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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. How do i create "nice" prediction hyperbola?

    I would like to create a nice prediction hyperbola in my regression analysis, at this moment i am only getting some rather ugly ones and only where i...

    Started by thedreamshaper‎, 09-16-2010 02:28 PM
    • Replies: 3
    • Views: 3,535
    09-16-2010, 03:55 PM Go to last post
  2. binary independent and binary dependent variables

    Hi all, Is it possible to run a regression with binary independent variables and binary dependent variables. i.e 0 & 1 value ind variables and 0...

    Started by Windows7‎, 02-20-2013 10:19 PM
    • Replies: 8
    • Views: 3,534
    02-21-2013, 12:44 AM Go to last post
  3. What to do with very low Durbin-Watson?

    For 100 companies, I have collected (i) `tweets` and (ii) corporate website `pageviews` for `148` days. The tweetvolume and pageviews per day are two...

    Started by reveller‎, 08-06-2012 06:16 AM
    autocorellation, durbin-watson, residuals, spss
    • Replies: 0
    • Views: 3,529
    08-06-2012, 06:16 AM Go to last post
  4. Multiple Regression Analysis

    Hi there, i would need some advice with regards to Multiple regression. Hopefully i have done the analysis in SPSS correctly. I would like to...

    Started by cookies8‎, 10-08-2006 04:08 AM
    • Replies: 1
    • Views: 3,526
    10-08-2006, 05:46 PM Go to last post
  5. Linear regression vs ancova - when to use which

    Hi all, I have some data on species richness, latitude and temperature. In the past on this sort of data I have used multi-linear regression. But it...

    Started by mikeywillcox‎, 03-29-2012 06:59 PM
    • Replies: 1
    • Views: 3,526
    03-29-2012, 07:11 PM Go to last post
  6. How to find beta in a regression model?

    Dear all, This might be a silly question, however I am a newbie when it comes to Stats. Im currently writing my thesis and for this I am analysing...

    Started by crazyaboutstats‎, 01-26-2014 05:03 PM
    • Replies: 11
    • Views: 3,525
    01-28-2014, 01:07 PM Go to last post
  7. How to test INTERACTION

    HI THERE, I have started recently using the multiple regression, I am runing now a model where I have 2 continous independent variables, and 4...

    Started by Avatar‎, 05-14-2010 05:28 PM
    • Replies: 3
    • Views: 3,520
    05-15-2010, 09:22 PM Go to last post
  8. Growth Rates

    I have a huge panel data set consisting of thousands of firms for a time period of 8 years. I would like to transform some of my variables. For...

    Started by Statanoob‎, 12-08-2010 01:28 PM
    • Replies: 2
    • Views: 3,514
    12-09-2010, 05:39 AM Go to last post
  9. xtlogit coefficient interpretations

    I'm working on a project where I am using a logit model in the program Stata. I'm using the xtlogit command with panel data for city and years. My...

    Started by ohjosr‎, 03-17-2012 01:46 PM
    • Replies: 0
    • Views: 3,511
    03-17-2012, 01:46 PM Go to last post
  10. Regression more than two Y variables

    Hi, sorry this is probably a very stupid question! I'm just trying to finish m thesis proposal and have just realised that my statistics are wrong. I...

    Started by cheesefeind‎, 02-04-2013 11:36 AM
    • Replies: 5
    • Views: 3,509
    02-04-2013, 02:12 PM Go to last post
  11. Heteroskedasticity? Residuals decreases with predicted values

    Hi, really need any help on this: As shown in my residual plot, the residuals is decreasing linearly with predicted values. What kind of...

    Started by pinkpeace7‎, 09-02-2013 03:27 AM
    • Replies: 13
    • Views: 3,507
    09-04-2013, 05:29 PM Go to last post
  12. Post What does R, R square , Adjusted R square, STD error of estimates helps for ?

    Hello After I run out the regression analysis, can someone enlighten me what can I get from R, R square, STD Error estimates and the adjusted r...

