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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Negative Binomial Regression - Is this scatterplot okay (pic)?

    Hi there, One assumption of negative-binomial regression is linearity. I have this scatterplot of IV and DV? Would you say that there is...

    Started by Franziska13‎, Yesterday 08:18 AM
    • Replies: 3
    • Views: 127
    Today, 09:37 AM Go to last post
  2. % dependent and independent variables

    Hi all is a linear regression model appropriate when both the dependent and independent variables are % values of the total population in any given...

    Started by ldarley‎, Yesterday 01:48 PM
    • Replies: 0
    • Views: 107
    Yesterday, 01:48 PM Go to last post
  3. Statistical proofs for experts

    Hello community. Is anyone expert enough to find the solutions to these two problems?

    Started by l2vanir‎, 03-25-2017 03:50 PM
    • Replies: 2
    • Views: 186
    03-26-2017, 11:41 AM Go to last post
  4. Heteroskedasticity

    I found heteroskedasticity in my data and I took the log for my dependent variable in SPSS. My independent variables are dummies). To be sure I...

    Started by Jazz3‎, 03-24-2017 12:30 PM
    • Replies: 7
    • Views: 223
    03-26-2017, 06:47 AM Go to last post
  5. SPSS is kicking out my variables [regression]

    So I am doing a multiple regression, with some independent variables. For control variables, I created dummies for the years. I have five years...

    Started by Jazz3‎, 03-21-2017 11:38 AM
    • Replies: 8
    • Views: 257
    03-24-2017, 10:59 AM Go to last post
  6. Unhappy I need help with my regression analysis for research capstone.

    Hi all, I'm new to regressions and also new to posting here. My topic is: How have E-books Affected College Textbook Prices? My hypothesis...

    Started by tlowe‎, 03-22-2017 02:59 PM
    • Replies: 9
    • Views: 261
    03-23-2017, 08:45 AM Go to last post
  7. What do you do it you can't increase X by one level while holding all other X constan

    Classical regression defines the slope as the change in Y for a one unit change in X holding all other X constant (or so I believe). :p What happens...

    Started by noetsi‎, 03-22-2017 12:36 PM
    • Replies: 7
    • Views: 175
    03-22-2017, 06:19 PM Go to last post
  8. Multiple regression analysis: linear or logistic?

    Hello! I have a question regarding multiple regression analysis: for numerical variable I should use linear regression and for dichotomous...

    Started by lacri‎, 03-21-2017 01:51 PM
    • Replies: 1
    • Views: 131
    03-21-2017, 04:18 PM Go to last post
  9. How to choose best robust regression model?

    Hello. There are several robust regression methods like LAR-(aka LAV-, LAD-, L1-Norm-)Regression, Quantil-Regression, M-Estimator, ... They are...

    Started by consuli‎, 02-25-2017 07:01 AM
    2 Pages
    1 2
    robust
    • Replies: 15
    • Views: 896
    03-21-2017, 02:05 PM Go to last post
  10. lg10 versus ln

    Hi there, I have a log transformation question. At school, we always used the ln() function in SPSS, but I recently found out that there is a...

    Started by Jazz3‎, 03-21-2017 10:13 AM
    • Replies: 3
    • Views: 102
    03-21-2017, 11:25 AM Go to last post
  11. Smile Panel study, multiple linear regression, assumptions

    Hey. I am doing a project where I am studying a set of companies over a 7-year period. I am doing a multiple linear regression analysis either...

    Started by monsmatglad‎, 03-21-2017 05:54 AM
    assumptions/requirements, linear, multiple regression, panel study
    • Replies: 0
    • Views: 79
    03-21-2017, 05:54 AM Go to last post
  12. log transformations

    This has confused me for years. Commonly in financial analysis you log Y or sometimes an X. I have never been sure if when you log Y you have to...

    Started by noetsi‎, 03-20-2017 02:22 PM
    • Replies: 5
    • Views: 153
    03-20-2017, 03:08 PM Go to last post
  13. Instrumental variables in system of equation

    Hi everybody, I have a simultaneous equation model in which I want to forecast long term rates in USA and Europe with Eviews. I want to use TLS to...

