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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. How to study association between categorical variables?

    I have 4 categorical variables in a dataset let X1, X2, X3 and Y. Where X1,X2 and Y is a binary random variable and X3 have 3 categories. X1,X2...

    Started by askazy‎, 07-10-2016 12:33 PM
    • Replies: 6
    • Views: 725
    07-10-2016, 07:00 PM Go to last post
  2. Poisson regression for count data

    I need to fit a model to study the severity of a bicycle accident based on other explanatory variables. The data description is X1: is the use of...

    Started by askazy‎, 07-10-2016 07:24 AM
    • Replies: 1
    • Views: 1,114
    07-10-2016, 10:21 AM Go to last post
  3. Problem with Data analysis on Likert Scale!

    Hello John, Im a student of Business studies and am working on a research project titled as "Impact of Physical environment on Employee...

    Started by Asma Gm‎, 03-26-2008 05:56 AM
    • Replies: 10
    • Views: 14,219
    07-09-2016, 03:44 AM Go to last post
  4. What's the meaningful difference between an odds ratio and a regression coeffecient?

    Moved from here: http://www.talkstats.com/showthread.php/65740-What-s-the-meaningful-difference-between-an-odds-ratio-and-a-regression-coeffecient ...

    Started by PeterH‎, 07-08-2016 09:49 PM
    • Replies: 0
    • Views: 605
    07-08-2016, 09:49 PM Go to last post
  5. Data set simulation

    Answered on other threads, sorry for posting

    Started by David2‎, 07-07-2016 12:07 PM
    correlation, regression, simulation
    • Replies: 1
    • Views: 1,189
    07-07-2016, 01:12 PM Go to last post
  6. 95% confidence interval linear regression

    Hi everyone, I have perhaps an easy question but I can't deal with it. I use linear regression on my data with 3 dependent variables:...

    Started by HannaMa‎, 07-07-2016 10:37 AM
    • Replies: 0
    • Views: 517
    07-07-2016, 10:37 AM Go to last post
  7. Multinomial logistic regression - testing assumptions

    Hello everyone, I'm trying to perform an MLR with 4 continuous predictors for one ordinal dependent. I've tested my assumptions for the MLR except...

    Started by debadog‎, 06-24-2016 09:55 AM
    • Replies: 8
    • Views: 1,025
    07-07-2016, 09:02 AM Go to last post
  8. 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: 704
    07-07-2016, 07:08 AM Go to last post
  9. 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: 1,231
    07-06-2016, 07:59 PM Go to last post
  10. Interaction effect: only main effects significant

    Dear community, I'm running a regression model to test, if there is a difference between the Eastern and Western Germans supporting redistribution...

    Started by Marnie‎, 07-03-2016 09:10 AM
    • Replies: 6
    • Views: 780
    07-04-2016, 10:26 PM Go to last post
  11. Need help doing complex transformations on variables to do a regression

    I need help doing some transformations on variables--I am kind of real rusty in logarithms and that may be the way to set up this complicated...

    Started by tomcat.josey‎, 07-03-2016 12:33 PM
    • Replies: 0
    • Views: 517
    07-03-2016, 12:33 PM Go to last post
  12. Post Dis./Avantadges of estimating of binary response model with OLS

    In the Maximum Likelihood Estimator context, I can't find answers for those two questions: - What are the advantages and disadvantages of...

    Started by endlessend25‎, 06-30-2016 07:03 AM
    binary response models, mle, ols
    • Replies: 8
    • Views: 1,131
    07-02-2016, 12:47 PM Go to last post
  13. Comparing regression coefficients between groups

    Hello! I am a psychology student and Iím doing a research which I need help with. The research is about parenting stress in parents of children...

    Started by Mila‎, 07-01-2016 08:09 AM
    regression coefficients
    • Replies: 5
    • Views: 1,047
    07-01-2016, 03:10 PM Go to last post
  14. test of non-linearity

    I am reading an interesting econometric book where the author suggests testing if non-linearity exist by specifying a quadratic term, if its...

