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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. GLLAMM syntax for using instruments

    I am seeking help to write the GLLAMM command to estimate y1 = x1 x2 x1*x2 x3; switching equation is x1 = x2 x3 x4 x5, where y1 is the outcome...

    Started by Desmond‎, 11-17-2013 12:31 PM
    gllamm, instrumental variables.
    • Replies: 0
    • Views: 1,321
    11-17-2013, 12:31 PM Go to last post
  2. Exclamation GLM diagnostic plots in r

    I am trying to fit a Gamma glm in R. getting very weird diagnostics even though all variables are significant. Please advise as to how i can improve...

    Started by doy_h(r)‎, 06-04-2015 02:56 PM
    • Replies: 3
    • Views: 2,798
    06-05-2015, 07:49 AM Go to last post
  3. GLM help with interactions

    I have a regression model I am trying to build using GLM. I have a continuous response variable, a main variable of interest that is dichotomous and...

    Started by pjtatman‎, 10-11-2011 03:49 PM
    • Replies: 1
    • Views: 2,527
    10-11-2011, 04:47 PM Go to last post
  4. glm in R - coding issue

    Dear all, I have been attempting to use a generalized linear model in R to determine if any variation existed between the different feeding...

    Started by craigpoconnell11‎, 12-04-2012 12:11 PM
    • Replies: 2
    • Views: 4,260
    12-04-2012, 02:22 PM Go to last post
  5. GLM Interpretation - confused.com

    Hi Folks, This may seem pretty straight forward to many of you but I'm could really do with some help. I'm using the generalized linear model to...

    Started by railway‎, 10-21-2011 10:00 AM
    • Replies: 3
    • Views: 3,066
    11-01-2011, 09:46 AM Go to last post
  6. GLM multivariate analysis with proportion & continuous data

    Hi there, I am looking to perform some multivariate analysis on my data (such as canonical correlation analysis or multivariate multiple...

    Started by cmg212‎, 07-27-2014 12:06 PM
    • Replies: 1
    • Views: 2,752
    10-11-2015, 04:11 PM Go to last post
  7. GLM on non-linear/curvilinear data

    Dear all! I’m sure somebody of you will help me with my non-linear data-problem. I measured a fitness correlate of an animal (response variable)...

    Started by Fred.‎, 09-30-2016 08:54 AM
    anova
    • Replies: 6
    • Views: 1,577
    10-19-2016, 07:54 AM Go to last post
  8. GLM Parameter Estimation in R

    Hello everyone! I was searching for GLM content, then I found this forum, so I thought you could help me :). I'm starting to study GLMs and I know...

    Started by Kol‎, 02-24-2011 08:02 PM
    • Replies: 0
    • Views: 4,523
    02-24-2011, 08:02 PM Go to last post
  9. GLM repeated measurements with very large database

    I am trying to perform a multivariate regression analysis in SPSS. The problem is the database is very large (one variable contains over 200.000...

    Started by drGG‎, 01-27-2011 08:42 AM
    • Replies: 0
    • Views: 2,873
    01-27-2011, 08:42 AM Go to last post
  10. GLM: Assumptions and choosing a model

    Hello all, I have a question that I would be interested in hearing other's opinions/feedback. I have monthly cost data from 2006 to 2011 (72...

    Started by lancearmstrong1313‎, 08-22-2012 07:30 AM
    2 Pages
    1 2
    • Replies: 16
    • Views: 6,517
    08-24-2012, 06:26 PM Go to last post
  11. GLM: possible to constrain 1 beta weight?

    Hi, I am interested in comparing two design matrices in which the parameter values of interest are perfectly negatively correlated. Of course, via...

    Started by kurtio‎, 10-06-2012 02:21 PM
    constrained regression, glm
    • Replies: 3
    • Views: 2,009
    10-12-2012, 08:14 PM Go to last post
  12. GLMM random effect conceptualization

    Hello, I have a general question concerning GLMM. I would like to model animal counts as a function of characteristics of the sampling location and...