    Started by pgrign‎, 03-20-2017 10:12 AM
    • Replies: 0
    • Views: 102
    03-20-2017, 10:12 AM Go to last post
  14. Multiple regression analysis: multicollinearity problem

    Dear For my research I'm using interactions in a multiple regression analysis to test the influence of the IV on the DV with moderators. My...

    Started by Hypnoz‎, 03-12-2017 07:44 AM
    • Replies: 12
    • Views: 437
    03-19-2017, 02:14 PM Go to last post
  15. When log transformation

    Hello, I am a bit confused with WHY and WHEN you should take the log of the dependent variable and/or independent variables, after running a...

    Started by Jazz3‎, 03-14-2017 12:20 PM
    • Replies: 4
    • Views: 204
    03-17-2017, 08:23 AM Go to last post
  16. Multi-Stage models: How to do it in practice?

    Dear all, I need help with understanding the approach of so called "Multi-Stage modeling". I encountered a paper/research related to comparison of...

    Started by tradermartin‎, 03-15-2017 04:02 AM
    • Replies: 0
    • Views: 146
    03-15-2017, 04:02 AM Go to last post
  17. Relative impact of an X on Y.

    This is probably the most important question I get asked to do, and I have never found a great answer for it (of course there may not be one). If you...

    Started by noetsi‎, 03-13-2017 10:33 AM
    2 Pages
    1 2
    • Replies: 17
    • Views: 435
    03-14-2017, 03:32 PM Go to last post
  18. 2 or more type of categorical variable with multinomial logistic regression

    Dear sir Good evening from Japan I would like to know about usage of multinomial logistic regression In my analysis have different type of (2...

    Started by yawai‎, 03-14-2017 08:47 AM
    • Replies: 0
    • Views: 116
    03-14-2017, 08:47 AM Go to last post
  19. White Test Panel Data EVIEWS 9

    https://www.youtube.com/watch?v=UvtjXL22iCE Illustration of tests for heteroskedasticity (White Test) Panel Data in EVIEWS 9 And White's...

    Started by willylexander‎, 03-14-2017 05:27 AM
    • Replies: 0
    • Views: 109
    03-14-2017, 05:27 AM Go to last post
  20. Exclamation How to run AIC and Logit on Panel Data?

    I've data for 10 banks over a period of last 10 years. I've financial ratios for each bank corresponding to each financial year. There are 20 such...

    Started by AbMeena‎, 03-14-2017 05:03 AM
    aic, econometrics, regression
    • Replies: 0
    • Views: 106
    03-14-2017, 05:03 AM Go to last post
  21. Multiple linear regression: What to do if I have a low Durbin-Watson value?

    I am investigating to what extent do Temperature, Rainfall, GDP per capita, Population, Livestock and Arable Land (IVs) predict Food Calories...

    Started by Miz123‎, 03-09-2017 08:41 AM
    2 Pages
    1 2
    • Replies: 15
    • Views: 628
    03-13-2017, 10:41 AM Go to last post
  22. Robust Regression v. Transformation of Variable (or both?)

    Hello everyone, I have a question about a regression I am running. I believe it's a pretty basic question, although after a couple hours...

    Started by kramer1788‎, 03-09-2017 10:01 PM
    heteroskedasticity, robust standard errors, transformations
    • Replies: 5
    • Views: 294
    03-13-2017, 10:30 AM Go to last post
  23. Moderation at some levels of moderator but not in overall model

    Hello I have three continuous variables one of which I have hypothesised to be a moderator. In the overall regression model there is no...

    Started by SBradstreet‎, 03-10-2017 05:53 AM
    moderation, process, regression analysis
    • Replies: 3
    • Views: 176
    03-10-2017, 02:04 PM Go to last post
  24. Interaction not significant but Johnson-Neyman finding significant regions

    I'm using the PROCESS macro and applying the Johnson-Neyman technique to some simple moderation analyses. I'm not quite sure what to make of some of...

