1. Announcement:
    Want access to a chatbox?
    Dason ‎(Devorador de queso)
    05-10-2017
    Views:
    1,777
+ Post New Thread
Page 8 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 ... LastLast
Threads 421 to 480 of 3192

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: 18,620
    10-11-2014, 12:02 PM Go to last post
  1. Test for difference between ratio of means, unequal variance.

    Hello there, I an experimental design were I wish to test if the effect of a treatment on several subjects type is different to the effect of...

    Started by Sudders‎, 04-05-2011 04:01 PM
    • Replies: 5
    • Views: 6,199
    09-29-2015, 11:58 PM Go to last post
  2. Question Non normal likert scale Data?

    Hello all, I have a problem with stats procedures for a research paper. I have a sample size of 379 respondents with data collected with a 5...

    Started by Tai‎, 03-29-2012 03:42 AM
    • Replies: 5
    • Views: 10,280
    11-12-2012, 04:03 AM Go to last post
  3. Problem fitting an SEM with latent variable

    Hello, I am having trouble with a Structural Equation Model. As you can see in the attached picture, my main outcome variable (F4) is a latent...

    Started by jesse‎, 07-30-2012 12:24 AM
    • Replies: 5
    • Views: 2,274
    07-31-2012, 11:31 AM Go to last post
  4. Simple question

    Hello everyone.. This is my first post here, and I really think it's a great idea to have such forum.. Anyway, I have a simple question I...

    Started by Isra'a‎, 07-31-2012 06:58 PM
    • Replies: 5
    • Views: 2,031
    08-02-2012, 05:22 PM Go to last post
  5. Is a z-transformation appropriate in this case?

    Hi everyone :-) n=150 Everyone gets a test with 14 items and a variable "score" is calculated from the responses. Trouble is, 50 of my tests...

    Started by thegermanguy‎, 08-23-2012 01:48 PM
    • Replies: 5
    • Views: 1,770
    08-24-2012, 08:45 AM Go to last post
  6. Using Mann-Whitney test when all values in one data set are zero (SPSS vs Graphpad)

    I would be very grateful for advice on the following problem: I am examining the frequency in which political issues are reported in the national...

    Started by sunilaup‎, 08-27-2012 02:38 PM
    • Replies: 5
    • Views: 2,673
    08-29-2012, 03:50 AM Go to last post
  7. Cca

    Hello In CCA is it a must that the number of IV's to be less than or equal the number of DV's,i mean are there any assumptions or conditions about...

    Started by osamahamza‎, 09-26-2012 02:53 AM
    • Replies: 5
    • Views: 2,006
    09-30-2012, 02:32 AM Go to last post
  8. Paired t-test is significant and ANOVA is not, on what should I rely?

    Hello.. I have a question I hope someone can help me with. In my study, I have to groups; treatment group and a control (placebo) group, and I...

    Started by Isra'a‎, 11-10-2012 05:46 PM
    • Replies: 5
    • Views: 1,899
    11-11-2012, 10:05 AM Go to last post
  9. Wich data analysis to choose for my data?!

    Hello to everyone, I'm new on this forum and I thank the team for this site. Actually I'm working with some data and I don't know which can be the...

    Started by tsdl‎, 11-09-2012 07:47 PM
    • Replies: 5
    • Views: 1,761
    11-13-2012, 09:40 AM Go to last post
  10. Customer satisfaction survey (data analysis)

    Hi, We are doing a customer satisfaction survey on our school canteen. We are finished with the data collection and is now considering what...

    Started by lassekk‎, 11-27-2012 05:33 AM
    • Replies: 5
    • Views: 3,173
    11-28-2012, 02:13 AM Go to last post
  11. multivariate logistic regression

    I want to do multivariate logistic regression. Does it mean "one logistic regression with 2 dependent variables at the same time? Or Does it mean...

    Started by eunkum‎, 04-18-2013 12:02 PM
    • Replies: 5
    • Views: 3,237
    06-16-2013, 01:46 PM Go to last post
  12. statistical analysis- ANOVA, t test, questionnaire

    Hi all, I am doing a mini research in HCI filed which examine the differences between pen touch and finger touch on specific Smartphone. I have...