    Started by hanialbarni‎, 12-06-2014 11:05 AM
    • Replies: 9
    • Views: 3,506
    12-08-2014, 06:40 PM Go to last post
  13. How to interpret parameter estimates

    Hi, I have some output here from R, it contains the parameter estimates, the standard deviation of these estimates, the z value, the...

    Started by gino492‎, 11-15-2012 05:54 PM
    • Replies: 1
    • Views: 3,497
    11-15-2012, 05:58 PM Go to last post
  14. Logistic Regression Problem - HELP!

    A local health clinic sent fliers to its clients to encourage everyone, but especially older persons at high risk of complications, to get a flue...

    Started by aweimer‎, 05-15-2013 04:53 PM
    odds, regression analysis
    • Replies: 6
    • Views: 3,497
    05-16-2013, 09:39 AM Go to last post
  15. Dealing with outliers

    We have this discussion from time to time, but it has become more pertinant to me now... Before I begin I should note that I am not really interested...

    Started by noetsi‎, 12-30-2014 10:09 AM
    • Replies: 7
    • Views: 3,496
    12-30-2014, 10:16 PM Go to last post
  16. In stepwise regression, can the number of predictors be >n?

    Hi, I'm getting an error when I try to run a stepwise regression with backward elimination - it says there is not enough data in the columns. I...

    Started by l3a9k‎, 06-09-2011 08:35 AM
    • Replies: 7
    • Views: 3,495
    06-14-2011, 07:54 AM Go to last post
  17. Question on Finding the Design Matrix

    For the above question, I was wondering if someone could help me find the design amtrix in question a) It seems like from the question tat there...

    Started by chrishello‎, 09-18-2012 08:05 AM
    • Replies: 9
    • Views: 3,495
    09-18-2012, 10:49 AM Go to last post
  18. Strange results for logistic regression analysis

    Hi there, I'm having a problem for a while now, and I've asked several people who studied statistics specifically but they are not able to explain...

    Started by bramv‎, 03-08-2013 05:41 AM
    • Replies: 14
    • Views: 3,492
    04-03-2013, 12:20 PM Go to last post
  19. Regression Methods

    Hello, I have 1 dependent variable and 30 independent variables. I used forward method for selecting the important variables. The Adjusted R square...

    Started by Bahareh‎, 11-01-2013 03:01 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 3,487
    11-07-2013, 04:59 PM Go to last post
  20. Panel: Interaction and centering

    Hi guys, I have a panel where I want to run a fixed effects regression with an interaction term. The problem is that one factor of the term is...

    Started by Nardo‎, 11-01-2010 08:12 AM
    • Replies: 0
    • Views: 3,483
    11-01-2010, 08:12 AM Go to last post
  21. Regression with arctan function

    Hello, I am currently working on a prepayment model for mortgage loans. For this I'd like to use a modified version of the Richard & Roll model....

    Started by fanusi‎, 03-28-2013 05:01 AM
    • Replies: 0
    • Views: 3,482
    03-28-2013, 05:01 AM Go to last post
  22. Co-efficient interpretation in Gamma Regression Model

    Hi Guys, I am trying to fit a gamma regression model using a log link model. Now, I get a negative co-efficient for one of my IVs. What is the...

    Started by Ancalagon The Black‎, 07-06-2011 01:49 PM
    gamma regression, glm, regression
    • Replies: 0
    • Views: 3,477
    07-06-2011, 01:49 PM Go to last post
  23. regression analysis with non normal residuals

    I am a relative novice at stats so I would appreciate any help on this. Please let me know if I need to provide any more info to answer the question....

    Started by crispin‎, 03-04-2011 09:55 AM
    • Replies: 0
    • Views: 3,476
    03-04-2011, 09:55 AM Go to last post
  24. Report Interaction Term Coefficients, SE, t, p, as well as the interaction?

    A bit of a basic question: I ran regression analyses to test moderating effects of gender and stress on anxiety. So, DV: Anxiety. IVs:...

    Started by statn00b‎, 01-20-2012 12:15 AM
    • Replies: 4
    • Views: 3,475
    01-23-2012, 05:01 AM Go to last post
  25. Cook's distance for nonlinear regression

    Cook's distance was used to detect outliers in a linear regression model. But is it ok to use it with non-linear regression model?

