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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Cointegration

    Hi guys, 1) I have the time series model y_t = a + bx_t + e_t where y_t and x_t are I(1), and I've been asked to run an ADF test over e_t to...

    Started by derksheng‎, 10-27-2012 05:11 AM
    • Replies: 1
    • Views: 1,343
    10-27-2012, 01:00 PM Go to last post
  2. Collinearity

    Hi, Is there any possibility that if colinearity exists between two or more DV variables in a regression analysis, the regression analysis to be...

    Started by alexandros__23‎, 01-16-2011 03:33 PM
    • Replies: 3
    • Views: 6,052
    01-17-2011, 08:00 AM Go to last post
  3. Collinearity

    I interacted two variables from my data, and I put the newly created variable on the RHS of my model. However it automatically dropped when I ran the...

    Started by Windows7‎, 02-26-2014 07:15 PM
    • Replies: 6
    • Views: 1,639
    03-05-2014, 06:36 PM Go to last post
  4. collinearity - incorrect sign?

    I read from a book that the collinearity (or multicollinearity) could possibly lead the signs of the regression coefficients to being incorrect....

    Started by liamplayt‎, 04-25-2011 10:01 PM
    collinearity, regression
    • Replies: 4
    • Views: 3,259
    04-26-2011, 02:43 AM Go to last post
  5. Collinearity = interaction ?

    Hello everybody I recently learned about interaction in linear regression and I´m having a hard time grasping the concept. As i understand it...

    Started by RorschachDK‎, 07-16-2013 02:53 AM
    • Replies: 0
    • Views: 1,676
    07-16-2013, 02:53 AM Go to last post
  6. Collinearity Among Categorical Variables in Regression

    Does anyone have any knowledge and/or experience in how to measure collinearity between categorical variables that have more than 2 categories in the...

    Started by jastingo‎, 01-21-2012 05:40 PM
    • Replies: 6
    • Views: 34,928
    01-25-2012, 03:52 PM Go to last post
  7. collinearity and Heteroscedasticity in bivariate probit model

    Hi, all I run a bivariate probit regression, and I am not specialized in statistics and I dont know how to check collinearity and...

    Started by momo‎, 10-14-2010 03:32 PM
    • Replies: 0
    • Views: 5,737
    10-14-2010, 03:32 PM Go to last post
  8. Collinearity and MANOVA

    Hi! I've got a problem in my research. We have studied the effect of treatment on gene expression of multiple genes (11). Now we want to...

    Started by Waervyn‎, 04-05-2013 06:15 AM
    • Replies: 0
    • Views: 1,427
    04-05-2013, 06:15 AM Go to last post
  9. Collinearity help

    I saw a suggestion on a web page for dealing with collinearity I had not seen before. http://www2.chass.ncsu.edu/garson/pa765/tacq.htm "Treat...

    Started by mishery‎, 10-25-2005 11:56 AM
    • Replies: 5
    • Views: 5,911
    06-28-2011, 07:51 AM Go to last post
  10. Collinearity in Logistic Regression

    If my independent variables are correlated in Linear Regression, I can first, check it using VIF, and solve it (PLS, other ways). What do I do if...

    Started by WeeG‎, 08-19-2010 04:28 AM
    • Replies: 8
    • Views: 27,169
    08-24-2010, 01:50 AM Go to last post
  11. Collinearity in multivariate regression trees.

    Hi, I m new here and I am looking for help with my analysis. I have performed a multivariate regression tree using 8 variables as response and 10...

    Started by Valreg‎, 10-24-2013 10:42 AM
    • Replies: 0
    • Views: 2,282
    10-24-2013, 10:42 AM Go to last post
  12. Post Comando para correlacion contemporanea (modelo efectos aleatorios

    Buenas noches compañeros, busco un comando para el software stata 13.1, para poder estimar la correlacion contemporanea, para el modelo de efectos...

    Started by Juan Carlos 1991‎, 05-25-2015 09:26 PM
    • Replies: 2
    • Views: 1,676
    05-26-2015, 09:14 AM Go to last post
  13. Combined or separate regressions?