    Started by hila‎, 02-02-2013 10:49 AM
    • Replies: 5
    • Views: 3,369
    02-04-2013, 04:44 PM Go to last post
  13. non-parametric t-test with mean/SD = 0

    Hi All, quick question on non-parametric t-test I have 2 groups. 7 values each. Group One= 0, 0, 0, 0, 0, 0, 0 which of course is mean=0 and...

    Started by Misagh‎, 02-04-2013 04:20 PM
    non-parametric, sem
    • Replies: 5
    • Views: 3,517
    02-05-2013, 11:24 PM Go to last post
  14. ANOVA help? :)

    Basically i have two sets of data collected from two different locations. I know that both sets of data are not normally distributed, so they will...

    Started by EmmaWP‎, 02-13-2013 05:11 PM
    • Replies: 5
    • Views: 1,115
    02-13-2013, 05:32 PM Go to last post
  15. pair-wise comparison using contrasts

    I asked this question months ago, and did not get a response. So hopefully, someone can help me out here. Here, I am running a 2way repeated...

    Started by thecupofcoffee‎, 05-14-2013 02:01 AM
    • Replies: 5
    • Views: 1,423
    05-15-2013, 11:54 PM Go to last post
  16. Writing equations for latent growth curve models

    Hi all, I'm a PhD student currently working on an independent research project using latent growth curve modeling. This is my first time using...

    Started by omnibus‎, 05-31-2013 02:01 PM
    equation query, latent growth curve, longitudinal data, parallel process model
    • Replies: 5
    • Views: 2,079
    06-01-2013, 02:11 PM Go to last post
  17. How to test this mix of continuous and categorical data?

    Hello all. I'm working on this project and have the following variables: x (categorical, independent) y (continuous,independent) z...

    Started by KevinP‎, 07-02-2013 08:02 PM
    • Replies: 5
    • Views: 1,143
    07-02-2013, 08:56 PM Go to last post
  18. Logistic regresion with only discrete IV

    Hi, I saw a few binary logistic regressions in Minitab where we did not have any continuous variables and the analysis Minitab gave was simply the...

    Started by rogojel‎, 08-02-2013 06:48 AM
    • Replies: 5
    • Views: 3,601
    08-03-2013, 02:29 PM Go to last post
  19. Permanova design for BACI study (using Primer)

    my first question here! i need to do a few analyses on a biological dataset, and I am a bit puzzled about how to set my Permanova design. I use...

    Started by doddel‎, 08-01-2013 08:25 AM
    • Replies: 5
    • Views: 3,150
    08-09-2013, 03:51 AM Go to last post
  20. T-Test vs. Mann-Whitney U Test for ordinal data

    Hello all: Something at work made me wonder about this situation and I thought I'd ask here just to get some opinions. Imagine people were...

    Started by lancearmstrong1313‎, 08-20-2013 02:05 PM
    • Replies: 5
    • Views: 17,782
    08-21-2013, 05:29 AM Go to last post
  21. Question Sturges' Formula

    How can I prove Sturges' formula for determining number of classes in frequency distribution? k=Log2n+1 (n=number of data, k=number of classes)

    Started by masumeh‎, 09-27-2013 09:31 AM
    • Replies: 5
    • Views: 30,696
    09-27-2013, 12:01 PM Go to last post
  22. Permanova significant four fold interaction. How about 2 and 3 fold interactions?

    Dear, I have a problem considering the analysis of a design with 4 factors. I have a fully crossed design with 4 factors (Su,Sp,Sa,Te). When...

    Started by mrtwino‎, 09-26-2013 06:07 AM
    • Replies: 5
    • Views: 1,707
    09-26-2013, 06:09 PM Go to last post
  23. geometric argument for constraints on r_xz given r_xy and r_yz

    Today a labmate asked the following question: if we have three random variables x, y, z, and we know the correlations r_{xy} and r_{yz}, what...

    Started by Jake‎, 09-17-2013 01:17 AM
    • Replies: 5
    • Views: 4,021
    05-18-2015, 04:16 PM Go to last post
  24. A simple case that doesn't seem that simple

    I've been trying to find the best solution for my experiment. I don't like that much what my colleagues are using for the statistic test here. So I...