    Started by khara‎, 02-17-2013 06:58 PM
    • Replies: 0
    • Views: 3,470
    02-17-2013, 06:58 PM Go to last post
  26. Time-series analysis with three variables

    :wave:I have some time-series across three variables. I want to see the association of two variables while controlling for a third. I am using SPSS...

    Started by jimd@uic.edu‎, 10-13-2009 08:26 AM
    • Replies: 0
    • Views: 3,469
    10-13-2009, 08:26 AM Go to last post
  27. 2SLS - endogeneity issue

    I am running a regression on the relationship between aid inflows and investment levels in developing countries. One obvious other explanatory...

    Started by Alex E‎, 05-01-2006 09:37 AM
    • Replies: 1
    • Views: 3,464
    05-06-2006, 01:40 PM Go to last post
  28. Regression with only positive values

    Hi, I'm new and I don't have much mathematical knowledge, just the basis. I have 13 independent variables, and I'm trying to know how much each of...

    Started by Paul_‎, 01-02-2013 07:57 PM
    • Replies: 5
    • Views: 3,457
    01-08-2013, 05:07 PM Go to last post
  29. Checking assumptions for interaction terms? too confusing.. please help.

    I am checking assumptions and outliers before running moderated regression analysis. I wonder if I should check normality, linearity, and equal...

    Started by Ilikespring‎, 10-18-2013 11:40 PM
    • Replies: 3
    • Views: 3,455
    10-19-2013, 05:21 PM Go to last post
  30. How to Compare B Coefficients within and between models in R?

    Hello people, I am new to this forum and it would be great if some experienced people could help met out. I would like to know what the...

    Started by KevinAdam‎, 12-24-2016 05:00 PM
    • Replies: 1
    • Views: 3,455
    12-25-2016, 04:16 AM Go to last post
  31. Z-test in NB regression model

    what is the null hypothesis of z-test in negative binomial regression?

    Started by najmehjami‎, 06-12-2011 04:55 PM
    • Replies: 4
    • Views: 3,454
    06-15-2011, 10:54 AM Go to last post
  32. Regression models with pre and post tests

    I'd like to use a path analysis for N=37 with three exo. variables, i.e., R, M, S? I don't use a latent variable in my model, and wonder if the N>200...

    Started by Sencer Corlu‎, 07-02-2011 05:48 AM
    • Replies: 0
    • Views: 3,446
    07-02-2011, 05:48 AM Go to last post
  33. Multiple Moderated Regression Help!

    Hi folks, i need help regarding multiple moderated regresison analysis in SPSS. I have one independent variable (X), one Dependent variable (Y)...

    Started by nouman‎, 08-26-2011 02:41 PM
    moderated multiple regres
    • Replies: 3
    • Views: 3,442
    08-27-2011, 09:42 AM Go to last post
  34. Multiple Regression in Matlab

    Good afternoon, I have a little problem in matlab using the regstats function. I have four matrices with information. Let's name them A, B, C and...

    Started by Denniono‎, 08-13-2013 10:50 AM
    • Replies: 0
    • Views: 3,442
    08-13-2013, 10:50 AM Go to last post
  35. Multiple DVs

    Hey all, I've been tasked with determining the "best" IV (various demographics) for predicting overall purchase behavior, as determined by...

    Started by justcallmeerik‎, 06-07-2010 03:38 PM
    • Replies: 1
    • Views: 3,435
    06-12-2010, 12:50 AM Go to last post
  36. how many time dummies in pooled regression?

    Hi guys, I want to perform a cross sectional time series regression - fixed effects model. Am I correct that it is better to group time by time...

    Started by SylviaS‎, 02-23-2012 08:44 AM
    • Replies: 2
    • Views: 3,434
    02-26-2012, 06:43 PM Go to last post
  37. Moderating variable in Regression

    I'm running a regression with a Moderating variable (M) and an independent variable (X). Its my understanding that I need to run the following...