    Started by noetsi‎, 06-25-2016 03:56 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 3,136
    06-30-2016, 02:24 PM Go to last post
  15. Generalized Linear Model: help interpeting interaction

    Hello! I apologise in advance if I missed it, but I couldn't find an answer in previous threads. I run a generalized linear model with 1...

    Started by ernesthor‎, 06-29-2016 07:09 AM
    generalized linear model, interaction effect
    • Replies: 1
    • Views: 617
    06-29-2016, 07:54 AM Go to last post
  16. MSE RMSE for Modeling/Technique Examination

    I have heard people talking about creating the best modeling approach, best propensity scores, best approach for dealing with missing data, etc. -...

    Started by hlsmith‎, 01-13-2016 02:08 PM
    • Replies: 10
    • Views: 1,532
    06-28-2016, 03:14 PM Go to last post
  17. Effect size+power calculations for spotlight analyses

    EDIT: I mistakenly typed "spotlight" when I really meant "floodlight". Corrected for that. I have a question about calculating effects sizes and...

    Started by carlsonturner‎, 06-28-2016 09:45 AM
    • Replies: 2
    • Views: 566
    06-28-2016, 01:45 PM Go to last post
  18. Regression assumptions

    this comes from Introduction to Econometrics by Stock and Watson. On page 161 they note in a footnote "....it might be helpful to note that some...

    Started by noetsi‎, 06-25-2016 02:45 PM
    • Replies: 9
    • Views: 866
    06-27-2016, 05:48 PM Go to last post
  19. p-value for logistic regression

    How do I find the p-value for logistic regression. For example , for a glm output I : z -value : 1.32 P ( > | Z | ) = 0.186696 If it were a...

    Started by valentina89‎, 06-26-2016 11:56 AM
    glm
    • Replies: 3
    • Views: 1,305
    06-27-2016, 11:11 AM Go to last post
  20. Relative impact

    I circle back to this question every few years, it is becoming critical these days and my readings have not turned up a strong consensus on this...

    Started by noetsi‎, 06-20-2016 05:30 PM
    • Replies: 9
    • Views: 1,831
    06-27-2016, 11:02 AM Go to last post
  21. Nonlinear Canonical Correlation Analysis

    Hello In the application of Nonlinear Canonical Correlation Analysis I was really confused about "weights and component loadings" !! can any one...

    Started by osamastat‎, 06-26-2016 11:28 PM
    • Replies: 0
    • Views: 552
    06-26-2016, 11:28 PM Go to last post
  22. Compare the estimated model with the model with intercept-only

    The question is: How do the test to compare the estimated model with the model with intercept-only ? How can I comment on the result ? I think we...

    Started by valentina89‎, 06-25-2016 06:40 AM
    logit regression, regresion, test statistic
    • Replies: 5
    • Views: 1,289
    06-26-2016, 12:08 PM Go to last post
  23. Change regression model ($x^*_i = x_i -10$)

    Hi there.:wave: I'm solving an exercise on multiple linear regression. Near the end I will be asked for the same data as the previous model, it is...

    Started by valentina89‎, 06-23-2016 04:53 PM
    parameter estimation, regression model
    • Replies: 5
    • Views: 1,082
    06-26-2016, 04:18 AM Go to last post
  24. Estimation of count regressors that tend to only increase with time

    Hello dear forum members, I am seeking you comments on the following issue that I noticed in the project that I am working on. So, in 2014 I...

    Started by kiton‎, 06-25-2016 10:27 AM
    count regressors, panel model
    • Replies: 0
    • Views: 365
    06-25-2016, 10:27 AM Go to last post
  25. Find costant that satisfies the variance

    Hi, I have this regression model : Y_i=B_1+B_2logx_i+2e_i e_i~N(0,σ2) I am asked to find the constant :

    Started by valentina89‎, 06-24-2016 03:02 AM
    regresion, variance
    • Replies: 0
    • Views: 490
    06-24-2016, 03:02 AM Go to last post
  26. Supporting References for my analysis choice level vs. difference regression

    All, I need some help in finding some good references which help me to document the regression approach I used. I am analyzing the influence of...