    Started by srd‎, 11-25-2013 06:43 AM
    • Replies: 5
    • Views: 2,068
    12-02-2013, 10:34 AM Go to last post
  25. question on Monte Carlo simulation

    I have a mean (mu) and its standard error (se) of variable X from the literature. I have a dataset of size n which doesn't have variable X. Now I...

    Started by sunny3333‎, 11-25-2013 03:35 PM
    • Replies: 5
    • Views: 1,910
    11-27-2013, 08:17 AM Go to last post
  26. No Standard Deviation

    Hello statistical geniuses, I have 450 items and I want to test a sample and be sure with 95% confidence that if all of my tested items are...

    Started by DAD‎, 01-13-2014 12:04 PM
    • Replies: 5
    • Views: 1,796
    01-13-2014, 04:00 PM Go to last post
  27. What to do if sample size is too big? (ttest)

    So I'm running ttests for a descriptive statistic table and all my results are significant, but I"m concerned that the sample size is too big 3,880...

    Started by vikingo‎, 01-23-2014 11:23 AM
    large sample size, power, pplot, sample size, ttest
    • Replies: 5
    • Views: 6,062
    02-01-2014, 05:47 PM Go to last post
  28. Pearson or Spearman?

    Hello all I know you're supposed to observe a scatterplot first in order to see if the shape is monotonic or linear to determine which test to...

    Started by gene2420‎, 02-18-2014 12:24 PM
    • Replies: 5
    • Views: 1,692
    02-24-2014, 03:06 PM Go to last post
  29. Basic question on Spearman's correlation coefficient

    Hey guys, If I understand correctly, when calculating Spearman's correlation coefficient you just rank your variables, and then calculate...

    Started by Hombre‎, 02-24-2014 11:05 AM
    • Replies: 5
    • Views: 1,272
    02-24-2014, 01:37 PM Go to last post
  30. Two IV's (Nominal, both multi-level), One DV (Interval). What do I run????

    Help needed, I am trying to escape ABD hell. I am only a couple of statistical procedures away from slaying the dissertation beast and have hit a...

    Started by jhayes‎, 02-20-2014 04:28 PM
    dependent variables, independent variables, multi level
    • Replies: 5
    • Views: 2,206
    02-27-2014, 03:15 PM Go to last post
  31. Post Correlation coefficient repeated measures

    Hi Everyone, I would like to measure the correlation between two quantitative variables. These variables measure the same thing but are obtained...

    Started by AkaKiwi‎, 03-23-2014 06:30 AM
    • Replies: 5
    • Views: 2,920
    03-26-2014, 04:17 AM Go to last post
  32. structuring a proof

    I am working on a problem to show that the non central f distribution is a generalization of the f distribution. I understand this conceptually but...

    Started by the42up‎, 04-08-2014 09:44 AM
    • Replies: 5
    • Views: 1,686
    04-08-2014, 10:12 AM Go to last post
  33. What does component signifies in Principal component analysis?

    Structure Matrix ......................................Component ...................................1 ..... 2 .....3 ......4 ...

    Started by rahul_panthri‎, 04-29-2014 06:35 AM
    • Replies: 5
    • Views: 1,396
    04-29-2014, 08:43 AM Go to last post
  34. Conditional expectation

    Hi everyone, I've usually seen the conditional mean of X_n given X_1,X_2,.X_n-1 expressed as shown on p. 5 of: ...

    Started by CLP_PS‎, 06-06-2014 02:07 PM
    • Replies: 5
    • Views: 2,493
    06-10-2014, 12:37 AM Go to last post
  35. Bayes statistics - sensitivity to priors

    Hi, I came across a statement in a review of a research field, where they were determining an unknown parameter using Bayesian statistics. The...

    Started by rogojel‎, 06-19-2014 06:51 AM
    bayes, prior probabilities, sensitivity
    • Replies: 5
    • Views: 2,144
    06-22-2014, 01:53 AM Go to last post
  36. Effect size for small non-parametric data

    Hi Guys, I would like to run a effect size test for a very small non-parametric analysis (n=4 per group), which one is the most recommended test?...

    Started by fabinha‎, 06-23-2014 09:13 PM
    • Replies: 5
    • Views: 3,089
    06-30-2014, 06:25 PM Go to last post
  37. Can you assign new observations into existing clusters?

