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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. 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 10:55 AM
    • Replies: 8
    • Views: 609
    07-07-2016, 10:02 AM Go to last post
  2. 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 08:08 AM
    • Replies: 0
    • Views: 200
    07-07-2016, 08:08 AM Go to last post
  3. 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 03:57 PM
    glm assumptions, glm diagnostocs, normality, qq-plot
    • Replies: 8
    • Views: 687
    07-06-2016, 08:59 PM Go to last post
  4. 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 10:10 AM
    • Replies: 6
    • Views: 504
    07-04-2016, 11:26 PM Go to last post
  5. 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 01:33 PM
    • Replies: 0
    • Views: 307
    07-03-2016, 01:33 PM Go to last post
  6. 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 08:03 AM
    binary response models, mle, ols
    • Replies: 8
    • Views: 635
    07-02-2016, 01:47 PM Go to last post
  7. 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 09:09 AM
    regression coefficients
    • Replies: 5
    • Views: 409
    07-01-2016, 04:10 PM Go to last post
  8. 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 04:56 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 1,057
    06-30-2016, 03:24 PM Go to last post
  9. 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 08:09 AM
    generalized linear model, interaction effect
    • Replies: 1
    • Views: 295
    06-29-2016, 08:54 AM Go to last post
  10. 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: 1,125
    06-28-2016, 04:14 PM Go to last post
  11. 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 10:45 AM
    • Replies: 2
    • Views: 317
    06-28-2016, 02:45 PM Go to last post
  12. 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 03:45 PM
    • Replies: 9
    • Views: 540
    06-27-2016, 06:48 PM Go to last post
  13. 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 12:56 PM
    glm
    • Replies: 3
    • Views: 427
    06-27-2016, 12:11 PM Go to last post
  14. 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 06:30 PM
    • Replies: 9
    • Views: 792
    06-27-2016, 12:02 PM Go to last post
  15. 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, 06-27-2016 12:28 AM
    • Replies: 0
    • Views: 264
    06-27-2016, 12:28 AM Go to last post
  16. 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 07:40 AM
    logit regression, regresion, test statistic
    • Replies: 5
    • Views: 529
    06-26-2016, 01:08 PM Go to last post
  17. 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 05:53 PM
    parameter estimation, regression model
    • Replies: 5
    • Views: 428
    06-26-2016, 05:18 AM Go to last post
  18. 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 11:27 AM
    count regressors, panel model
    • Replies: 0
    • Views: 209
    06-25-2016, 11:27 AM Go to last post
  19. 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 04:02 AM
    regresion, variance
    • Replies: 0
    • Views: 250
    06-24-2016, 04:02 AM Go to last post
  20. 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 09:13 AM
    • Replies: 0
    • Views: 297
    06-22-2016, 09:13 AM Go to last post
  21. 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 09:40 AM
    • Replies: 0
    • Views: 246
    06-21-2016, 09:40 AM Go to last post
  22. 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 11:08 PM
    • Replies: 7
    • Views: 1,577
    06-20-2016, 07:48 PM Go to last post
  23. 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 11:50 PM
    • Replies: 3
    • Views: 626
    06-20-2016, 01:23 PM Go to last post
  24. 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 01:13 AM
    • Replies: 2
    • Views: 366
    06-20-2016, 03:41 AM Go to last post
  25. 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 10:01 PM
    • Replies: 5
    • Views: 434
    06-19-2016, 07:58 PM Go to last post
  26. 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 08:57 AM
    gls, ols, pooled
    • Replies: 0
    • Views: 340
    06-18-2016, 08:57 AM Go to last post
  27. 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 04:33 PM
    • Replies: 3
    • Views: 494
    06-17-2016, 01:23 PM Go to last post
  28. 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: 199
    06-17-2016, 12:58 PM Go to last post
  29. Regression Analysis from R output

    plz delete this thread.

    Started by absxneverdie‎, 06-17-2016 10:50 AM
    • Replies: 0
    • Views: 272
    06-17-2016, 10:50 AM Go to last post
  30. 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 07:44 AM
    interaction, interpretation, likert, moderation, regression
    • Replies: 1
    • Views: 347
    06-17-2016, 05:42 AM Go to last post
  31. 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 09:31 PM
    • Replies: 1
    • Views: 311
    06-16-2016, 10:12 PM Go to last post
  32. 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 12:00 PM
    • Replies: 5
    • Views: 469
    06-14-2016, 08:18 AM Go to last post
  33. Multiple Regression Analysis - Two independent variables, one w/same values

    Post closed.