    Started by fuchs09‎, 06-22-2016 08:13 AM
    • Replies: 0
    • Views: 471
    06-22-2016, 08:13 AM Go to last post
  27. Partial effect and first-difference estimator

    Hello guys, I have a exercise for which I found an answer but i'm not sure of it. I need to estimate the demand for passenger flights in the US...

    Started by endlessend25‎, 06-21-2016 08:40 AM
    • Replies: 0
    • Views: 536
    06-21-2016, 08:40 AM Go to last post
  28. Variable transformation in OLS regression

    Hi there, I have a question related to the transformation of independent variables in an OLS regression. More specifically: When I transform...

    Started by Tux‎, 06-14-2016 10:08 PM
    • Replies: 7
    • Views: 2,911
    06-20-2016, 06:48 PM Go to last post
  29. AUC below 0.5

    Hi, I am calculating area under the curve (AUC) values for the individual independent variables of a conditional logistic regression model. I am...

    Started by teapot‎, 06-16-2016 10:50 PM
    • Replies: 3
    • Views: 892
    06-20-2016, 12:23 PM Go to last post
  30. Effective DoF with lag1 autocorrelated data...how to actually incorporate ?

    Hi all, I have some time series data that is auto-correlated, and I am trying to account for in my correlation analysis. I have found out how to...

    Started by iceman92‎, 06-18-2016 12:13 AM
    • Replies: 2
    • Views: 575
    06-20-2016, 02:41 AM Go to last post
  31. Can someone help me interpret this data?

    I'm performing multiple regression for an international relations thesis regarding various predictor variables and the outcome of intervention in...

    Started by datorres85‎, 06-18-2016 09:01 PM
    • Replies: 5
    • Views: 606
    06-19-2016, 06:58 PM Go to last post
  32. Pooled GLS and POLS

    Hello everyone, This semester I'm studying, OLS, GLS, RE, FE, MLE, and a lot of beautiful concepts :D. But I get a little bit concerning the...

    Started by endlessend25‎, 06-18-2016 07:57 AM
    gls, ols, pooled
    • Replies: 0
    • Views: 767
    06-18-2016, 07:57 AM Go to last post
  33. Two categorical variables, one continuous dependent variable

    Hi, I want to check whether linear regression is the statistical tool I need and ways of checking whether my data is appropriate for this...

    Started by SpoodleBeast‎, 06-15-2016 03:33 PM
    • Replies: 3
    • Views: 748
    06-17-2016, 12:23 PM Go to last post
  34. CI for Dependent Variable in Multiple Linear Regression

    I have a regression model but I want to get a 95% confidence interval of the dependent variable for given values of the independent variables. I...

    Started by Jegpeg‎, 02-25-2016 08:21 PM
    confidence interval, regression
    • Replies: 1
    • Views: 448
    06-17-2016, 11:58 AM Go to last post
  35. Regression Analysis from R output

    plz delete this thread.

    Started by absxneverdie‎, 06-17-2016 09:50 AM
    • Replies: 0
    • Views: 576
    06-17-2016, 09:50 AM Go to last post
  36. interaction continuous*dummy:possible to treat continuous variable as the moderator?

    Hey everyone. This is my first post here so please be kind to me :) . For my thesis my aim is to run a moderation analysis between organizational...

    Started by noodlee999‎, 06-16-2016 06:44 AM
    interaction, interpretation, likert, moderation, regression
    • Replies: 1
    • Views: 463
    06-17-2016, 04:42 AM Go to last post
  37. Post Consolidation of items for regression analysis

    Hello everyone! I am a stats newbie and have a very basic question. Please forgive me if the question may seem too foolish. I wanted to conduct...