    Have never done cluster analysis. Is a scenario like this possible/recommended... 1. Run 100 observations thru cluster analysis and end up with 4...

    Started by jawon‎, 07-01-2014 04:37 PM
    • Replies: 5
    • Views: 3,787
    07-07-2014, 03:45 PM Go to last post
  38. Is there a test...

    Hi there! I have a new work project and I'm finding it challenging to select the approriate test. I'm not even sure if the right test exists so...

    Started by danib‎, 07-23-2014 03:04 PM
    • Replies: 5
    • Views: 1,809
    07-23-2014, 10:54 PM Go to last post
  39. factor analysis

    Can I do a factor analysis with one dependent variable and one independent variable? Do I need to have at least two dependent variables to do a...

    Started by eunkum1‎, 07-28-2014 02:23 PM
    • Replies: 5
    • Views: 1,170
    07-29-2014, 09:02 AM Go to last post
  40. State the null and alternative hypothesis

    Dear all, Can someone please give me some advise on this one? I need to state the Ho en Ha hypothesis, I know how to do it in words but not in the...

    Started by Micheller‎, 11-12-2014 12:49 PM
    • Replies: 5
    • Views: 4,527
    11-16-2014, 01:09 PM Go to last post
  41. Sample size help!!

    Hello! New to the forum but would greatly appreciate any help people may have to offer... Essentially I am trying to organise a scientific study...

    Started by aglove‎, 11-13-2014 03:23 PM
    • Replies: 5
    • Views: 2,813
    11-17-2014, 03:53 PM Go to last post
  42. Post Which analysis i should use to test/support hypothsis ?

    Hello Can someone tell me which type of analysis I should use to test hypothesis ? Which analysis best show me measure between 2 constructs ?

    Started by hanialbarni‎, 12-01-2014 08:14 AM
    • Replies: 5
    • Views: 1,814
    12-01-2014, 11:49 PM Go to last post
  43. Lightbulb Accept Null hypothesis VS Reject Null hypothesis ?

    Hello Good evening everyone, I read about this for testing my hypothesis but still confusing me this accept/reject null hypothesis can...

    Started by hanialbarni‎, 12-02-2014 03:13 PM
    • Replies: 5
    • Views: 4,035
    12-03-2014, 05:38 AM Go to last post
  44. Post How to transform non-normal variable to normal distrubtion ?

    Hello Good morning, Can you please give me a way to transform non-normal variable in SPSS to normal distributions? We try LG10(DATA) as...

    Started by hanialbarni‎, 12-05-2014 07:36 AM
    • Replies: 5
    • Views: 2,238
    12-06-2014, 11:01 AM Go to last post
  45. Over-simple Stats?

    Hi all, This should hopefully be a really simple question but I think I am confusing myself over a throwaway comment that someone made.... Say...

    Started by smcdougall‎, 01-14-2015 11:35 AM
    hierarchical, multi level
    • Replies: 5
    • Views: 1,449
    01-15-2015, 09:16 AM Go to last post
  46. GIS data questions

    Hi All, I have to get some GIS data for a project I am working on but I honestly have no idea where to start. What I need is as follows: 1. I...

    Started by Lazar‎, 06-17-2015 08:09 PM
    gis
    • Replies: 5
    • Views: 1,051
    06-18-2015, 11:21 AM Go to last post
  47. post-hoc for nonparametric paired data in groups of unequal sizes

    I am trying to do post-hoc analysis for nonparametric data. The group sizes are unequal but are paired. I've found several tests online,...

    Started by skylandyu‎, 07-21-2015 01:54 PM
    • Replies: 5
    • Views: 2,294
    07-22-2015, 09:54 AM Go to last post
  48. advice on how to proceed

    Hello, I recently undertook to analyze a relatively simple data set. It includes estimates of tree species composition for several sites within...

    Started by wdmn‎, 11-07-2015 12:11 AM
    • Replies: 5
    • Views: 1,805
    11-10-2015, 12:37 PM Go to last post
  49. paired samples

    Hello! I have two separate group. On each group, I could have done paired samples t-test, but I want to compare between the two of them- is there...

