patterns?

    Hi. I am trying to analyze data I have on bird migration and am stuck on what I need to do. Basically, I have the maximum abundance of birds seen...

    Started by dlk2143‎, 01-29-2014 09:50 AM
    birds, compare, ecology, migration, trend analysis
    • Replies: 0
    • Views: 805
    01-29-2014, 09:50 AM Go to last post
  2. Help Anova

    hi everyone, I currently try to find an open source C/C++statistical library. Basically, I want to calculate the p and F value from oneway (or N...

    Started by 02020954‎, 12-12-2005 07:11 PM
    • Replies: 11
    • Views: 4,632
    12-14-2005, 05:55 PM Go to last post
  3. Help assessing convergence across categorical responses

    Hi folks I posted this in the SPSS section, but its actually more a question about which test to use so I think it belongs here. I'm working...

    Started by COFisher‎, 03-05-2015 11:07 AM
    • Replies: 0
    • Views: 927
    03-05-2015, 11:07 AM Go to last post
  4. help calculating needed sample size

    hi im conducting a study on a certain ratio in a blood exam (lets call it X) . I aim to say that there is a certain sensitivity (let say>80%) for...

    Started by urilee‎, 01-25-2015 04:22 AM
    • Replies: 0
    • Views: 1,138
    01-25-2015, 04:22 AM Go to last post
  5. Help Calculating Significance Between 5 Elementary School Data

    Hello, I am a school administrator in Oklahoma. I have five small elementary schools in my district. I often here from each of them that their...

    Started by rdarr‎, 12-08-2012 09:54 AM
    • Replies: 2
    • Views: 1,429
    12-11-2012, 08:46 AM Go to last post
  6. help choosing LDA situation to implement

    Hey all, I am a comp sci grad student interested in pattern recognition, and have been told that LDA is a good place to start before moving into...

    Started by dkwestbr‎, 10-06-2008 01:00 AM
    • Replies: 0
    • Views: 2,442
    10-06-2008, 01:00 AM Go to last post
  7. Help correlating Likert scale data with demographic profile

    I'm not knowledgeable about statistics, so please excuse any mistakes in phrasing. Our professor is currently on leave, and I don't have anybody else...

    Started by violet‎, 10-12-2010 02:57 AM
    • Replies: 4
    • Views: 6,404
    10-12-2010, 10:20 PM Go to last post
  8. Help deciding which analysis to run

    Hi all, I'm doing a study and having trouble deciding on the appropriate analysis. I'll give a simple example of what I'm trying to do and any help...

    Started by conrad2012‎, 03-23-2012 02:50 PM
    • Replies: 0
    • Views: 958
    03-23-2012, 02:50 PM Go to last post
  9. Help for Statistical Analysis for our project (using Statistical Estimation)

    Good day. I would like to ask for your help for our statistical analysis of our project. Our project is an alarm clock that is modified in a way that...

    Started by guuwey‎, 02-25-2014 06:15 AM
    • Replies: 1
    • Views: 918
    02-25-2014, 08:23 AM Go to last post
  10. Help for Web Log stats on blog site...

    Hello, I have been asked to run an on-going, weekly statistics rankings of topics on a website (blogs). Each blog author lists 'topics', selected...

    Started by gatorpower‎, 11-09-2009 03:27 PM
    • Replies: 1
    • Views: 2,366
    11-10-2009, 03:01 PM Go to last post
  11. Help in categorizing data

    Hi, I am working on my dissertation and am stuck with the data analysis. I am dealing with 4 variables, all of which are categorical variables....

    Started by natashaakaul‎, 05-15-2013 04:35 AM
    • Replies: 0
    • Views: 1,038
    05-15-2013, 04:35 AM Go to last post
  12. Help in determining a proper statistical test an approach for research question

    Ik have a problem in determining the right statistical test for my research. First I will give some background information. I want to research the...

    Started by Redmar89‎, 02-19-2015 08:48 AM
    l test, logit, regression, research, statistica
    • Replies: 0
    • Views: 1,326
    02-19-2015, 08:48 AM Go to last post
  13. Help in Genetic Analysis

    Hy, what is the better test (or software) to compare the genotype (or allele) frequency of several gene mutations, at the same time in two...