    Dear forumites, I have a (I guess) pretty basic question concerning multiple linear regression. My situation is the following: I have a...

    Started by dgi‎, 09-09-2013 09:35 AM
    • Replies: 2
    • Views: 1,813
    09-16-2013, 10:33 AM Go to last post
  14. Combining data from different sources

    Hi, I have data from two very different sources (bird counts from ships and bird counts from the shore) which aim to estimate the same...

    Started by mmercker‎, 08-19-2016 11:51 AM
    biology, machine learning, model averaging, regression analysis
    • Replies: 2
    • Views: 1,214
    08-19-2016, 01:28 PM Go to last post
  15. combining error terms for two dissimilar regressions

    I have a linear regression for Y on X, and a power regression for Z on Y, each having associated error. (the Y values are different (independent) in...

    Started by George Kraemer‎, 09-21-2017 11:32 AM
    • Replies: 13
    • Views: 476
    09-25-2017, 02:36 PM Go to last post
  16. Combining linear regressions

    I have two variables, x and y, and I am using linear regression to predict y from x over a large set of subjects. There are multiple observations per...

    Started by aix‎, 06-01-2010 02:48 PM
    • Replies: 0
    • Views: 2,994
    06-01-2010, 02:48 PM Go to last post
  17. Combining Model Scores

    Question for the regression modeling experts: I am looking for an efficient and correct way to combine model scores taking into account...

    Started by only1tobin‎, 03-09-2011 04:40 PM
    • Replies: 0
    • Views: 4,578
    03-09-2011, 04:40 PM Go to last post
  18. Unhappy Combining models into single one

    Yi = B0 + (B1X1,i) + (B2X2,i) + ui Yi = A1 + (A2X1,i) + (A3X2,i) + ui How to formulate these two models as one single linear model using the...

    Started by rayshonali90‎, 11-26-2012 10:17 AM
    multivariate analysis, ols
    • Replies: 1
    • Views: 1,366
    11-26-2012, 11:05 AM Go to last post
  19. Combining multiple covariates in a linear regression model

    Hi all, My question pertains to the handling of covariates in a regression analysis. Consider for example that I have three covariates (c1, c2 and...

    Started by tnknox‎, 10-02-2012 06:01 PM
    • Replies: 0
    • Views: 1,312
    10-02-2012, 06:01 PM Go to last post
  20. Combining panel (10 years of data) and survey data (1 year) in one regression

    Quick question regarding a problem I am having: My research explores determinants of municipal recycling behavior, evaluating the effects of...

    Started by caltech27‎, 02-07-2013 01:23 PM
    • Replies: 0
    • Views: 2,530
    02-07-2013, 01:23 PM Go to last post
  21. Combining Prediction Intervals

    I'm having trouble finding how to combine a number of prediction intervals. The best way to explain the problem is: Imagine a race with 4 relay...

    Started by Rob‎, 11-16-2007 11:13 AM
    • Replies: 4
    • Views: 7,861
    07-22-2010, 04:12 PM Go to last post
  22. Combining Regression and PCA scores

    I work in market research, and we're often asked to run regression to determine the impact of various components (like product attributes) on overall...

    Started by Injektilo‎, 12-18-2010 07:07 PM
    • Replies: 1
    • Views: 5,502
    12-19-2010, 06:40 AM Go to last post
  23. Combining regression with time series

    Using an existing time series of supermarket sales data I need to make a forecast. Basically a simple exponential smoothing model explains future...

    Started by kenasto‎, 01-20-2011 09:49 PM
    • Replies: 2
    • Views: 5,634
    04-19-2012, 05:59 AM Go to last post
  24. Red face Combining Regressions

    Hi, I have several different regressions for various sites within an area estimating Y from X. I would like to combine all these sites in to...

    Started by danboyk‎, 12-19-2007 10:01 AM
    • Replies: 3
    • Views: 7,659
    12-28-2007, 11:31 AM Go to last post
  25. Combining Seemingly Unrelated Regression Equations (SURE) with First Difference (FD)

    Hey guys, I would like to estimate an equation system of 4 different equations (industry specific) across 20 countries. For various reasons Im...