    Started by tiab2005‎, 07-26-2010 03:10 AM
    • Replies: 1
    • Views: 3,432
    07-26-2010, 10:36 AM Go to last post
  38. Logistic regression

    What does it mean when I have insignificant Wald test for all my predictor variables in the (Variables in the Equation) table, although the goodness...

    Started by Elham‎, 10-30-2011 02:49 PM
    • Replies: 13
    • Views: 3,432
    11-02-2011, 01:36 PM Go to last post
  39. Novice needs help with Maximum Likelihood Estimation of Logit Model

    Hi all, Id be grateful for some help. I realise this is perhaps elementary stuff for many but as someone without a formal statistics background, I...

    Started by An Novice‎, 09-16-2011 06:25 AM
    • Replies: 3
    • Views: 3,431
    09-16-2011, 09:21 AM Go to last post
  40. Multiple regression and correlation matrix

    Hi. I got some data I am about to present in a report. At first I created a correlation matrix, and there was no statistical significant...

    Started by stinestalker‎, 06-06-2012 02:54 PM
    • Replies: 2
    • Views: 3,430
    06-09-2012, 09:17 PM Go to last post
  41. Coefficients in linear regression

    hi i am using spss 17.0 i am using linear regression to predict behaviours for the coefficent output does the constant and the indperpentant...

    Started by aarong‎, 07-21-2011 09:15 AM
    • Replies: 6
    • Views: 3,423
    07-21-2011, 03:32 PM Go to last post
  42. Transformation of Data - NO linearity!

    PROBLEM >>>>>>>>> The savings rate (personal savings/disposible income) and per capita disposible income (DPI) are listed for the 50 countries...

    Started by recursive1990‎, 04-01-2011 12:07 PM
    • Replies: 2
    • Views: 3,421
    04-07-2011, 01:17 AM Go to last post
  43. help with interpretation of multiple regression results

    Dear forum members, I am running multiple regressions with SPSS and I need help with possible interpretation of my results. Firm...

    Started by metanex‎, 09-03-2009 02:19 AM
    • Replies: 0
    • Views: 3,418
    09-03-2009, 02:19 AM Go to last post
  44. Arrow How to deal with the dependent predictors in the regression ?

    My data have some high correlated predictors, so it fit worse in the linear regression. what regression methods are proposed to solve this...

    Started by purple‎, 11-03-2010 01:39 PM
    • Replies: 4
    • Views: 3,418
    11-04-2010, 11:18 AM Go to last post
  45. Distribution of Residual Sum of Squares

    We know that the residual sum of squares (RSS) has a  sigma^2 * Chi Square (n-p degrees of freedom) So if I want to simulate many...

    Started by spairos‎, 01-02-2014 06:09 PM
    • Replies: 3
    • Views: 3,418
    01-02-2014, 09:07 PM Go to last post
  46. Desperately Need Help with Regression Analysis..Please :)

    hello :) I'm new here (and in doing statistics in general). I have to do a regression analysis on panel data (10 groups, 9 years - 90...

    Started by jayde‎, 01-20-2011 04:03 AM
    multiyear data
    • Replies: 4
    • Views: 3,417
    01-20-2011, 11:17 AM Go to last post
  47. regression analysis with an infinite number of predictors....

    so i was reading this article and kinda got me wondering... for standard, OLS multiple regression... can we have an infinite number of...

    Started by spunky‎, 03-13-2011 11:19 PM
    • Replies: 2
    • Views: 3,417
    03-16-2011, 03:30 PM Go to last post
  48. Angry Multiple regression, removing very small coefficients

    Hello, I did 'backwards method' multiple regression in SPSS to predict 'energy'. The R^2 value is 0.951. Here is the final output model of the...

    Started by bradyj2‎, 02-28-2012 08:43 AM
    • Replies: 1
    • Views: 3,412
    02-28-2012, 11:42 AM Go to last post
  49. Question What GLM should is use in this dataset?

    Hi everyone and thank you! I'm not a student of statistics, i'm in a different but somehow related field. i'm doing this research, been reading...