    Started by filups21‎, 05-14-2012 08:13 AM
    glmm
    • Replies: 0
    • Views: 1,625
    05-14-2012, 08:13 AM Go to last post
  13. GLS (Generalized least Squares) STATA

    generalized least squares (GLS) is a technique for estimating the unknown parameters in a linear regression model. GLS (Generalized least Squares)...

    Started by OlhDt_semarang‎, 04-27-2016 05:16 AM
    • Replies: 0
    • Views: 1,793
    04-27-2016, 05:16 AM Go to last post
  14. GLS regression STATA

    Hi, is there a command in Stata that allows for GLS regression without panel data? or am I missing something? Thanks

    Started by harleystats‎, 05-13-2015 06:00 PM
    regression analysis, regression help
    • Replies: 0
    • Views: 2,712
    05-13-2015, 06:00 PM Go to last post
  15. GLS simulation: Power of certain effects

    Hi all, I have three models that use the same response variable (let's call it Y) and is testing for the effect of three predictor variables...

    Started by Lophotrochozoan‎, 08-21-2013 05:01 PM
    • Replies: 0
    • Views: 1,243
    08-21-2013, 05:01 PM Go to last post
  16. goal is logistical regression model...where to start

    I'm working with weather data using systat software. I have raw values of dependent variable visibility that have been categorized into boolean 1/0...

    Started by civilsurfer‎, 02-07-2011 12:08 PM
    • Replies: 0
    • Views: 1,992
    02-07-2011, 12:08 PM Go to last post
  17. Good Tool to generate probability of a sale for 300,000 products

    Hi - I am trying to determine a good tool that will help me generate a probability of a sale for a list of of 300,000 products. I have a table of...

    Started by BlendRed3‎, 03-06-2016 01:37 PM
    • Replies: 0
    • Views: 834
    03-06-2016, 01:37 PM Go to last post
  18. goodness of fit - with a twist!

    I have a study with 300 subjects. Each subject has completed a cardio pulmonary test (CPET). Therefore, I have 300 datasets that each contain 1...

    Started by rileynic‎, 02-21-2014 09:36 PM
    • Replies: 1
    • Views: 1,175
    02-24-2014, 09:06 AM Go to last post
  19. Goodness of fit for Mixed effects Logistic Regression

    Dear all, I am trying to assess the goodness of fit of random effects Logistic regression. a) I would have used a Hosmer-Lemeshow test, but how...

    Started by ledzep‎, 12-02-2013 06:15 PM
    • Replies: 4
    • Views: 5,754
    12-02-2013, 09:52 PM Go to last post
  20. Goodness of fit measure for a MNL model

    Hello! I have carried out MNL regression with the same model among different samples and I now need to compare the results against each other. In...

    Started by Jri‎, 12-18-2014 11:31 AM
    goodness of fit, mnl, mnl model
    • Replies: 1
    • Views: 1,627
    12-18-2014, 11:40 AM Go to last post
  21. goodness of fit test for nonlinear, nonmonotonic data.

    I have a dataset which I believe can be modelled by a sinusoidal regression with increaing mean (in time series). I have performed spectral...

    Started by katlin‎, 02-24-2013 11:48 AM
    • Replies: 0
    • Views: 2,321
    02-24-2013, 11:48 AM Go to last post
  22. Goodness of fit versus AIC/BIC versus pseudo R squares

    This is geared to Logistic regression I understand in theory you use these for different reasons. AIC for comparing non-nested models and goodness...

    Started by noetsi‎, 03-22-2013 05:17 PM
    • Replies: 6
    • Views: 4,047
    03-25-2013, 10:10 PM Go to last post
  23. Goodness-of-fit for Poisson regression

    Hello, I have a couple questions that I'd love some help with. Thanks very much for your time! I'm running a Poisson regression to look at...

    Started by kirkby‎, 07-27-2012 12:14 PM
    • Replies: 1
    • Views: 4,717
    08-01-2012, 06:22 PM Go to last post
  24. Got some questions on simple regression

    Hello everybody! I'm learning how to use SAS program and I have some questions when I got this ANOVA (view pic) - Are the two parameters estimated...

    Started by ElijahWood‎, 02-08-2017 12:36 PM
    • Replies: 4
    • Views: 2,068
    02-08-2017, 10:20 PM Go to last post
  25. Granger Causality: Lag length selection.

