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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. RMA regression

    Hello! I'm trying to fit regression as a modeling approach between predictor variables (radiation, temperature, relative humidity, etc.) and...

    Started by ekullaj‎, 05-21-2013 03:18 PM
    rma or ols regression
    • Replies: 0
    • Views: 2,708
    05-21-2013, 03:18 PM Go to last post
  2. How do you intrepret coefficients in logistic regression?

    I am studying whether opinion polls predict presidential elections in one course project. The data I have is of following kind. I have a binary...

    Started by El Pollo‎, 10-07-2013 05:14 PM
    • Replies: 3
    • Views: 2,481
    10-08-2013, 04:35 AM Go to last post
  3. Multiple Regression Equation.

    Can someone please tell me if this if correct or not. I'm such an idiot. if i have coefficients of : intercept = -17.514 Food =-0.351...

    Started by el1‎, 05-29-2008 07:57 PM
    • Replies: 0
    • Views: 2,603
    05-29-2008, 07:57 PM Go to last post
  4. Exclamation Help! my model isn't predicting any yes outcomes and don't know why

    I am producing a logistical regression analysis to find a model to predict whether someone has minor mental health problems or not. I'm almost...

    Started by el89‎, 04-19-2012 08:58 PM
    help me!, logisitic regression, prediction errors, predictive model, regression analysis
    • Replies: 9
    • Views: 2,047
    04-20-2012, 02:57 AM Go to last post
  5. Statistic question in a simple marketing implementation?

    Hello, I know this question can be too simple for this forum, but Im new here and was not sure where to post. I'm trying to build model for a...

    Started by elad‎, 12-12-2010 11:23 AM
    • Replies: 0
    • Views: 2,135
    12-12-2010, 11:23 AM Go to last post
  6. WLS Regression Weights

    I am working on a problem for which I need to do a multiple regression that involves a dependent variable and two independent variables. The...

    Started by elanmorin‎, 06-16-2012 02:08 PM
    • Replies: 0
    • Views: 3,335
    06-16-2012, 02:08 PM Go to last post
  7. Source for WLS Regression

    I'm working on a paper in which I run a study using a WLS regression methodology. I understand conceptually how it works and can run it easily in R....

    Started by elanmorin‎, 08-01-2013 11:10 AM
    regression, weighted least squares, wls
    • Replies: 0
    • Views: 1,000
    08-01-2013, 11:10 AM Go to last post
  8. multiple regression and mediators

    Hi I have 10 independent variables and 1 dependent variable. Of the 10 i have selected 4 variables as my predictors for my multiple regression. I...

    Started by eleanor_rigby‎, 05-01-2012 06:52 AM
    • Replies: 4
    • Views: 3,931
    05-02-2012, 05:57 AM Go to last post
  9. Logistic regression using dummies with dependent "holes"

    Hi, I'm trying to do do a logistic regression using R. I want to regress using binary dependent variable Y as granted or not grated (1 or 0)...

    Started by Elekko‎, 03-24-2015 06:15 PM
    dummy variable, interactive dummy, logistical regresion, missing value
    • Replies: 0
    • Views: 1,363
    03-24-2015, 06:15 PM Go to last post
  10. 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: 778
    12-17-2015, 09:34 PM Go to last post
  11. 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: 3,449
    11-02-2011, 01:36 PM Go to last post
  12. 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: 3,022
    11-08-2011, 09:02 AM Go to last post
  13. 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: 2,114
    02-08-2017, 10:20 PM Go to last post
  14. Multiple regression analysis-coefficient table

    Hi, I am currently working on a project which requires a multiple regression analysis (using enter-standard method) and I am stuck with...

    Started by Elina‎, 11-22-2013 11:35 AM
    • Replies: 5
    • Views: 1,908
    11-22-2013, 04:55 PM Go to last post
  15. Linear regression, nonlinear regression or something else?

    Hi! I do apologies in advance for any misuse of terms or the lack of understanding in statistics - as I've only realised, after Googling for hours,...

    Started by elispene‎, 03-16-2011 10:56 PM
    • Replies: 0
    • Views: 3,619
    03-16-2011, 10:56 PM Go to last post
  16. Interpreting White test for heteroskedasticity

    Hello, i am using Gretl software and run a OLS regression on a set of panel data. I am trying to find out if there is hetereskedasticity in the...

    Started by elkomaro‎, 12-10-2013 06:23 PM
    gretl, heteroskedasticity, white test
    • Replies: 1
    • Views: 22,812
    12-10-2013, 06:49 PM Go to last post
  17. Regression analysis with categorical variables

    Hey everyone, I have a problem. For a research project I have to investigate statistically if some some variables correlate with eachother (i.e....