    Started by scooper23‎, 06-15-2016 08:31 PM
    • Replies: 1
    • Views: 777
    06-16-2016, 09:12 PM Go to last post
  38. General guidance on interpreting residuals and diagnostics for linear regressions

    Now that I'm more comfortable with regression (in SAS) and understand the assumptions needed for linear regression, I'm able to run simple models of...

    Started by semidevil‎, 06-13-2016 11:00 AM
    • Replies: 5
    • Views: 1,090
    06-14-2016, 07:18 AM Go to last post
  39. Multiple Regression Analysis - Two independent variables, one w/same values

    Post closed.

    Started by ablong‎, 06-13-2016 12:18 AM
    econometrics
    • Replies: 4
    • Views: 848
    06-13-2016, 09:23 AM Go to last post
  40. Causal mediation analysis with lagged endogeneous regressors

    Hello dear forum members! So, in the study I am currently working on, I have the following (simplified) Poisson panel model with fixed-effects...

    Started by kiton‎, 06-11-2016 03:16 PM
    • Replies: 1
    • Views: 520
    06-12-2016, 11:56 PM Go to last post
  41. Smile Interpret Transformed Independent Variables

    Dear Forum, I ran a logistic regression and one of my Independent variables was transformed with a LG10. I know from normal non transformed...

    Started by beatoctane‎, 06-12-2016 07:22 AM
    • Replies: 1
    • Views: 381
    06-12-2016, 12:15 PM Go to last post
  42. 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: 526
    06-12-2016, 07:32 AM Go to last post
  43. My First Model

    Hello, I am doing a Master's and I am at the dissertation stage, and have to write and test a model empirically. However I am not sure about...

    Started by vt1‎, 06-11-2016 02:29 AM
    elasticity, multiple regressors, non-linear regression, stata
    • Replies: 1
    • Views: 528
    06-11-2016, 01:44 PM Go to last post
  44. Evaluating regression models help

    I'm new to regression and am needing some assistance in evaluating a model. The relationship I'm trying to obtain is the relationship between credit...

    Started by semidevil‎, 06-10-2016 03:56 PM
    • Replies: 0
    • Views: 470
    06-10-2016, 03:56 PM Go to last post
  45. Orthogonal-polynomial contrasts

    Hi there, During my studies, I always learned that, when you have an independent ordinal variable, you could include it into your regression...

    Started by Tux‎, 06-09-2016 04:56 PM
    • Replies: 0
    • Views: 451
    06-09-2016, 04:56 PM Go to last post
  46. Detecting and adjusting for heteroskedasticity in ordinal logistic models

    Does anyone know how to check whether heteroskedasticity is present in an ordinal logistic regression analysis? And, if present, how can it be...

    Started by KV Weyde‎, 06-09-2016 03:13 AM
    • Replies: 0
    • Views: 526
    06-09-2016, 03:13 AM Go to last post
  47. Confidence intervals comparison for linear and quadratic slopes?

    Hello, I am using regression analyses to evaluate changes in several different cognitive functions across the life span. In most cases, the...

    Started by IoMar‎, 06-08-2016 09:09 PM
    • Replies: 0
    • Views: 417
    06-08-2016, 09:09 PM Go to last post
  48. Logistic Regression with interactions and contrasts

    Hello All, I need some advice for choosing the correct model. I have 3 binary variables: Risk (0 = the person doesn't take financial risks, 1 =...

    Started by Yankel‎, 06-07-2016 05:55 AM
    • Replies: 5
    • Views: 1,101
    06-08-2016, 09:37 AM Go to last post
  49. SQReg demonstration

    Hello everyone, i need help with this demonstration: SQReg = B1^2*Sxx Someone can help?

    Started by Calion‎, 06-05-2016 11:35 AM
    • Replies: 1
    • Views: 581
    06-06-2016, 12:22 PM Go to last post
  50. Constant in linear regression

    Hey guys, Need help in Linear regression: I have a dataset of 70 tumors that during resection we used an electric measurement to estimate a...