    Started by syzergy‎, 03-26-2014 03:01 PM
    • Replies: 3
    • Views: 834
    03-10-2017, 08:11 AM Go to last post
  25. Moderated Regression Non-Signficant but Subgroup Correlation Significant??

    Hi Guys, I'm having a bit of trouble trying to figure out some of my statistics and wonder if any one has some ideas for me? I've run a moderated...

    Started by Dwest‎, 01-15-2013 06:44 AM
    moderation, moderator., regression, step-function
    • Replies: 3
    • Views: 1,085
    03-10-2017, 05:35 AM Go to last post
  26. Problems with the interpretation of a moderation analysis

    Hi there, I am undertaking a moderated regression analysis for an experiment I have conducted using SPSS 20.(With an add-on developed by Andrew...

    Started by statsman26798‎, 07-07-2013 06:33 PM
    • Replies: 1
    • Views: 648
    03-10-2017, 05:30 AM Go to last post
  27. Question Generate a new Y-Varible (1/0 Defect/nonDefect)?

    Hello Im currently assigned a task where I need to investigate if there is any correlation between 15 X-variables (originates from process...

    Started by Stat55‎, 03-09-2017 04:38 AM
    • Replies: 0
    • Views: 173
    03-09-2017, 04:38 AM Go to last post
  28. Partial least squares (path analysis) - why and how to interpret attached results?

    For my research, I have a model with various mediators and one moderating variable (see image). I derived my data from an experiment. Short...

    Started by Ricovermeulen‎, 03-09-2017 03:30 AM
    experiment, path analysis, pls, regression
    • Replies: 0
    • Views: 111
    03-09-2017, 03:30 AM Go to last post
  29. Taking (years) into consideration Multiple regression?

    Figured it out

    Started by Jazz3‎, 03-06-2017 06:39 AM
    • Replies: 1
    • Views: 194
    03-08-2017, 02:45 PM Go to last post
  30. Why a simple linear regression (OLS)

    Hi! This forum is so helpful :tup: I just can't seem to find an answer to my question though. I am planning on doing a multiple regression...

    Started by Jazz3‎, 03-02-2017 07:08 AM
    2 Pages
    1 2
    • Replies: 18
    • Views: 657
    03-08-2017, 03:04 AM Go to last post
  31. What model/method to use to predict/impute missing values?

    First of all, apologies for the long and somewhat general post. I need to analyse the following tourism-related dataset and I'd appreciate any ideas...

    Started by chaps‎, 03-07-2017 04:52 AM
    • Replies: 2
    • Views: 175
    03-08-2017, 02:30 AM Go to last post
  32. Python PowerDivergence

    I am no statistician but I was asked to provide some quantification of the goodness-of-fit of a theory. This theory only uses one parameter and that...

    Started by ny2292000‎, 03-07-2017 10:51 AM
    goodness of fit
    • Replies: 0
    • Views: 127
    03-07-2017, 10:51 AM Go to last post
  33. Beta Regression Coefficients

    In a simple model, x is a continuous (normally distributed) variable predicting y. Since y values are proportions ranging from 0 to 1 (0%-100%),...

    Started by Martin Marko‎, 03-05-2017 07:16 AM
    beta-regression, logit
    • Replies: 7
    • Views: 267
    03-06-2017, 10:44 AM Go to last post
  34. Process Model and Covariates

    Hi all, I am having difficulty with Andrew Hayes' Process tool and my mediation model. Is it acceptable to run a mediation analysis with a...

    Started by Aegislash‎, 03-02-2017 07:48 AM
    andrew hayes, covariates, process model
    • Replies: 6
    • Views: 346
    03-05-2017, 01:59 PM Go to last post
  35. Non-linearity violation (predictor and log odds) in logistic regression with SAS

    Hi, I'm new to modelling and logistic regression, so I need a bit of help. I'm building a logistic regression model, and one of my continuous...

    Started by AliceMiles‎, 03-04-2017 10:38 PM
    • Replies: 2
    • Views: 226
    03-05-2017, 12:32 PM Go to last post
  36. The bootstrap method for medical modelling

    I am part of a team creating a model for paediatric hospitalised patients and would appreciate some help. We are looking to produce an accurate...