    Consider simple G-Causality on two stationary time series vectors, each with 100+ observations. It's daily financial market time series data. I...

    Started by derksheng‎, 08-13-2012 02:46 AM
    • Replies: 0
    • Views: 2,326
    08-13-2012, 02:46 AM Go to last post
  26. Graphical Interpretation of an Interaction Effect

    Hello, I have included an interaction term in my regression and was hoping to graphically interpret it as my variables are continuous. I found a...

    Started by Spuz123‎, 08-01-2013 05:39 AM
    • Replies: 0
    • Views: 1,310
    08-01-2013, 05:39 AM Go to last post
  27. Graphical representation and functions of non parametric confidence intervals

    I calculated the 95% confidence intervals for alpha and beta coefficients through non parametric bootstrapping (10000 iterations). Now, I'd like to...

    Started by Oritteropus‎, 01-12-2012 05:18 AM
    • Replies: 2
    • Views: 3,221
    01-15-2012, 07:05 AM Go to last post
  28. Question Graphically check linearity in logit regression

    Hi all, I am running a logit regression where the outcome variable is binary. I am interested in checking, graphically, whether the relationship...

    Started by Phaedrus‎, 07-21-2014 07:50 AM
    2 Pages
    1 2
    • Replies: 24
    • Views: 16,810
    04-19-2016, 10:59 AM Go to last post
  29. Greatest impact prediction

    Hi, please i have one Question. If i have this results (Stepwise method) Can i say: 1) Better for predict Y is model 4 2) Regression...

    Started by zonicek‎, 03-29-2012 04:52 PM
    • Replies: 1
    • Views: 1,319
    03-31-2012, 12:39 AM Go to last post
  30. Gretl - Pooled Time Series Cross Sectional Data

    I've been working on a multiple regression analysis on bank failures using a probit model. I am currently using cross sectional data but I would...

    Started by Rosie‎, 07-18-2011 03:18 PM
    gretl, panel, probit, regression, time series
    • Replies: 1
    • Views: 5,271
    07-18-2011, 05:35 PM Go to last post
  31. Group size analysis over time

    Hi, I was wondering if anyone could help me please. I am looking at how group size changes with the amount of food available in a group of...

    Started by Emma2415‎, 09-13-2011 08:21 AM
    • Replies: 0
    • Views: 1,955
    09-13-2011, 08:21 AM Go to last post
  32. Grouping Categorical Variables in Regression differently in Main vs Interactions

    All, I have a very peculiar problem that I am trying to solve. What I mean is, the following is an explanation of the current solution that has...

    Started by FigNewtons1978‎, 06-13-2013 12:39 AM
    categorical variables, multiple regression
    • Replies: 0
    • Views: 1,244
    06-13-2013, 12:39 AM Go to last post
  33. Grouping educational level in different variables

    hi there! I'm trying to apply a regression model based on the Human Capital Theory. Besides other independent variables, I have grouped the...

    Started by Fanor‎, 02-25-2014 01:51 PM
    education, educational level, human capital theory, regression, variables
    • Replies: 6
    • Views: 1,706
    02-25-2014, 04:06 PM Go to last post
  34. Grouping response in logistic regression

    Hi, I'm new to statistics and hope to find some help here. I can't find any information on why in logistic regression a binary response is often...

    Started by caro‎, 02-17-2012 08:03 AM
    • Replies: 2
    • Views: 1,980
    02-17-2012, 11:10 AM Go to last post
  35. growth curve models

    hi all, suppose my outcome is total yearly savings ($). i want to use growth curve models to see how 4 different groups change in their savings...

    Started by leonedelman‎, 01-13-2017 06:41 AM
    growth curve models
    • Replies: 0
    • Views: 2,287
    01-13-2017, 06:41 AM Go to last post
  36. 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: 3,505
    12-09-2010, 05:39 AM Go to last post
  37. growth regression results

    I am doing a standard neoclassical growth regression for the European member states for the period 1991-2010. I regress GDP per capita growth on...