    Started by mnasi‎, 09-10-2008 08:30 AM
    • Replies: 0
    • Views: 2,441
    09-10-2008, 08:30 AM Go to last post
  14. help in Real survey data analysis‏

    would you please guide me to analyze it? i will tell u overall view of the questionnaire and goals and hope to help me how to analyze it the...

    Started by kormbo2002‎, 05-19-2012 02:36 PM
    • Replies: 2
    • Views: 40,870
    05-19-2012, 03:47 PM Go to last post
  15. Help in result interpretation

    Hi All, I analysed a data set using descriptive analysis and I need someone to please help me interprete the results. Below is the result...

    Started by Sisi‎, 05-07-2012 03:53 AM
    • Replies: 0
    • Views: 979
    05-07-2012, 03:53 AM Go to last post
  16. Post Help in study design! URGENT!

    Suppose I do a retrospective review of patients records of two groups of patients.. one with diagnosis A and the other group with diagnosis B. And I...

    Started by afrasyabkhan‎, 03-08-2009 03:38 AM
    • Replies: 0
    • Views: 2,422
    03-08-2009, 03:38 AM Go to last post
  17. Help Me ........

    I am looking for a topic for my Mphil research. I am fed up with searching for a topic. i am interested in computational statistics, multivariate...

    Started by hpanoo‎, 10-26-2011 09:26 AM
    • Replies: 6
    • Views: 1,996
    10-27-2011, 03:57 PM Go to last post
  18. help me, i need some ideas for my dissertation

    Okay i am going to conduct a regression analysis to explain the variation in patents per capita across regions in China. I have done some...

    Started by danswe3‎, 03-30-2011 12:44 PM
    • Replies: 1
    • Views: 2,407
    03-30-2011, 06:24 PM Go to last post
  19. Help need on 'Panel Corrected Standard Errors' in SAS

    I have panel regression to estimate with time fixed effects and correcting standard errors using 'Panel Corrected Standard Errors', where PCSE...

    Started by jb2755‎, 01-24-2012 02:25 PM
    • Replies: 0
    • Views: 3,163
    01-24-2012, 02:25 PM Go to last post
  20. help needed (PLEASE) on which statistical analysis to use

    I am looking at the relationship between attachment in childhood and attachment in adult relationships. Attachment in childhood has been measured...

    Started by dgullis‎, 11-22-2013 03:17 PM
    • Replies: 0
    • Views: 1,348
    11-22-2013, 03:17 PM Go to last post
  21. Help needed - estimating effect size

    Hi everyone, I'd really appreciate any help/guidance in solving a little problem of mine. I need to know how to estimate an effect size...

    Started by that_guy_‎, 08-01-2008 12:13 PM
    • Replies: 3
    • Views: 4,660
    08-05-2008, 02:00 PM Go to last post
  22. Help needed in analyzing sequential data

    Hi! I hope for your advice and directions: I've data that codes a sequence of behaviors. Each sequences is of different lengths. I have 1400...

    Started by Sam31‎, 02-24-2015 02:47 AM
    • Replies: 0
    • Views: 1,049
    02-24-2015, 02:47 AM Go to last post
  23. Exclamation Help needed to check statistics in thesis

    I would really need someone to check my stats work for my thesis, as I am not entirely sure about what procedures I carried out. Quick overview of...

    Started by fran93‎, 06-20-2015 10:02 AM
    anova, experiment, likert items, statistics, t-test
    • Replies: 0
    • Views: 995
    06-20-2015, 10:02 AM Go to last post
  24. Help needed urgently - dichotomous question

    Hi everyone, I have the following answers to the survey question "are you a new client" (Yes/No). My sample is 1200 clients with 520 respondents....