    Started by MrPii‎, 04-22-2014 03:54 PM
    • Replies: 0
    • Views: 1,095
    04-22-2014, 03:54 PM Go to last post
  26. Combining several regression

    Sorry for this simple, maybe idiotically so, question :) I'm trying to make a very basic model for basketball, though the sport doesn't really...

    Started by donkstafari‎, 10-13-2013 12:16 PM
    • Replies: 1
    • Views: 1,420
    10-14-2013, 11:24 AM Go to last post
  27. Combining the effect of the linear and the Quadratic terms in Regression

    Hi all, I am running a poisson regression model where I have linear term and quadratic term of time as predictors. When both are significant, can...

    Started by Avatar‎, 06-20-2012 07:39 PM
    • Replies: 5
    • Views: 2,669
    06-21-2012, 11:17 AM Go to last post
  28. Combining Two Samples (one w/ intervention and one w/ out intervention)

    I have a local dataset with a continuous predictor and binary outcome. I will use logistic regression to predict the binary outcome with the...

    Started by hlsmith‎, 05-02-2016 03:50 PM
    • Replies: 7
    • Views: 1,671
    05-02-2016, 10:01 PM Go to last post
  29. Combining variables in SPSS

    I want to combine two variables that have the same level of measurement (5-point scale) in a third one to use it in my regression model, how can I do...

    Started by Elham‎, 11-08-2011 09:02 AM
    • Replies: 0
    • Views: 3,024
    11-08-2011, 09:02 AM Go to last post
  30. Combining variables prior to performing regression analysis

    Hello to all. I am running a regression analysis to evaluate if the joint analysis of costs and benefits can explain medicinal plant selection better...

    Started by patri‎, 05-04-2015 05:20 PM
    combining variables, linear regression, multiple regression, simple regression
    • Replies: 3
    • Views: 1,826
    05-08-2015, 05:01 PM Go to last post
  31. Combining various prediction equations.

    Hello all, I have been looking for a method to combine various linear prediction equations. These equations predict the same quantity but...

    Started by zoulzubazz‎, 06-21-2013 01:01 PM
    • Replies: 5
    • Views: 1,590
    07-05-2013, 12:55 PM Go to last post
  32. Common Factor Restrictions

    Hello, I am currently writing my Master-Thesis and got a problem, which I have been trying to solve for the last three days. I have to conduct a...

    Started by Canu‎, 10-02-2012 03:19 AM
    • Replies: 0
    • Views: 2,460
    10-02-2012, 03:19 AM Go to last post
  33. Common method bias linear regression

    I have an article for resubmission where the reviewer writes: "For example, you could test a CFA model in which you add an orthogonal method...

    Started by Kristina.s‎, 10-25-2013 03:11 PM
    • Replies: 2
    • Views: 2,377
    10-28-2013, 07:03 AM Go to last post
  34. Common Variance as a Separate Variable

    Hi all, I have a regression model exhibiting significant multicollinearity and am trying to figure out how to correct for it, or at least to minimize...

    Started by seanodlum‎, 02-11-2013 02:30 PM
    covariance, linear regression, multicollinearity
    • Replies: 2
    • Views: 1,569
    02-09-2014, 05:16 PM Go to last post
  35. Commonality analyses/structure coefficients/relative importance

    Dear members: I am conducing a 2-way moderation and I would like to determine the meaningful implications of each of my predictors (IV, Moderator,...

    Started by Elena_Iva‎, 12-17-2015 09:34 PM
    • Replies: 0
    • Views: 782
    12-17-2015, 09:34 PM Go to last post
  36. compare beta subgroup from total group - two dummy variables

    My plain regression looks as follows: tendaystockreturn = alpha + beta * dummy variable that takes a value of 1 in case a director purchases...