    Started by tedylov‎, 03-12-2012 06:02 PM
    • Replies: 0
    • Views: 1,735
    03-12-2012, 06:02 PM Go to last post
  38. Guidance needed

    I am in healthcare and I want to predict future volume (primarily just the end of the current month). The problem I have with using a traditional...

    Started by psrs0810‎, 11-24-2014 08:03 PM
    • Replies: 2
    • Views: 1,351
    11-25-2014, 04:42 PM Go to last post
  39. hausman test

    Dear community, I analyse purchase decisions on different products j over a duration of t days. I would like to include random or fixed effects. When...

    Started by peter1985‎, 06-12-2015 12:35 PM
    • Replies: 1
    • Views: 1,587
    06-14-2015, 10:12 AM Go to last post
  40. Hausman Test - Do I correct for heteroscedasticity and autocorrelation?

    Hi fella's! I am currently working on a regression analysis of a demand curve and i'm trying to test endogeneity (because I expect the price to be...

    Started by Nicolasken‎, 06-02-2014 02:01 PM
    hausman, hausman test, heteroscedasticity
    • Replies: 0
    • Views: 2,242
    06-02-2014, 02:01 PM Go to last post
  41. Hausman test VS Mundlak model; choosing between fixed-effects and random-effects

    I am using panel data and I have to choose between fixed-effect and random-effect models. I run the Hausman test, the H0 (i.e., the difference in...

    Started by lukeskywalker84‎, 04-09-2014 10:05 AM
    fixed effects model, hausman, mundlak, random effects model
    • Replies: 0
    • Views: 3,286
    04-09-2014, 10:05 AM Go to last post
  42. Hausman-McFadden Test (IIA)

    Hello, I need to carry out a Hausman-McFadden test before I run a multinomial logistic regression on my data. While I've successfully run an...

    Started by debadog‎, 07-07-2016 07:08 AM
    • Replies: 0
    • Views: 1,669
    07-07-2016, 07:08 AM Go to last post
  43. Have 4 dependent and 10 independent variables - which test should I use?

    Hi all, I'm interested in the potential effects of water pollution on feather color of a bird. For this, I calculated 4 color variables for each...

    Started by NatL‎, 11-09-2016 04:47 PM
    dbrda, linear regression, multivariate analysis, permanova, ridge regression
    • Replies: 0
    • Views: 1,785
    11-09-2016, 04:47 PM Go to last post
  44. have a .por file, no spss, need to run analysis by tomorrow

    Hi all.. I thought I could open the .por file I have on my home computer but it turns out the version I have doesn't open a file like this with more...

    Started by Empathy‎, 11-23-2009 09:13 PM
    • Replies: 0
    • Views: 3,765
    11-23-2009, 09:13 PM Go to last post
  45. Unhappy Having problems with CATREG for big and small data sets and defining scaling level.

    0 down vote favorite I am facing with an interesting problem here. I have a data set containing mixed nature of independent variables (some are...

    Started by Blain Waan‎, 09-19-2012 08:00 AM
    • Replies: 0
    • Views: 1,730
    09-19-2012, 08:00 AM Go to last post
  46. Having trouble with my units in regression analysis.

    Hello, I am attempting to regress future currency returns against changes in economic variables (GPD, inflation, index values etc). I am having some...

    Started by regressor96‎, 05-17-2017 05:07 PM
    • Replies: 0
    • Views: 625
    05-17-2017, 05:07 PM Go to last post
  47. Heckman 2 step procedure - how to formulate probit model for real estate?

    Dear all, I'm doing research on the attributes that determine listing prices of houses. Price is updated to the current date and independent...

    Started by RealEstate‎, 08-02-2013 05:57 PM
    2 step procedure, heckman, houses, probit, real estate
    • Replies: 0
    • Views: 2,873
    08-02-2013, 05:57 PM Go to last post
  48. Heckman model

    Hi, I'm running a heckman model however some issues have arisen: 1. The log likelihood function is not concave and does not converge after a...

    Started by economix‎, 03-28-2012 04:11 PM
    • Replies: 0
    • Views: 2,459
    03-28-2012, 04:11 PM Go to last post
  49. Heckman selection model

    Dear All I am running a GMM panel data. The most important independent variable includes a huge number of zero observations (45%). How to...