    Started by XPeriment‎, 06-05-2016 10:47 PM
    • Replies: 0
    • Views: 814
    06-05-2016, 10:47 PM Go to last post
  51. Interpretation of continuous interaction term

    Hi all, I have a question regarding the interpretation of a squared interaction term in the following model: Y=β0+β1X+ β1X^2 + β2Z+ β3 X^2Z ...

    Started by Rene Jansen‎, 06-05-2016 08:13 AM
    continuous moderator, interaction effect, interaction term
    • Replies: 0
    • Views: 639
    06-05-2016, 08:13 AM Go to last post
  52. Question Need help to choose right statistical analysis

    Dear all, I have one dependent variable (Y) and 3 independent variables (X1, X2, X3). All dependent and independent variables are continuous. ...

    Started by tony.adib1984‎, 06-05-2016 03:30 AM
    ancova, anova
    • Replies: 0
    • Views: 370
    06-05-2016, 03:30 AM Go to last post
  53. Interpreting dummy variables.

    I did not create the following variables, the state I worked for did...They have one variable coded W if you are white 0 otherwise. A second variable...

    Started by noetsi‎, 06-04-2016 05:59 PM
    • Replies: 0
    • Views: 595
    06-04-2016, 05:59 PM Go to last post
  54. Beta weights and correlations

    Dear all, I have used regression to explain a dependent variable with a number of independent variables. I expected independent variables which...

    Started by Anthony_1000‎, 06-04-2016 04:05 AM
    beta weights, correlations
    • Replies: 0
    • Views: 419
    06-04-2016, 04:05 AM Go to last post
  55. Logistic regression - basics

    Dearest stat colleagues, I have some basic questions regarding logistic regression that I hope you can help me out with. Iím running a simple...

    Started by Jeff135‎, 05-31-2016 01:39 PM
    • Replies: 4
    • Views: 1,029
    06-01-2016, 06:48 PM Go to last post
  56. How to handle poor reporting unstandardised\standardized coefficients?

    Hi, I have several times problem how to distinguish what is reported in clinical journals in relation to regression analysis. Frequently authors...

    Started by Vlajkony‎, 06-01-2016 05:29 PM
    • Replies: 1
    • Views: 481
    06-01-2016, 05:56 PM Go to last post
  57. Is this Multicollinearity?

    Hi guys, im relatively new in this forum. I have a question, i am using multiple regression analysis for my thesis. The result shows the P-value is...

    Started by LizBeth‎, 05-29-2016 11:04 PM
    • Replies: 8
    • Views: 675
    06-01-2016, 07:44 AM Go to last post
  58. Can we really(theoretically) generalize fixed regressor linear regression?

    If we have stochastic regressors, we are drawing random pairs $(y_i,\vec{x}_i)$ for a bunch of $i$, the so-called random sample, from a fixed but...

    Started by kzhou‎, 05-29-2016 08:52 AM
    fixed regressor, linear regression, stochastic regressor
    • Replies: 3
    • Views: 718
    05-30-2016, 09:16 PM Go to last post
  59. Time-varying covariates in linear mixed models/multilevel models

    Hi! I am a Norwegian phd student exploring the effects of nocturnal road traffic noise exposure in children. One of the research questions is...

    Started by KV Weyde‎, 05-30-2016 04:49 PM
    mixed models, stata, time-varying covariate
    • Replies: 0
    • Views: 1,195
    05-30-2016, 04:49 PM Go to last post
  60. Mediation analysis - an issue of two opposing (contrary) effects

    Hey! I would be very grateful about any advices or comments on an issue I have recently come across. We tested a simple mediation analysis,...

    Started by Martin Marko‎, 05-30-2016 02:52 PM
    • Replies: 0
    • Views: 575
    05-30-2016, 02:52 PM Go to last post

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