    Started by juantamad‎, 03-05-2011 03:46 AM
    categorical data analysis, correspondence analysis, regression, test of indepdence
    • Replies: 1
    • Views: 3,408
    03-05-2011, 04:22 AM Go to last post
  50. Test Review HELP!!

    this is a example for my test review and i dont know how to do b,c,d,e parts of it can someone tell me how to do it/the answer so i can better...

    Started by patshea098‎, 04-23-2011 08:14 AM
    • Replies: 1
    • Views: 3,408
    04-23-2011, 11:18 AM Go to last post
  51. log-lin regression vs lin-lin

    Hi guys, I'm a new guest in this forum so first of all I'm Giovanni and nice to meet you. I'm solving a problem set of Econometrics course and...

    Started by gionni25‎, 03-15-2015 10:23 AM
    • Replies: 2
    • Views: 3,400
    03-16-2015, 03:24 AM Go to last post
  52. Regression in longitudinal survey data

    Hello, I have some longitudinal survey data which measures change in depression from time 1 to time 2. I want to analyse what factors, such as...

    Started by wb3gt‎, 07-26-2012 11:17 AM
    • Replies: 0
    • Views: 3,399
    07-26-2012, 11:17 AM Go to last post
  53. Normality / QQ-Plot in Generalized Linear Models (GLM)

    Hi, sorry if this is a frequent question, but I did not find an appropriate answer: If I have a GLM with a non-normal distributed outcome...

    Started by mmercker‎, 06-26-2016 02:57 PM
    glm assumptions, glm diagnostocs, normality, qq-plot
    • Replies: 8
    • Views: 3,399
    07-06-2016, 07:59 PM Go to last post
  54. Multi-Factors model - Linear regression on Market Size

    Dear all, I'm working on a multi factors model analysis to come up with a formula to estimate market size of some countries based on several...

    Started by dudumomo‎, 05-20-2013 10:02 AM
    • Replies: 4
    • Views: 3,393
    05-22-2013, 12:46 PM Go to last post
  55. Assumption of Linearity not fulfilled - what to do?

    Dear All, I want to conduct a moderated hierarchical regression. I have 3 IVs and one moderator. I started to test the underlying assumptions of...

    Started by bluemuly‎, 09-17-2014 06:02 AM
    • Replies: 1
    • Views: 3,393
    09-17-2014, 02:53 PM Go to last post
  56. Cool weird difference between measures of Goodness-of-Fit ??

    Dear stats friends I have run an ordinal regression in SPSS on 700 subjects I have data on an ordinal DV: heart disease score between 0 and 3. ...

    Started by wulfgar‎, 12-30-2016 12:38 PM
    • Replies: 2
    • Views: 3,389
    12-30-2016, 12:45 PM Go to last post
  57. Poisson regression

    Hello, Is it possible to do a Poisson regression with only 6 observations? What is the minimum number of observations possible? Giovanna

    Started by Giovanna‎, 06-18-2009 05:48 AM
    • Replies: 0
    • Views: 3,387
    06-18-2009, 05:48 AM Go to last post
  58. Multiple vs univariate regression

    Hi, I was wondering what are the pitfalls of fitting multiple univariate regression equations to a response instead of fitting all independent...

    Started by jonG‎, 09-03-2010 05:34 PM
    • Replies: 1
    • Views: 3,386
    09-03-2010, 05:47 PM Go to last post
  59. who can help me with multiple regression analysis???

    I've calc correlation coefficients between several variables. The results are very promissing, since showing high correlation. The multiple...

    Started by PEIM‎, 09-19-2005 04:29 PM
    • Replies: 1
    • Views: 3,383
    09-19-2005, 06:44 PM Go to last post
  60. Rescaling Variables

    hi guys, I'm trying to rescale variables so that I don't get such small coefficients. How should I go about this? Multiply independent by a...

    Started by Ageo7836‎, 05-26-2011 08:39 PM
    • Replies: 1
    • Views: 3,380
    05-29-2011, 07:01 PM Go to last post

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