    Started by EllaLynn‎, 05-16-2014 07:33 AM
    • Replies: 1
    • Views: 1,172
    05-16-2014, 07:56 AM Go to last post
  18. [SOLVED] How to interpret negative regression estimate?

    Hi, Im learning about regression analysis and have negative estimates for the grade-point average variable in two categories of a multinomial...

    Started by elle-mnop‎, 02-02-2012 05:50 PM
    • Replies: 10
    • Views: 4,792
    02-03-2012, 03:10 AM Go to last post
  19. Exclamation please help : modelization

    Hello, I have a distribution which looks like a Khi-2 distribution, which model is most appropriate? I try linear regression, but normal...

    Started by elle1301‎, 07-21-2016 04:14 AM
    khi-2, regression
    • Replies: 5
    • Views: 1,734
    07-22-2016, 03:13 AM Go to last post
  20. Ordered Probit Model

    I am using the ordered probit model in my regression, and I have some questions. 1. What are the basic assumptions? 2. which tests should be run?...

    Started by Ellinor Hjelvik‎, 06-03-2015 07:29 PM
    • Replies: 0
    • Views: 1,507
    06-03-2015, 07:29 PM Go to last post
  21. Violation of linearity assumption

    Hi, I'm a beginner at statistics. I'm doing a simple linear regression and I have a scatterplot of the residuals versus the predicted values and I...

    Started by Elodin‎, 03-07-2013 03:15 PM
    • Replies: 10
    • Views: 4,708
    03-09-2013, 10:47 AM Go to last post
  22. Regression analysis with independant variable (error) and multiple dependant variable

    So I took a lot of data (~10000) on a machine (3D printer). For each reading, I got the error and a lot of different parameter (speed, voltage,...

    Started by Elok‎, 11-18-2014 01:25 PM
    2 Pages
    1 2
    linearity, regression analysis
    • Replies: 26
    • Views: 6,575
    11-21-2014, 08:24 AM Go to last post
  23. Coefficients of delta-lognormal modeling

    I am trying to understand delta-lognormal modeling. Please bear with me. I am applying this method to some fishery data. This method combines...

    Started by elopomorph‎, 06-25-2011 06:27 PM
    delta lognormal
    • Replies: 2
    • Views: 3,964
    03-16-2012, 11:38 AM Go to last post
  24. warning at logistic reg.

    Hello, I am trying to do logistic regression analysis. The problem I face is that this warning comes out in my output : Due to redundancies,...

    Started by elpaki‎, 03-08-2012 06:51 AM
    • Replies: 0
    • Views: 2,628
    03-08-2012, 06:51 AM Go to last post
  25. [newbie dumb question] Why is that the assumption of E(u)=0 essential for interences?

    If E(u)=0 is violated, how would it affect the inference of parameters, such as by using t-statistics? My understanding is that if E(u)=0 is...

    Started by elton.li‎, 02-09-2011 06:02 PM
    • Replies: 3
    • Views: 5,348
    02-10-2011, 12:27 AM Go to last post
  26. two ANOVAs, which to use?

    Hypothetical: you have ANOVA tables from two regressions. One is regressed on more variables than the other. The one with more variables, has a low...

    Started by el_presidente_psych‎, 12-12-2011 10:16 AM
    • Replies: 6
    • Views: 2,528
    12-13-2011, 10:12 AM Go to last post
  27. Clustered Robust SEs or Multilevel Modeling approach? HELP NEEDED :-)

    Hello everyone, I would love to hear your quick reaction to a particular data structure my colleagues and I are working with because we keep...

    Started by ema2146‎, 03-31-2014 09:45 AM
    • Replies: 7
    • Views: 1,803
    04-01-2014, 10:13 AM Go to last post
  28. How do I estimate sales given a multiple regression?

    Hi, I'm doing a problem that involves multiple regression. The question asks me to make an estimate of future sales for 15 stores for 2004, given a...

    Started by Emawk‎, 06-05-2006 06:29 PM
    • Replies: 0
    • Views: 2,923
    06-05-2006, 06:29 PM Go to last post
  29. Multiple linear regression + QQplots problem! Includes Pics!

    Hello I want to do multiple linear regression, but one of the requirements is the residuals to be normally distributed, and I can check that with...