    Started by hsaharmo‎, 07-27-2011 07:32 AM
    • Replies: 5
    • Views: 3,188
    07-28-2011, 07:54 AM Go to last post
  25. Question help needed urgently for my dissertation what analysis method do i use

    hi i urgently need some help to do results section of my dissertation as it due soon by early may what analysis do i use and how do i interpret...

    Started by psychelp‎, 04-24-2017 09:08 AM
    please help me on this
    • Replies: 0
    • Views: 626
    04-24-2017, 09:08 AM Go to last post
  26. Help needed with choice of appropriate method for repeated measures data

    Hello! I'm new on this forum and I'm desperately searching for advice on analyzing my data. I'm currently working on my master's thesis and I'm...

    Started by Elvin Roest‎, 08-02-2011 04:35 AM
    • Replies: 0
    • Views: 1,500
    08-02-2011, 04:35 AM Go to last post
  27. help needed with Fishers Exact Test (power calculation)

    Hello everyone. Hope someone can help me. I am running a Fisher exact 4 X 2 table analysis in SPSS. I have been informed its the correct test to...

    Started by ANCOVA'D‎, 05-25-2016 03:49 AM
    chi square, fishers exact, power analysis, power calculation
    • Replies: 0
    • Views: 726
    05-25-2016, 03:49 AM Go to last post
  28. Help needed with interpretation of a (clear) 2x3-ANOVA interaction

    Dear Stats community I hope someone can help me interpreting my results. I ran two tests, each with three participant groups. So I have a...

    Started by minimax‎, 03-08-2013 10:27 AM
    • Replies: 3
    • Views: 1,673
    03-27-2013, 08:33 AM Go to last post
  29. Help needed with Multiple Correspondence Analysis

    Greetings, I am looking for resources (books, websites, articles) that can help me, in the simplest way possible (i.e. step by step), figure out...

    Started by rhazlettknudsen‎, 07-05-2011 04:08 PM
    • Replies: 2
    • Views: 3,902
    07-05-2011, 06:54 PM Go to last post
  30. Question Help Needed! SOS! Survey Scale Development and Analysis Implication

    Hey everyone! I found this forum while looking for answers to my issues and thought I would open my issues up to fellow members and see if anyone has...

    Started by jlee13‎, 01-27-2012 12:58 AM
    • Replies: 0
    • Views: 1,361
    01-27-2012, 12:58 AM Go to last post
  31. Question Help Needed: How to assess heterogeneity/diversity of values in the group?

    Dear forum members, I am trying to come up (or to find an existing one) with a measure of how many different values the group of numbers has. ...

    Started by sigmund‎, 07-19-2013 12:45 PM
    • Replies: 0
    • Views: 980
    07-19-2013, 12:45 PM Go to last post
  32. Help on Factor analysis and Extension

    Hello frnds , Recently we had done a project on Factor analysis approach to understand the indian consumer behavior Our survey questioner...

    Started by amjath‎, 01-21-2009 05:08 PM
    • Replies: 8
    • Views: 5,227
    01-26-2009, 12:28 PM Go to last post
  33. help on statisitcal test to use

    Hi! In my research I am using a surrogate approach (number of surrogates=100) and I making a comparison among indeces (as correlation indeces...

    Started by netrunner‎, 08-18-2008 03:29 AM
    • Replies: 0
    • Views: 2,613
    08-18-2008, 03:29 AM Go to last post
  34. Help on which test to choose for paired samples?

    Hi there - I'm hoping to elicit help on which test to choose - Mann-Whitney vs Wilcoxin (signed rank or rank-sum)? I have paired water samples...

    Started by dougherl‎, 06-02-2015 08:31 PM
    • Replies: 2
    • Views: 1,150
    06-03-2015, 07:33 AM Go to last post
  35. Help Please - Multi-Dimensional Interpolation Analysis

    Hi all, I am currently working on a problem that involves a lot of statistics and probability. Unfortunately I have limit expertise in both these...

    Started by kevinbowe2000‎, 12-06-2013 12:47 PM
    • Replies: 0
    • Views: 847
    12-06-2013, 12:47 PM Go to last post
  36. Help please!

    Hi, im new to this forum and i am a psychology student who is in the middle of my dissertation and it has reached the point that i need to start my...

