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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Post ANOVA multi-variable problem

    If there is a dependent variable depending on 5 independent variables or factors, how to find the relative effect of these 5 groups on dependent...

    Started by prasun samir‎, 12-24-2015 09:12 PM
    • Replies: 3
    • Views: 1,420
    12-26-2015, 09:40 PM Go to last post
  2. Linear regression and dichotomous variable

    Hello I would like to do a linear regression (stepwise), and one of the variables I want to enter is sick/ not sick. The other variables are from...

    Started by talgef‎, 12-22-2015 04:43 AM
    • Replies: 1
    • Views: 988
    12-22-2015, 07:14 AM Go to last post
  3. Percentage change of dependent variable (MLR)

    Greetings, I went through SPSS regression analysis of a certain dataset, tested assumptions, and finally I got a multiple regression model:...

    Started by bellcross‎, 12-20-2015 09:13 AM
    • Replies: 3
    • Views: 5,058
    12-21-2015, 03:34 PM Go to last post
  4. The assumptions of multiple regression: An article by TalkStatters!

    Hi everyone, A lot of you are aware of this already, but I'm posting this to a public subforum on Quark's suggestion :) Recently a group of 3...

    Started by CowboyBear‎, 09-10-2013 10:31 PM
    • Replies: 3
    • Views: 84,667
    12-21-2015, 02:02 PM Go to last post
  5. adding skewness and kurtosis to CAPM - regression

    Suppose I have a set of monthly returns of a stock, monthly 'market' returns and some risk free rate for lets say 10 years. Performing an usually OLS...

    Started by Deusdeorum‎, 07-21-2015 03:55 AM
    capm, regression analysis
    • Replies: 1
    • Views: 4,597
    12-18-2015, 07:26 PM Go to last post
  6. Logistic Regression

    I am looking at a medical outcome (binary) and known risk factors. There are 10 established risk factors that I will test in my sample of 300...

    Started by hlsmith‎, 12-18-2015 09:28 AM
    • Replies: 4
    • Views: 1,213
    12-18-2015, 10:04 AM Go to last post
  7. 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: 606
    12-17-2015, 09:34 PM Go to last post
  8. Nominal predictor with 70 levels....

    I have a nominal level predictor with 70 levels (its units that provide some service). I want to analyze how these units preform on an interval...

    Started by noetsi‎, 12-08-2015 03:13 PM
    • Replies: 9
    • Views: 1,807
    12-16-2015, 01:44 PM Go to last post
  9. Control variable for panel analysis

    i am writing a paper analyzing What is the effect of corruption on Government expenditure (education,health,military and infrastructure). I have data...

    Started by arni‎, 12-16-2015 06:55 AM
    • Replies: 0
    • Views: 696
    12-16-2015, 06:55 AM Go to last post
  10. Tjur's pseuo R squared

    Paul Allison recommends this now for logistic regression, but I have never run across it (it has not been formally named this, Tjur is the author who...

    Started by noetsi‎, 12-15-2015 03:39 PM
    • Replies: 4
    • Views: 1,547
    12-15-2015, 09:05 PM Go to last post
  11. Logistic regression: Development of a hypothesis question

    Logistic regression: Development of a hypothesis question Hello guys, I am working on my master thesis right now. I am examining...

    Started by maxime39‎, 12-14-2015 09:18 AM
    • Replies: 2
    • Views: 665
    12-15-2015, 12:39 PM Go to last post
  12. AIC for evaluating transformations

    I was just reading an article that seemed to say they used AIC to evaluate continuous variable transformations, I guess in a logistic model. I am...

    Started by hlsmith‎, 12-04-2015 10:13 PM
    • Replies: 1
    • Views: 880
    12-15-2015, 09:39 AM Go to last post
  13. New to statistics and Binary Logistics Regression

    Dear Fellows! In search of help just found this forum and I hope there would be anyone who will help me. I am doing the Binary Logistic...

    Started by Usman Abdullah‎, 12-12-2015 12:36 AM
    • Replies: 3
    • Views: 1,191
    12-12-2015, 05:53 PM Go to last post
  14. What does intercept mean in regression analysis?

    I have searched it on the web but I just cant understand it. To better understand it I did one example my self. Can somebody explain me this? >...

    Started by Mr Good News‎, 12-10-2015 02:53 AM
    • Replies: 3
    • Views: 1,603
    12-12-2015, 11:59 AM Go to last post
  15. Multi variable Regression

    Dear Regression Experts, I am new in this field, I have set of data of about 1 lac entries having a total of 10 variables of which 9 are input...

    Started by wali‎, 12-10-2015 07:27 AM
    • Replies: 4
    • Views: 1,243
    12-12-2015, 01:34 AM Go to last post
  16. Calculate estimated median survival time (by hand)

    So I have some SAS code: proc lifereg data=surv_data; model event_time * censor(1) = var1 var2 var3 / distribution=weibull; output...

    Started by lancearmstrong1313‎, 12-10-2015 01:06 PM
    • Replies: 5
    • Views: 1,307
    12-11-2015, 01:05 PM Go to last post
  17. Tutorial Tobit Eviews 9

    The tobit models, Also called a censored regression models (Tutorial Tobit Eviews 9) (Guide Tobit Eviews 9) (Regression Tobit Eview 9), is designed...