    Started by talgef‎, 12-21-2015 06:56 AM
    • Replies: 5
    • Views: 1,570
    12-21-2015, 01:06 PM Go to last post
  50. probability formula

    Hello, I would like to know the formula that would allow me to do the following; Assume; 1. 200 total events occur in 100 days (ie; 2 events per...

    Started by FrankStats‎, 01-15-2016 03:11 PM
    formula, probaility
    • Replies: 5
    • Views: 1,372
    01-16-2016, 02:47 PM Go to last post
  51. Anova

    I am trying to find the effects of feed rate, cutting speed and depth of cut on surface roughness. I have five sets of feed rate ( 0.09, 0.10, 0.125,...

    Started by saad2733‎, 02-28-2016 01:42 PM
    anova, minitab
    • Replies: 5
    • Views: 2,545
    02-29-2016, 06:07 AM Go to last post
  52. Models comparison

    I have a time series data of 1000 points for each of the different machines. I tried different forecasting techniques to make a one step prediction....

    Started by Mukund‎, 03-14-2016 12:40 PM
    models comparison
    • Replies: 5
    • Views: 1,852
    03-15-2016, 06:44 AM Go to last post
  53. Which Non-parametric Significance Test Should I Use?

    Hi, I've been working on a little project. Last year I delivered pizzas. I recorded data for 300 of my deliveries like tip amounts, order totals,...

    Started by 13gentj‎, 06-07-2016 08:36 PM
    exact test, fail assumptions, non-normal, permutation test, randomization test
    • Replies: 5
    • Views: 2,039
    06-09-2016, 02:34 AM Go to last post
  54. Dealing with missing values in cluster analysis

    I am currently looking for a cluster algorithm to deal with a large amount of systematically missing values. In particular, I need to cluster...

    Started by fabiangmueller‎, 07-15-2016 05:04 PM
    • Replies: 5
    • Views: 1,146
    07-16-2016, 06:53 AM Go to last post
  55. Can I use gls if I don't need to use mixed models and var is not structured?

    I have a continuous variable that is related to a covariable linearly. I need to compare this relationship between months (24 months), but the...

    Started by mgow‎, 09-14-2016 08:17 AM
    generalised least squares, heteroscedasticity, independent observations, nlme
    • Replies: 5
    • Views: 1,750
    09-14-2016, 04:01 PM Go to last post
  56. Item Response Question

    I have received some survey data for 200 respondents. DV: Binary (20=1; 180=0) 20 IVs, Likert 5-point scale and currently treated as...

    Started by hlsmith‎, 11-10-2016 09:12 AM
    • Replies: 5
    • Views: 2,608
    11-14-2016, 03:21 AM Go to last post
  57. Propensity score matching - pre-treatment outcome variable

    Hi all, maybe this rather a silly question but I have not found anything helpful. I have two groups of samples which are basically a treatment and...

    Started by Chickencheese‎, 11-19-2016 08:14 AM
    control, matching, propensity score matching
    • Replies: 5
    • Views: 3,535
    12-05-2016, 03:20 PM Go to last post
  58. What kind of tests i can do to see if two diseases are related

    I am using data from this website (data is at the bottom of the page) for a case-study. For the sake of question lets stick to any of FluWatch sheet...

    Started by x509‎, 11-22-2016 11:04 AM
    • Replies: 5
    • Views: 3,129
    11-22-2016, 02:02 PM Go to last post
  59. Maximum number of groups in Kruskal Wallis one-way analysis of variance

    Is there a maximum number of groups in Kruskal Wallis' one-way ANOVA? I am looking at a data set with 42 separate groups and I am unsure if there...

    Started by feignfeign‎, 01-09-2017 11:02 PM
    • Replies: 5
    • Views: 2,832
    01-12-2017, 07:14 PM Go to last post
  60. Interpreting the interaction effect in a well known paper

    Attached you will find a well known research paper. If you go to page 438 (page 9 of the pdf file) you will find a model where: change in tax rate...

    Started by 12345678‎, 12-30-2016 04:25 PM
    • Replies: 5
    • Views: 3,899
    01-01-2017, 01:40 PM Go to last post

+ Post New Thread
Page 8 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 ... 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