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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. 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: 550
    03-21-2017, 04:18 PM Go to last post
  2. 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 08:01 AM
    2 Pages
    1 2
    robust
    • Replies: 15
    • Views: 2,726
    03-21-2017, 02:05 PM Go to last post
  3. 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: 625
    03-21-2017, 11:25 AM Go to last post
  4. 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: 290
    03-21-2017, 05:54 AM Go to last post
  5. 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: 567
    03-20-2017, 03:08 PM Go to last post
  6. 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: 325
    03-20-2017, 10:12 AM Go to last post
  7. 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: 1,058
    03-19-2017, 02:14 PM Go to last post
  8. 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: 624
    03-17-2017, 08:23 AM Go to last post
  9. 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: 480
    03-15-2017, 04:02 AM Go to last post
  10. 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: 1,587
    03-14-2017, 03:32 PM Go to last post
  11. 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: 480
    03-14-2017, 08:47 AM Go to last post
  12. 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: 595
    03-14-2017, 05:03 AM Go to last post
  13. 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 09:41 AM
    2 Pages
    1 2
    • Replies: 15
    • Views: 1,656
    03-13-2017, 10:41 AM Go to last post
  14. 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 11:01 PM
    heteroskedasticity, robust standard errors, transformations
    • Replies: 5
    • Views: 878
    03-13-2017, 10:30 AM Go to last post
  15. 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 06:53 AM
    moderation, process, regression analysis
    • Replies: 3
    • Views: 503
    03-10-2017, 03:04 PM Go to last post
  16. 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: 1,394
    03-10-2017, 09:11 AM Go to last post
  17. 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 07:44 AM
    moderation, moderator., regression, step-function
    • Replies: 3
    • Views: 1,946
    03-10-2017, 06:35 AM Go to last post
  18. 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: 1,188
    03-10-2017, 06:30 AM Go to last post
  19. 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 05:38 AM
    • Replies: 0
    • Views: 543
    03-09-2017, 05:38 AM Go to last post
  20. 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 04:30 AM
    experiment, path analysis, pls, regression
    • Replies: 0
    • Views: 458
    03-09-2017, 04:30 AM Go to last post
  21. Taking (years) into consideration Multiple regression?

    Figured it out

    Started by Jazz3‎, 03-06-2017 07:39 AM
    • Replies: 1
    • Views: 553
    03-08-2017, 03:45 PM Go to last post
  22. 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 08:08 AM
    2 Pages
    1 2
    • Replies: 18
    • Views: 2,351
    03-08-2017, 04:04 AM Go to last post
  23. 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 05:52 AM
    • Replies: 2
    • Views: 682
    03-08-2017, 03:30 AM Go to last post
  24. 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 11:51 AM
    goodness of fit
    • Replies: 0
    • Views: 675
    03-07-2017, 11:51 AM Go to last post
  25. 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 08:16 AM
    beta-regression, logit
    • Replies: 7
    • Views: 894
    03-06-2017, 11:44 AM Go to last post
  26. 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 08:48 AM
    andrew hayes, covariates, process model
    • Replies: 6
    • Views: 1,312
    03-05-2017, 02:59 PM Go to last post
  27. 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 11:38 PM
    • Replies: 2
    • Views: 757
    03-05-2017, 01:32 PM Go to last post
  28. 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 06:05 PM
    bootstrap, bootstrapping, model
    • Replies: 5
    • Views: 1,570
    03-04-2017, 10:01 PM Go to last post
  29. 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 12:22 PM
    independ variable, multi linear regression, transform
    • Replies: 2
    • Views: 1,402
    03-02-2017, 07:27 AM Go to last post
  30. 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 09:57 AM
    • Replies: 7
    • Views: 1,132
    03-01-2017, 04:57 PM Go to last post
  31. 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 05:28 AM
    dummy coding, multiple regression, nominal, scale
    • Replies: 4
    • Views: 1,275
    02-27-2017, 01:25 PM Go to last post
  32. 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 08:17 AM
    logistic regression
    • Replies: 2
    • Views: 1,226
    02-27-2017, 11:01 AM Go to last post
  33. 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 11:21 PM
    • Replies: 0
    • Views: 915
    02-23-2017, 11:21 PM Go to last post
  34. 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 06:49 AM
    • Replies: 2
    • Views: 1,344
    02-23-2017, 08:30 PM Go to last post
  35. 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 04:19 PM
    instrumental variables, time series analysis
    • Replies: 3
    • Views: 1,386
    02-23-2017, 08:26 PM Go to last post
  36. 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 01:52 PM
    alternative, regerssion analysis, sample size
    • Replies: 7
    • Views: 1,510
    02-21-2017, 04:32 PM Go to last post
  37. 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: 7,602
    02-20-2017, 01:34 PM Go to last post
  38. 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 07:49 AM
    • Replies: 7
    • Views: 1,816
    02-20-2017, 04:43 AM Go to last post
  39. 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 05:58 PM
    • Replies: 0
    • Views: 1,377
    02-15-2017, 05:58 PM Go to last post
  40. 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 03:41 PM
    • Replies: 1
    • Views: 821
    02-10-2017, 05:36 PM Go to last post
  41. 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: 1,476
    02-08-2017, 10:20 PM Go to last post
  42. 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 05:24 PM
    multivariate analysis, regression analysis, univariate
    • Replies: 0
    • Views: 971
    02-08-2017, 05:24 PM Go to last post
  43. 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 04:41 AM
    outliers
    • Replies: 0
    • Views: 1,470
    02-03-2017, 04:41 AM Go to last post
  44. 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: 1,659
    02-01-2017, 02:15 AM Go to last post
  45. 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: 2,322
    01-31-2017, 05:36 PM Go to last post
  46. 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 05:42 PM
    • Replies: 11
    • Views: 2,085
    01-30-2017, 05:16 PM Go to last post
  47. 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 05:02 PM
    • Replies: 0
    • Views: 1,243
    01-30-2017, 05:02 PM Go to last post
  48. 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: 1,364
    01-30-2017, 03:42 PM Go to last post
  49. 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 08:23 AM
    regression analysis, robust linear regression
    • Replies: 2
    • Views: 1,731
    01-30-2017, 11:00 AM Go to last post
  50. 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 05:45 AM
    • Replies: 0
    • Views: 1,266
    01-30-2017, 05:45 AM Go to last post
  51. 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 05:31 AM
    • Replies: 2
    • Views: 1,527
    01-29-2017, 12:03 PM Go to last post
  52. SPSS: regression analysis for 3x2 experiment. How to test for interaction