    Started by momo‎, 07-29-2012 01:44 AM
    • Replies: 0
    • Views: 2,206
    07-29-2012, 01:44 AM Go to last post
  50. Heckman selection model - suitable for categorical and continuous DVs?

    Hello everyone, I am trying to figure out whether Heckman selection can be and should be used for my data. I have the same group of investors who...

    Started by oliveclaude‎, 05-26-2014 05:30 PM
    categorical dvs, heckman selection model, probit, sample selection, twostep procedure
    • Replies: 0
    • Views: 1,565
    05-26-2014, 05:30 PM Go to last post
  51. Hedonic regression

    What is the rationale behind hedonic quality index and how to interpret it? For any example/explanation beside the Wikipedia, I would be very...

    Started by john_f‎, 11-28-2014 03:25 PM
    multiple regression, regression
    • Replies: 0
    • Views: 1,144
    11-28-2014, 03:25 PM Go to last post
  52. Hell Please. Linear Regression Model

    Which of the following is NOT assumed to contribute to uncertainty in predicting y from x in a standard Model I linear regression. a. Uncertainty...

    Started by helppleasestats‎, 05-18-2015 08:57 AM
    help me, linearregression, mcq
    • Replies: 8
    • Views: 1,608
    05-19-2015, 09:42 AM Go to last post
  53. Hello, I need some help please with two problems

    Hey guys, I have been struggling in this class and I am down to the last week, I have to pass this homework and extra credit problem to pass the...

    Started by run2rush2112‎, 12-02-2016 10:11 PM
    • Replies: 2
    • Views: 2,505
    12-04-2016, 08:13 PM Go to last post
  54. Help

    Hi Everyone, Is a sample of 20 companies too small for a dividend payout study? in SPSS I get a negative Adjusted R sq you will find attached...

    Started by c_b_s90‎, 05-22-2015 08:14 PM
    • Replies: 1
    • Views: 1,284
    06-07-2015, 01:51 PM Go to last post
  55. Unhappy Help !! 3 days for my thesis ! Robustness for independent variables?

    Dear Forum, I have a huge problem. I am running a logisitc regression and for some IVs the assumption of linearity was not met. Now I need...

    Started by beatoctane‎, 06-12-2016 07:32 AM
    • Replies: 0
    • Views: 986
    06-12-2016, 07:32 AM Go to last post
  56. Help - Autocorrelated and r squared crashes with GLS

    I'm trying to understand the theory behind something. I've got a time series multiple regression that gets about a .83 coefficient of determination....

    Started by ItPaysTheBills‎, 04-19-2013 09:19 PM
    • Replies: 0
    • Views: 2,404
    04-19-2013, 09:19 PM Go to last post
  57. Help - coefficients have wrong signs!

    Hi guys I'm a struggling with an econometric model. I am trying to predict tenant demand for office space based on a selection of 5 lagged...

    Started by Pete‎, 05-13-2012 11:21 PM
    • Replies: 6
    • Views: 2,125
    05-17-2012, 10:36 AM Go to last post
  58. Help - Moderation with dummies in Cox Regression

    Hi, I am currently working on my masters thesis. I am testing how team change following an acquisition affects the survival of the...

    Started by Giu_Gre‎, 12-14-2013 02:23 PM
    • Replies: 0
    • Views: 1,722
    12-14-2013, 02:23 PM Go to last post
  59. Help a newbie with multiple statistical regression.

    I want to run a multiple stastical regression in SPSS, trying to correlate different biomarkers with a brain region (hippocampus), at the same...

    Started by trexter‎, 07-08-2014 11:16 AM
    • Replies: 4
    • Views: 1,695
    07-10-2014, 07:28 AM Go to last post
  60. Question Help a programmer with very simple Linear Regression (ordinary least squares?)

    Hi everyone, I'm a programmer, so I don't have much understanding of statistics. But I am supposed to write a program for my company that...

    Started by jamescox‎, 10-08-2009 04:02 PM
    • Replies: 4
    • Views: 2,839
    07-26-2010, 07:27 AM Go to last post

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