    Started by ablong‎, 06-13-2016 01:18 AM
    econometrics
    • Replies: 4
    • Views: 381
    06-13-2016, 10:23 AM Go to last post
  34. 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 04:16 PM
    • Replies: 1
    • Views: 286
    06-13-2016, 12:56 AM Go to last post
  35. 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 08:22 AM
    • Replies: 1
    • Views: 261
    06-12-2016, 01:15 PM Go to last post
  36. 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 08:32 AM
    • Replies: 0
    • Views: 263
    06-12-2016, 08:32 AM Go to last post
  37. 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 03:29 AM
    elasticity, multiple regressors, non-linear regression, stata
    • Replies: 1
    • Views: 338
    06-11-2016, 02:44 PM Go to last post
  38. 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 04:56 PM
    • Replies: 0
    • Views: 261
    06-10-2016, 04:56 PM Go to last post
  39. 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 05:56 PM
    • Replies: 0
    • Views: 212
    06-09-2016, 05:56 PM Go to last post
  40. 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 04:13 AM
    • Replies: 0
    • Views: 242
    06-09-2016, 04:13 AM Go to last post
  41. 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 10:09 PM
    • Replies: 0
    • Views: 232
    06-08-2016, 10:09 PM Go to last post
  42. 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 06:55 AM
    • Replies: 5
    • Views: 593
    06-08-2016, 10:37 AM Go to last post
  43. SQReg demonstration

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

    Started by Calion‎, 06-05-2016 12:35 PM
    • Replies: 1
    • Views: 361
    06-06-2016, 01:22 PM Go to last post
  44. 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 11:47 PM
    • Replies: 0
    • Views: 263
    06-05-2016, 11:47 PM Go to last post
  45. 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 09:13 AM
    continuous moderator, interaction effect, interaction term
    • Replies: 0
    • Views: 322
    06-05-2016, 09:13 AM Go to last post
  46. 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 04:30 AM
    ancova, anova
    • Replies: 0
    • Views: 214
    06-05-2016, 04:30 AM Go to last post
  47. 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 06:59 PM
    • Replies: 0
    • Views: 233
    06-04-2016, 06:59 PM Go to last post
  48. 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 05:05 AM
    beta weights, correlations
    • Replies: 0
    • Views: 215
    06-04-2016, 05:05 AM Go to last post
  49. 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 02:39 PM
    • Replies: 4
    • Views: 492
    06-01-2016, 07:48 PM Go to last post
  50. 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 06:29 PM
    • Replies: 1
    • Views: 288
    06-01-2016, 06:56 PM Go to last post
  51. 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, 05-30-2016 12:04 AM
    • Replies: 8
    • Views: 417
    06-01-2016, 08:44 AM Go to last post
  52. 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 09:52 AM
    fixed regressor, linear regression, stochastic regressor
    • Replies: 3
    • Views: 428
    05-30-2016, 10:16 PM Go to last post
  53. 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 05:49 PM
    mixed models, stata, time-varying covariate
    • Replies: 0
    • Views: 388
    05-30-2016, 05:49 PM Go to last post
  54. 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 03:52 PM
    • Replies: 0
    • Views: 202
    05-30-2016, 03:52 PM Go to last post
  55. out of sample

    Hi There I have 2500 data with 2 sample. one index and another stock. i've done goodness of fit and regression analysis on it.now I've been asked to...

    Started by Zore‎, 05-25-2016 09:36 PM
    • Replies: 3
    • Views: 328
    05-30-2016, 08:05 AM Go to last post
  56. Why do you subtract the mean of a predictor variable from that variable..

    An author using temperature as a predictor subtracted its mean value from each temperature data point to deal with "scaling issues." I don't...

    Started by noetsi‎, 05-28-2016 02:10 PM
    • Replies: 5
    • Views: 453
    05-29-2016, 12:33 PM Go to last post
  57. Optimal cut-off from ROC

    Hello, as you know, ROC curve is not depend of the cut-off. But how can I get an "optimal" cut-off from ROC curve? Example: I have a database...

    Started by tradermartin‎, 05-25-2016 04:34 AM
    • Replies: 4
    • Views: 370
    05-26-2016, 02:53 PM Go to last post
  58. Angry Violation of linearity assumptions - binary logistic regression - what to do?

    I am running a binary logistic regression with SPSS and unfortunately the assumption of linearity (Box-Tidwell procedure) are not met for the...

    Started by beatoctane‎, 05-22-2016 06:18 AM
    • Replies: 10
    • Views: 739
    05-26-2016, 02:46 PM Go to last post
  59. Relative impact of variables on DV

    I keep circling back to this issue, this time with a twist. I am arguing with some sports statisticians (who use statistics very differently than the...

    Started by noetsi‎, 05-26-2016 10:01 AM
    • Replies: 1
    • Views: 247
    05-26-2016, 02:18 PM Go to last post
  60. Multiple linear regression: square root transformation of predictor variable

    I have used a square root transformation to successfully correct the positive skew of a predictor variable in a hierarchical multiple linear...

    Started by carswa‎, 05-25-2016 04:38 PM
    • Replies: 0
    • Views: 297
    05-25-2016, 04:38 PM Go to last post

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