    Started by Ems86‎, 03-25-2009 03:16 PM
    • Replies: 1
    • Views: 1,627
    03-25-2009, 11:08 PM Go to last post
  37. Help requested for difficult data set

    Would really appreciate any insights, please. I administered a survey to 20 participants, consisting of 136 images, and I asked them to rate each...

    Started by Statisticallychallenged‎, 12-31-2010 03:32 PM
    • Replies: 0
    • Views: 1,991
    12-31-2010, 03:32 PM Go to last post
  38. Help to compute expected value of matrix product

    Hello, I have this problem to solve which is driving me crazy: I have the following matrices g = ' where .* here means Hadamard product and...

    Started by paolo72‎, 01-25-2012 05:56 AM
    • Replies: 0
    • Views: 3,323
    01-25-2012, 05:56 AM Go to last post
  39. Help understanding results of this radomized controlled trial.

    In the following published paper linked to below, could someone explain the meaning of this quote: Link to publication that the quote is from:...

    Started by 7055‎, 11-21-2015 05:44 PM
    • Replies: 2
    • Views: 1,330
    11-22-2015, 10:20 AM Go to last post
  40. Help understanding separate- and joint- factor analyses in CFA and ESEM

    Folks, I am reading an article that tested 2 models--one with an hypothesized separate-factor relationship between five pairs of personality...

    Started by barrygrant‎, 02-02-2017 01:24 PM
    cfa, esem, factor analysis
    • Replies: 2
    • Views: 2,117
    02-03-2017, 10:43 AM Go to last post
  41. Help w/survey results!

    I am hoping someone can help me figure out how to do the following: I am a member of my child's school's accountability committee, and as such we...

    Started by astro_girl‎, 04-07-2011 07:18 PM
    • Replies: 4
    • Views: 3,520
    04-08-2011, 04:05 PM Go to last post
  42. Help with a Poisson Regression Equation

    I have attached an image of an equation of Poisson Regression that i am working on. I want to understand it a bit as i am new to stats. can anyone...

    Started by rushan‎, 04-08-2015 05:37 AM
    • Replies: 1
    • Views: 1,019
    04-09-2015, 11:13 AM Go to last post
  43. Help with analysing data

    I have submitted a questionnaire indicating respondants to give their ranking in accordance to their preferred weighting - for example if they gave...

    Started by maltesedog‎, 12-03-2008 03:19 AM
    • Replies: 2
    • Views: 2,442
    12-03-2008, 08:12 AM Go to last post
  44. Help with analysis

    Hi All, I am new to the forum. I have a specific question regarding one of the behavioral experiment we are conducting. This experiment is...

    Started by bluray‎, 02-12-2012 11:30 AM
    • Replies: 0
    • Views: 1,449
    02-12-2012, 11:30 AM Go to last post
  45. Unhappy help with analysis

    I conducted a study in which I examined the same subjects in two different modes - day and night. The tests were given in the two situations are the...

    Started by shirlyka‎, 10-08-2013 09:27 AM
    spss, spss test
    • Replies: 0
    • Views: 1,152
    10-08-2013, 09:27 AM Go to last post
  46. Lightbulb Help with attribution/causality

    Hello everyone! I am new to this forum, but excited to become more involved :tup: I am currently a mathematics/statistics student and I am looking...

    Started by JesusWalks‎, 08-03-2011 12:49 PM
    attribution, causality, ecological statistics, model, statistics
    • Replies: 1
    • Views: 2,762
    08-04-2011, 05:23 PM Go to last post
  47. Help with bimodal distribution

    I have a bimodal distribution which I think is made up of 2 normal distributions. How can I tell the 2 distributions apart? In other words I would...

    Started by mousme‎, 11-26-2009 09:03 AM
    • Replies: 0
    • Views: 4,154
    11-26-2009, 09:03 AM Go to last post
  48. Help with Binomial Distribution Comparison

    I have a set of two binomial distributions (0's and 1's) of about 1000 observations each and I want to compare them. I have considered using a...