    Started by smoyf1992‎, 09-04-2014 01:42 PM
    dummy compare inter
    • Replies: 1
    • Views: 2,152
    09-04-2014, 01:47 PM Go to last post
  37. Compare coefficients of two regression models

    Hi, I have a little problem I hope someone can help me with. I run 2 multiple regression models with the same independent variables but...

    Started by Swag1992‎, 04-07-2016 04:15 AM
    • Replies: 1
    • Views: 764
    04-07-2016, 07:10 AM Go to last post
  38. Post Compare Correlation Coefficients

    Hi everyone, I currently have to do an empirical work in Stata and need some help. I have a regression in this form and want to compare the...

    Started by Swag1992‎, 03-22-2016 11:31 AM
    • Replies: 0
    • Views: 773
    03-22-2016, 11:31 AM Go to last post
  39. Compare regression coëfficiënts in 2 models/ same sample, + 1 IV, SPSS

    Dear all, I am doing a master thesis in criminology and am trying to detect confounding effects of response styles on theoretical models....

    Started by Mathis‎, 07-22-2012 06:22 AM
    • Replies: 3
    • Views: 23,547
    07-30-2012, 02:45 PM Go to last post
  40. Compare regression coefficients of two settings with similar samples

    Dear Statisticians, For my thesis I am currently examining whether the accounting principles have an influence on the relation between having a...

    Started by Daniel_W‎, 06-09-2017 03:32 AM
    • Replies: 0
    • Views: 346
    06-09-2017, 03:32 AM Go to last post
  41. compare regression effects nested models

    Dear forum, The following problem is puzzling me for a while. Suppose I have two nested models, where y is the same dependent variable and x1 is...

    Started by benp‎, 05-27-2014 05:13 AM
    effect change controlling
    • Replies: 4
    • Views: 1,860
    05-29-2014, 12:50 PM Go to last post
  42. Compare slopes of multiple regression models - repeated measures at mult conditions

    In an experiment I measured how hard (torque, dependent variable) subjects could push against a plate as it rotated at 4 speeds: stopped, slow,...

    Started by baxterj‎, 08-08-2013 02:12 PM
    • Replies: 3
    • Views: 2,580
    08-09-2013, 12:52 PM Go to last post
  43. compare Spearman's correlations

    Dear all, I performed several Spearman's correlation tests between the same independent variable and different dependent ones. All the...

    Started by marco77‎, 12-05-2011 10:29 AM
    • Replies: 2
    • Views: 3,295
    12-06-2011, 05:07 AM Go to last post
  44. 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: 2,283
    06-26-2016, 12:08 PM Go to last post
  45. comparing "pooled" coefficients between different models

    Dear all, I am running a mediation model with 6 continuous predictors and 2 mediators, separately for boys and girls. I want to test if the...

    Started by ursula1985‎, 05-01-2014 09:42 AM
    coefficients, comparison, regression
    • Replies: 0
    • Views: 1,000
    05-01-2014, 09:42 AM Go to last post
  46. Comparing 2 best fit lines for 2 halves of a data set

    I have a data set with ~200 coordinates plotted on a scatter plot. I can either use the data set as is, or split this plot into two data sets along a...

    Started by player100200‎, 08-25-2014 06:13 PM
    goodness of fit, regression
    • Replies: 0
    • Views: 982
    08-25-2014, 06:13 PM Go to last post
  47. Comparing 2 multiple regression model???

    Hi im new here and to tell the truth i'm still learning about stat and struggling a little bit in my thesis so my question is what should i use is...

    Started by Andy_G‎, 01-10-2013 01:33 PM
    compare regression linear
    • Replies: 5
    • Views: 1,829
    01-11-2013, 09:34 AM Go to last post
  48. Comparing a multiple linear regression model across two groups

    Hi everyone, I've a problem with statistic, which is driving me crazy. I hope someone finds the time to give me a hint or something :) I am...

    Started by omnia‎, 12-26-2012 12:20 PM
    • Replies: 0
    • Views: 2,779
    12-26-2012, 12:20 PM Go to last post
  49. Comparing AIC between OLS and Quantile regression

    Hello all, Is it acceptable to compare the AIC of an OLS linear model to the AIC of a quantile linear model to see which is the better fit? I...