    Started by emelie_earlgrey‎, 11-25-2010 01:58 PM
    • Replies: 3
    • Views: 3,054
    11-30-2010, 12:34 PM Go to last post
  30. Binomial regression with x as the dependent variable and n as an independent variable

    Hi all I have a sample size of 100. Out of 100 a certain number are successful at stage one. Of those successful at stage one some are successful...

    Started by emily.stats‎, 03-05-2012 04:24 PM
    2 Pages
    1 2
    binomial, challenge
    • Replies: 15
    • Views: 4,375
    03-08-2012, 05:59 PM Go to last post
  31. Generalised linear model vs transpose data and the general linear model

    Could someone please explain the difference in technical terms between a generalised linear model with the appropriate link function and applying a...

    Started by emily.stats‎, 02-13-2014 09:40 AM
    • Replies: 0
    • Views: 1,177
    02-13-2014, 09:40 AM Go to last post
  32. Regression of calories consumed and body weight

    So I want to understand whether the relationship between calories consumed and body weight differs between males and females. I have data from 20...

    Started by emily.stats‎, 07-17-2014 10:09 AM
    • Replies: 2
    • Views: 918
    07-17-2014, 10:30 AM Go to last post
  33. Analysis of Data over time?

    Hi! I am investigating animal social networks and I have long term data set spanning 15 years. I have looked at each animals 'network position'...

    Started by Emma2415‎, 12-13-2010 06:31 AM
    • Replies: 0
    • Views: 3,211
    12-13-2010, 06:31 AM Go to last post
  34. 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: 1,974
    09-13-2011, 08:21 AM Go to last post
  35. Linear regression - missing data

    Hi, I am running a multiple linear regression which seems to be working well except for one problem: One of the explanatory variables is: does...

    Started by Emma93‎, 07-08-2014 02:46 AM
    • Replies: 0
    • Views: 982
    07-08-2014, 02:46 AM Go to last post
  36. Help with understanding logit coefficient

    Hi everyone, I'm very new to statistics and I would very much appreciate any help you can give me in understanding the coefficients in a logit model....

    Started by EmmaWalfer‎, 03-23-2013 04:10 PM
    • Replies: 7
    • Views: 1,973
    03-28-2013, 10:19 AM Go to last post
  37. 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: 3,796
    11-23-2009, 09:13 PM Go to last post
  38. Need help - what model, what analysis?

    Hi all, please somebody help give me some direction... I have worked long and hard at trying to figure this out for days so please realize I'm not...

    Started by Empathy‎, 12-14-2009 04:53 PM
    • Replies: 1
    • Views: 2,277
    12-14-2009, 05:00 PM Go to last post
  39. The absolute dependence in panel data

    Hello, I want to ask something related to the panel data analysis. In traditional regression and correlation analysis, it is clear that if the...

    Started by enchoj‎, 08-13-2014 03:55 AM
    • Replies: 1
    • Views: 1,202
    08-15-2014, 01:39 AM Go to last post
  40. 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: 1,577
    06-18-2016, 07:57 AM Go to last post
  41. 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: 1,075
    06-21-2016, 08:40 AM Go to last post
  42. 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: 2,050
    07-02-2016, 12:47 PM Go to last post
  43. Linear Regression modeling on Graphics Cards: Am I missing something?

    :wave: I am trying to understand how to choose a graphics card based on a price to performance value for each card. I have a number of...

    Started by Engineiro‎, 12-22-2012 12:51 PM
    cards, graphics, linear regression
    • Replies: 2
    • Views: 1,809
    12-22-2012, 03:31 PM Go to last post
  44. Regression on count data

    Is it a problem if different observations have different "birth times"? If we want to predict mean count per month (via poisson regression for...

    Started by Englund‎, 05-08-2014 11:47 PM
    • Replies: 9
    • Views: 2,027
    05-12-2014, 11:01 PM Go to last post
  45. Post Autoregression model implementation

    Hello forum users! I have a urgent question :/ I need to implement an AR(1) Model into Oxmetrics. Optimize my parameters using the OLS method. ...

    Started by Enies‎, 01-22-2014 01:20 PM
    ar model, ols, oxmetrics
    • Replies: 0
    • Views: 1,575
    01-22-2014, 01:20 PM Go to last post
  46. More than 1 squared term in a regression equation?

    If I have a multiple regression model in which there are more than 1 or 2 terms that are non-linear with the dependent variable Y, then what can I do...

    Started by enman‎, 10-19-2007 11:34 AM
    • Replies: 0
    • Views: 2,887
    10-19-2007, 11:34 AM Go to last post
  47. Unhappy Assessing SSE(sum of squared errors)?