    Started by Lindsey‎, 02-27-2017 05:05 PM
    bootstrap, bootstrapping, model
    • Replies: 5
    • Views: 416
    03-04-2017, 09:01 PM Go to last post
  37. SPSS: transforming variables?

    I am doing a single linear regression and multiple regression, but I have a question about my independent variable. My independent variables (X)...

    Started by Jazz3‎, 02-16-2017 11:22 AM
    independ variable, multi linear regression, transform
    • Replies: 2
    • Views: 476
    03-02-2017, 06:27 AM Go to last post
  38. beta coefficient for a logistic regression

    I consider a simple model with binary variable Y (diseased vs non-diseased), variable X normally distributed among diseased and non-diseased with...

    Started by Alex C‎, 03-01-2017 08:57 AM
    • Replies: 7
    • Views: 349
    03-01-2017, 03:57 PM Go to last post
  39. Expert Help Required - Multiple Regression with Nominal and Scale Variables

    Hi all, I'm having huge issues with the assumptions of multiple regression and determining whether I am running my analysis correctly. First of...

    Started by Aegislash‎, 02-27-2017 04:28 AM
    dummy coding, multiple regression, nominal, scale
    • Replies: 4
    • Views: 333
    02-27-2017, 12:25 PM Go to last post
  40. logistic regression and ordinal logistic regression

    Hi, I am currently studying the ordinal logistic regression. I want to ask: is there a relationship between logistic regression with logistic...

    Started by Pamona D‎, 02-27-2017 07:17 AM
    logistic regression
    • Replies: 2
    • Views: 273
    02-27-2017, 10:01 AM Go to last post
  41. Whether to Include Treatments with 0 means Nonlinear Modeling

    Hi, I'm trying to compare the effect of temperature on developmental rate using various nonlinear models. The temperatures range 10-35 degrees C....

    Started by nebulus‎, 02-23-2017 10:21 PM
    • Replies: 0
    • Views: 312
    02-23-2017, 10:21 PM Go to last post
  42. confidence interval and p value

    dialysis Odds Ratio Std. Err. z P>z logintercept .0001105 .0003682 -2.73 0.006 1.61e-07 .0756841 Dear , I am have...

    Started by tommyvcc‎, 02-23-2017 05:49 AM
    • Replies: 2
    • Views: 354
    02-23-2017, 07:30 PM Go to last post
  43. Exclamation Instrumental variables with S&P 500 Health Care Index

    Hello everyone, I am new to this forum and I would need some help on a time series regression model with financial variables. I am regressing...

    Started by AstosDG‎, 02-21-2017 03:19 PM
    instrumental variables, time series analysis
    • Replies: 3
    • Views: 467
    02-23-2017, 07:26 PM Go to last post
  44. regression analysis for very small sample?

    hello, my study is about "The impact of corporate governance on firm performance". my sample size is 5 compagnies i have 6 IV and 1 DV so my Q...

    Started by ilyes‎, 02-20-2017 12:52 PM
    alternative, regerssion analysis, sample size
    • Replies: 7
    • Views: 480
    02-21-2017, 03:32 PM Go to last post
  45. Smile Very Small Sample Size -What multivariate analysis should be used

    Dear all, Good day! I'm having a hard time researching for possible multivariate analysis to be used in my study. I have less than 10 sample...

    Started by Gibi‎, 09-18-2012 05:39 AM
    regression analysis, small sample size
    • Replies: 6
    • Views: 4,408
    02-20-2017, 12:34 PM Go to last post
  46. Minimisation of specific residuals

    Hello, I hope that I can finde someone here to help me with the following problem: I have 11 points with x and y values. Those points are...

    Started by humic‎, 02-08-2017 06:49 AM
    • Replies: 7
    • Views: 599
    02-20-2017, 03:43 AM Go to last post
  47. Dynamic panels

    Did someone have done a serious work/report on dynamic panel with stata or Eviews? Ibegin in this field for my PHD.Please email...