    Dear all, For my research I have the following facts: - I have two categorical IVs: - treatment condition called competition, which has...

    Started by Ricovermeulen‎, 01-25-2017 09:39 AM
    3x2, anova, experiment, regression
    • Replies: 4
    • Views: 1,972
    01-29-2017, 04:19 AM Go to last post
  53. Help: regression analysis for categorical/binary exposure

    Cell biologist in need of stats help! I am using stata to analyse my data and have two questions: 1. I have a continuous outcome (hippocampal...

    Started by Leucine‎, 01-28-2017 07:50 PM
    • Replies: 3
    • Views: 1,728
    01-28-2017, 11:45 PM Go to last post
  54. Logistic Regression on SAS, all variables I put in to test are showing up as insignif

    Hello, I need help really badly. I am using SAS to do my statistical modelling. I have several different categorical variables with the...

    Started by shivu‎, 01-27-2017 07:46 PM
    • Replies: 2
    • Views: 1,699
    01-27-2017, 09:49 PM Go to last post
  55. Comparison of Coefficients of two different Regression Models

    Hi everyone, I am analyzing the impact of price and promotion activities on sales in two separate 2-Way-Fixed Effects models. One model is for...

    Started by LariB‎, 01-23-2017 04:08 AM
    • Replies: 4
    • Views: 1,982
    01-27-2017, 03:53 PM Go to last post
  56. Exp(B) or CI values with the letter "E"

    Dear all, I am running a Multinomial Log. Regression. Everything seems fine but I do not understand when Exp(B) oder CI values are like...

    Started by rezzak‎, 01-26-2017 04:42 AM
    confidence interval, exp(b), logistic regression
    • Replies: 6
    • Views: 2,245
    01-27-2017, 11:42 AM Go to last post
  57. Beta significance level in one model the same as the R-squared-change significance

    I am very new to statistics, so apologies in advance if I have not explained this clearly. I have run two types of linear regression: - The...

    Started by francyb‎, 01-23-2017 05:03 PM
    beta, linear regression, regression, signifiance
    • Replies: 1
    • Views: 2,074
    01-24-2017, 10:50 AM Go to last post
  58. what to do with "bad" logistic regression results

    I ran a simple logistic regression in R and here are my results. my independent variables are all "counts" and I coded my Y as 0 and 1. This is a...

    Started by semidevil‎, 01-18-2017 04:16 PM
    • Replies: 9
    • Views: 2,864
    01-23-2017, 12:18 PM Go to last post
  59. Finding predicted values with logged (ln) dependent variable.

    Hello all, I'm currently working on my first quantitative project. I am doing an OLS regression in SPSS. I had to take the natural log of my DV in...

    Started by burdfishdemon‎, 07-27-2016 03:21 AM
    log transformation, ols, predicted values, spss, statistics
    • Replies: 4
    • Views: 2,571
    01-23-2017, 11:16 AM Go to last post
  60. I think this is a simple question but I can't seem to find it in my stats book

    I have a linear regression equation (y=6.0707x-1200.2) that was used to develop 50 point estimates. The sum of these estimates is the point estimate...

    Started by bugle4one‎, 01-19-2017 11:27 AM
    • Replies: 12
    • Views: 2,543
    01-20-2017, 02:29 PM Go to last post

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