    Hello, I can't figure out how to solve this question: Consider these summary statistics for a random sample: Mean of x=20 Mean of y=10...

    Started by Enricus‎, 03-24-2013 12:04 AM
    • Replies: 3
    • Views: 2,044
    03-24-2013, 03:27 PM Go to last post
  48. Geographically weighted regression (GWR)

    Hi, I am looking for some info on possibility of making a GW regression with a dependent variable as floating point numbers and independent...

    Started by Entomo‎, 02-02-2010 05:45 AM
    • Replies: 0
    • Views: 2,775
    02-02-2010, 05:45 AM Go to last post
  49. Variance inflation and interactions between variables?

    Hello everyone I am having trouble interpreting some of my results. I am using logistic regression to infer a model based on measured data....

    Started by enur‎, 08-03-2012 09:54 AM
    categorical data, gvif, interaction terms, logistic regression, vif
    • Replies: 8
    • Views: 13,789
    01-05-2015, 01:34 PM Go to last post
  50. Heteroscedasticity

    Hello, I've done a search on this but have not found any similar threads. Using EVIEWS White test I have identified heteroscedasticity in my...

    Started by Epsilon‎, 01-08-2011 02:08 PM
    • Replies: 1
    • Views: 4,754
    01-09-2011, 01:44 PM Go to last post
  51. Regression analysis : with ranking data

    In my survey I have independent variables of age , sex and length of membership I have then have a question where I ask participants to rank 5...

    Started by Epy‎, 08-24-2016 12:21 AM
    • Replies: 2
    • Views: 1,297
    08-24-2016, 04:21 AM Go to last post
  52. Difference-in-difference regression

    Hello, I have a problem with my current research project and I am not very experienced with statistics so it would be great to find some help...

    Started by ERa‎, 08-16-2015 01:46 AM
    difference in difference, difference-in-difference, ols, ols regression, regression
    • Replies: 0
    • Views: 1,219
    08-16-2015, 01:46 AM Go to last post
  53. Partial Linear Regression

    I have an S shaped (sigmoid) curve with moderate noise and I need to estimate the slope of the straight line segment around the hypothetical...

    Started by ercolino‎, 08-06-2013 09:09 PM
    • Replies: 10
    • Views: 2,439
    08-27-2013, 06:06 AM Go to last post
  54. Generalized Linear Mixed Models without mixed effects. A meaningless question?

    Hi there, I know what fixed and random effects in linear models or GLM are. I am using Generalized Linear Mixed Models (GLMM) to handle this. So...

    Started by eric1708‎, 03-23-2015 09:00 AM
    fixed effect, glmm, random effect, terminology
    • Replies: 3
    • Views: 1,353
    03-23-2015, 09:02 PM Go to last post
  55. Time series help, Derive COV in a random walk process

    I could use some help deriving the covariance between Y_t and Y_t+h given the random walk process Y_t = Y_t-1+e_t And also the correlation...

    Started by eric89‎, 01-30-2013 12:22 PM
    correlation, covariance, lagged effects, random walk, time series
    • Replies: 3
    • Views: 1,706
    01-31-2013, 11:52 AM Go to last post
  56. Multiple linear regression vs logistic regression

    I am not a statistician myself, and haven't done regressions for very long time and have a basic question. I need to do multiple regression for...

    Started by EricaW‎, 12-28-2014 03:30 PM
    • Replies: 5
    • Views: 2,475
    12-29-2014, 08:18 PM Go to last post
  57. Using pooled OLS when running a model with panel data?

    How bad is it to use pooled OLS instead of fixed effects when you have 7 years of panel data? From what I have understood, the risk is that the...

    Started by Eric_B‎, 06-18-2014 04:23 AM
    • Replies: 1
    • Views: 6,213
    07-12-2014, 06:46 AM Go to last post
  58. 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: 1,625
    06-29-2016, 07:54 AM Go to last post
  59. Question [stata] interaction terms in conditional logit

    Dear all, There is a famous paper by Norton et al. (2003) which describes why stata's wrong about interaction terms in logit regressions. They...

    Started by Erold‎, 05-07-2014 09:08 AM
    buis, interaction term, logit, norton
    • Replies: 2
    • Views: 3,643
    05-08-2014, 04:23 AM Go to last post
  60. zero-inflated count data

    I want to do a regression where both the response and an explanatory variable are zero-inflated counts. It's fairly straightforward to do a ZIP...

    Started by erz‎, 07-11-2012 04:30 PM
    • Replies: 1
    • Views: 1,736
    07-11-2012, 05:35 PM Go to last post

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