    Started by canfly‎, 02-15-2017 04:58 PM
    • Replies: 0
    • Views: 346
    02-15-2017, 04:58 PM Go to last post
  48. Comparing regression coefficients between two groups > violation of independence?

    Hi all, I have a question about the comparison of regression coefficients of two groups (using SPSS) and I think this is the correct sub forum for...

    Started by greetprofeet‎, 02-11-2017 07:42 AM
    • Replies: 0
    • Views: 463
    02-11-2017, 07:42 AM Go to last post
  49. How to get a relationship equation in between variables of a multi-physics problem?

    I have a multiphysics problem in which my output voltage data is dependent on the input oscillation frequency. There are four physics coupled in the...

    Started by sajiree‎, 02-10-2017 02:41 PM
    • Replies: 1
    • Views: 310
    02-10-2017, 04:36 PM Go to last post
  50. 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 11:36 AM
    • Replies: 4
    • Views: 392
    02-08-2017, 09:20 PM Go to last post
  51. Univariate x multivariate model

    Hello everyone! I just started modelling and I have a question about how to interpret my results. I built 3 models, two univatiates (Z ~ bX +...

    Started by Marive‎, 02-08-2017 04:24 PM
    multivariate analysis, regression analysis, univariate
    • Replies: 0
    • Views: 302
    02-08-2017, 04:24 PM Go to last post
  52. Winsorizing when I have different size groups

    I have a sample that consists of large, medium, and small firms and i want to run a separate regression for each size group. When I winsorize a...

    Started by 12345678‎, 02-03-2017 03:41 AM
    outliers
    • Replies: 0
    • Views: 541
    02-03-2017, 03:41 AM Go to last post
  53. Forecast Analysis Inquiry

    Im trying to perform some time series analysis on 2015 and 2016 monthly recorded data to see what method is best for forecasting 2016 monthly values...

    Started by lokelyokel‎, 10-26-2016 08:09 AM
    forecast, forecast error, regression analysis, winters method
    • Replies: 1
    • Views: 732
    02-01-2017, 01:15 AM Go to last post
  54. Which forecast method for a time series like this one?

    Hi everyone, I do have a time series composed by 45 monthly observations and I am trying to figure out which kind of forecasting method is best...

    Started by Mark_‎, 10-11-2016 10:05 AM
    • Replies: 10
    • Views: 891
    01-31-2017, 04:36 PM Go to last post
  55. Relative impact of regressors on Y.

    A question I get asked a lot is, if we have these three predictors of Y, which of the 3 has the most, next most and least impact. I have tried...

    Started by noetsi‎, 01-29-2017 04:42 PM
    • Replies: 11
    • Views: 701
    01-30-2017, 04:16 PM Go to last post
  56. Binary Logistic Regression

    Hello, I'm new here. I have got the following problem: - my dependent variable is dichotomous: male / female - my independent variable: how...

    Started by SandroM‎, 01-30-2017 04:02 PM
    • Replies: 0
    • Views: 415
    01-30-2017, 04:02 PM Go to last post
  57. 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 01:14 PM
    • Replies: 2
    • Views: 426
    01-30-2017, 02:42 PM Go to last post
  58. robust regression estimators

    Hi everyone. I have studied the robust regression a few weeks ago and I want to have a lot of insight about it. After reading some sources, I know...

    Started by Pamona D‎, 01-30-2017 07:23 AM
    regression analysis, robust linear regression
    • Replies: 2
    • Views: 413
    01-30-2017, 10:00 AM Go to last post
  59. Anova/Linear regression

    I have two datasets, one collected by one instrument, say A, and one by another, say B, at the same time. I need to use instrument B to calibrate...

    Started by jenny_stats‎, 01-30-2017 04:45 AM
    • Replies: 0
    • Views: 386
    01-30-2017, 04:45 AM Go to last post
  60. Estimate Residuals

    Hi statistics experts, I run a usual regression model (1 dependent, different independent variables) for each industry-year and save the residuals...

    Started by M90‎, 01-29-2017 04:31 AM
    • Replies: 2
    • Views: 497
    01-29-2017, 11:03 AM Go to last post

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