    Started by neutrality‎, 09-09-2013 01:02 AM
    • Replies: 0
    • Views: 1,165
    09-09-2013, 01:02 AM Go to last post
  49. Help with choice of nonparametric?

    Hello, I have a very small sample, n=6 for an exploratory pilot study. I want to correlate the variables i have to see if there are any...

    Started by Confused_Claire‎, 11-06-2010 08:33 AM
    • Replies: 2
    • Views: 2,510
    11-07-2010, 02:57 AM Go to last post
  50. Help with choosing right statisical method.

    Hi I am new at statistic and am writing my bachelor thesis. I am not really sure how to interpret the statistical significance of my final...

    Started by metlou‎, 05-29-2013 06:39 AM
    elisa
    • Replies: 3
    • Views: 1,475
    06-03-2013, 12:29 PM Go to last post
  51. Help with choosing statistics

    Hi! Stumbled over this forum recently, there's so much knowledge here I could just sit and read and read. Anyway, I'm not the strongest in stats so I...

    Started by Dave4‎, 08-29-2011 10:43 PM
    2 Pages
    1 2
    • Replies: 22
    • Views: 4,528
    11-22-2011, 12:09 AM Go to last post
  52. Help with comparing variability of 3 variables on different scales

    Hi, I have 3 socioeconomic variables on different scales (yearly income, job category, and years of education) and I'm interested in determining...

    Started by Karissa‎, 10-05-2013 04:02 PM
    • Replies: 0
    • Views: 2,832
    10-05-2013, 04:02 PM Go to last post
  53. Help with comparing very small proportions

    I have a problem with comparing some proportions. I am looking at interactions between sequences in a genome and I want to compare the numbers of...

    Started by mousme‎, 05-02-2012 03:45 AM
    • Replies: 0
    • Views: 1,379
    05-02-2012, 03:45 AM Go to last post
  54. Help with confirming what I can and cannot conclude from this regression output

    This study tried to determine the factors influencing the probability that voters would be asked to show ID in order to vote in a certain state...

    Started by Harry717‎, 02-18-2017 12:14 PM
    • Replies: 1
    • Views: 1,465
    02-19-2017, 04:55 PM Go to last post
  55. Help with correct statistical test please

    Hi everyone. I am a novice at statistical tests, as such I need urgent help in determining what type of statistical test to use in hypothesis testing...

    Started by oludot5‎, 03-03-2015 05:20 AM
    • Replies: 1
    • Views: 1,397
    03-03-2015, 05:28 AM Go to last post
  56. Help with Customer Satisfaction data analysis (Correlation/ANOVA)

    I'm working on an analysis of a customer satisfaction survey, where I'm trying analyze the link between respondent's stated likelihood to recommend...

    Started by mpschulm‎, 11-11-2012 09:03 PM
    anova, correlation, customer satisfaction, net promoter score
    • Replies: 1
    • Views: 3,249
    11-12-2012, 09:19 AM Go to last post
  57. Help with data!!!

    Hi, I am new to the forum and would massively appreciate some help with some research I am doing. I am looking at a series of students marks over...

    Started by Milly‎, 01-21-2012 02:49 PM
    • Replies: 2
    • Views: 1,405
    01-21-2012, 06:52 PM Go to last post
  58. Help with deciding upon a test

    Usually I'm pretty good with figuring out what test to use but this has me puzzled: I'm more familiar with the ANOVA camp than the regression camp...

    Started by trinker‎, 04-25-2011 10:32 PM
    • Replies: 2
    • Views: 1,611
    04-26-2011, 12:13 AM Go to last post
  59. 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: 2,733
    03-19-2011, 09:58 AM Go to last post
  60. Unhappy Help with Dissertation Survey Data Input in SPSS

    Hi all, I was looking for some help with inputting the data from my survey's into SPSS for analysis. I've conducted a survey on Internet Banking...

    Started by AJV171‎, 03-16-2013 08:06 AM
    • Replies: 0
    • Views: 1,281
    03-16-2013, 08:06 AM Go to last post

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