    Started by Frost_Maggot‎, 11-26-2015 12:10 PM
    • Replies: 0
    • Views: 1,036
    11-26-2015, 12:10 PM Go to last post
  50. Comparing beta's of different regression analyses for significance

    Hi all, I have been struggling with this for a while now, so I really hope one of you can help me out: I am trying to compare two different...

    Started by anneb‎, 01-30-2017 02:14 PM
    • Replies: 2
    • Views: 2,049
    01-30-2017, 03:42 PM Go to last post
  51. Question Comparing betas between two separate models

    I have a linear regression model and results for 2001, and 2008. A particular predictor (unemployment rate) is significant in both models (p=0.000)....

    Started by cbaldwin‎, 06-06-2012 11:24 PM
    • Replies: 1
    • Views: 1,580
    06-10-2012, 04:33 AM Go to last post
  52. Comparing betas with log transformation of independent variable

    Hi all, I would like to compare the results of three studies. All use linear regression with continuous independent and dependent variables. The...

    Started by orangetrout‎, 03-30-2016 06:35 AM
    • Replies: 0
    • Views: 1,784
    03-30-2016, 06:35 AM Go to last post
  53. Comparing coefficients across sub-samples/groups with different models

    I have a question in regards of comparing coefficients across sub-samples/groups. Group 1 consists of 400 observations, and Group 2 consists of 2500...

    Started by dunkdrugis‎, 05-15-2014 05:37 AM
    • Replies: 1
    • Views: 1,136
    05-15-2014, 06:11 AM Go to last post
  54. Comparing coefficients for nested logistic regressions

    Hi, maybe one out there can help. I am interested in comparing the coefficients of two binary logistic models. In one nested in the other one,...

    Started by dnh‎, 11-22-2010 04:09 PM
    • Replies: 9
    • Views: 4,457
    11-24-2010, 08:45 AM Go to last post
  55. Comparing Coefficients from Different Regression Models

    I'm evaluating two (2) refrigerants (gases) that were used in the same refrigeration system. I have saturated suction temperature (S), condensing...

    Started by gth826a‎, 06-18-2014 09:11 AM
    • Replies: 0
    • Views: 1,360
    06-18-2014, 09:11 AM Go to last post
  56. Comparing Coefficients from Different Samples

    Is it appropriate to compare regression coefficients from two different samples using a classic z-test (z= Beta1-Beta2 /SE of Difference)? In...

    Started by rags23‎, 12-03-2013 02:52 PM
    • Replies: 0
    • Views: 2,465
    12-03-2013, 02:52 PM Go to last post
  57. Comparing coefficients from two separate regressions

    I have done my best to do an extensive literature review to answer this question, but I've frustratingly found nothing. So I would appreciate any...

    Started by dlh8‎, 02-09-2014 08:35 PM
    3 Pages
    1 2 3
    • Replies: 33
    • Views: 6,430
    02-18-2014, 03:01 PM Go to last post
  58. Comparing coefficients in Logistic Regression

    Hello ! I would like to have guidance on what follows. I was fitting a Logistic Regression model, and I got the coefficients for the model's...

    Started by gianmarco‎, 07-29-2014 07:08 AM
    • Replies: 14
    • Views: 9,048
    06-02-2015, 09:08 AM Go to last post
  59. Comparing coefficients in Seemingly Unrelated Regressions

    Hello I have a panel data set and have estimated two regression models with the same set of independent variables but different response variable. I...

    Started by niamyara‎, 10-22-2012 12:28 PM
    comparing coefficients
    • Replies: 0
    • Views: 2,499
    10-22-2012, 12:28 PM Go to last post
  60. Comparing coefficients on two same DV same IV models

    I'm running regressions on two models using the same (8) independent and dependent variables. The dependent variable in the two models spans two...

    Started by robin772‎, 09-18-2013 10:54 AM
    • Replies: 3
    • Views: 3,137
    09-19-2013, 09:58 AM Go to last post

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