    Started by OlhDt_semarang‎, 12-11-2015 12:53 AM
    (tutorial tobit eviews 9, guide tobit eviews 9, regression tobit eview 9
    • Replies: 0
    • Views: 3,154
    12-11-2015, 12:53 AM Go to last post
  18. Eviews 9 Tutorial Two Stage Least Squares

    Two-stage least squares (TSLS) is a special case of instrumental variables regression. As the name Suggests, there are two distinct stages in the...

    Started by OlhDt_semarang‎, 12-09-2015 08:46 PM
    guide eview 9, tutorial eviews 9
    • Replies: 0
    • Views: 2,369
    12-09-2015, 08:46 PM Go to last post
  19. Ordered Logistic Regression - proportional odds

    Hey, for a homework paper I have analyze some data. Its about how social networks are related to health. My depended var is an ordinal variable...

    Started by Hansbusch‎, 12-07-2015 07:42 AM
    • Replies: 0
    • Views: 1,042
    12-07-2015, 07:42 AM Go to last post
  20. Exam Question Help

    Hey Guys, After a worked solution for this previous exam question, if that's too much to ask, I understand, could you then point me to some...

    Started by IRK‎, 12-07-2015 02:15 AM
    • Replies: 1
    • Views: 912
    12-07-2015, 03:51 AM Go to last post
  21. Regression analysis with multicollinearity

    I am using jmp software for analysis... I am looking at prognostic factors that influence survival of patients with a specific type of cancer. ...

    Started by yellowsubmarine_7‎, 12-06-2015 04:55 PM
    regression analysis
    • Replies: 1
    • Views: 824
    12-06-2015, 06:05 PM Go to last post
  22. Compute and interpretation of logarithmic dependent variable

    Hello everyone, For a paper I am using a model from another paper. However, I have some difficulties determining how I should generate this...

    Started by Jantje Beton‎, 12-06-2015 01:16 PM
    • Replies: 0
    • Views: 610
    12-06-2015, 01:16 PM Go to last post
  23. Interpretation of the squared term coefficient in the presence of interaction

    Hello dear form members, Please consider the following regression model: y = a + b1x1 + b2x1^2 + b3x2 + b4x1*x2 + e, Note that x1 is (1)...

    Started by kiton‎, 11-11-2015 04:09 PM
    • Replies: 6
    • Views: 1,462
    12-06-2015, 11:03 AM Go to last post
  24. Rare suppressor effect?

    Hey, I recently discovered a somewhat surprising result in a hierarchical regression: I have three predictors (C M N) and one outcome (D). ...

    Started by asbjorng‎, 03-18-2014 03:40 AM
    • Replies: 2
    • Views: 1,159
    12-06-2015, 06:45 AM Go to last post
  25. Applying multiple regression results to new data SPSS

    My study involves testing infants at multiple time points using a number of behavioural tests. I used a multiple regression to establish which...

    Started by rdavis09‎, 12-05-2015 10:05 AM
    • Replies: 3
    • Views: 1,395
    12-06-2015, 04:17 AM Go to last post
  26. Integrating a continuous predictor in multiple logistic regression?

    Hi everyone, I was wondering if you could help tell me if this would be possible. I'm doing a health research project were I am using a lot of...

    Started by derivativegradient‎, 12-05-2015 10:55 PM
    • Replies: 1
    • Views: 657
    12-06-2015, 03:50 AM Go to last post
  27. Estimate a Logistic Regression Model

    Hi guys, I want to estimate a logistic regression model's equation based on observed data and get the coefficients to extrapolate further. I have...

    Started by Oberon‎, 12-03-2015 08:40 AM
    logistic, regression
    • Replies: 6
    • Views: 1,825
    12-04-2015, 01:18 AM Go to last post
  28. Specifying the correct model in Oxmetrics

    I have an equation: Y = c + b1X1 + b2X2 + b3X3 Y = Cryptographic ability (scaled 0-200) X1 = Pattern recognition skills (scaled 0-20) X2 =...

    Started by TimeMachine‎, 12-03-2015 12:43 AM
    • Replies: 0
    • Views: 679
    12-03-2015, 12:43 AM Go to last post
  29. Hypothesis test on number of votes accidentially given to Buchanan

    Hey :wave: I have the following task: Estimate the number of votes, denoted v, in Palm Beach that are accidentially given to Buchanan by...

    Started by Hopeless‎, 12-01-2015 03:43 AM
    • Replies: 0
    • Views: 788
    12-01-2015, 03:43 AM Go to last post
  30. statistical robustness analysis in minitab

    Hello! I was asked to comment on statistical robustness analysis in minitab, but honestly I don't know much about it. Can anyone help me...

    Started by kaczka03‎, 11-29-2015 04:11 PM
    • Replies: 0
    • Views: 1,051
    11-29-2015, 04:11 PM Go to last post
  31. Logit:why aren't my exponentiated coefficients equaling my odds ratio (for nominal x)

    I'm running logit in JMP. My understanding is that if you exponentiate the coefficients, you get the change in odds ratios from a 1 unit change in X....

    Started by Chriscic‎, 11-28-2015 11:06 AM
    • Replies: 3
    • Views: 1,364
    11-28-2015, 10:18 PM Go to last post
  32. cross-validated AUC

    Hello All, I hope the thread's title makes sense to you. I need to perform internal Cross-Validation using k-fold CV (needless to say, to assess how...

    Started by gianmarco‎, 11-25-2015 02:42 AM
    • Replies: 10
    • Views: 1,673
    11-27-2015, 03:32 PM Go to last post
  33. [Logistic regression: Stepwise] Why does the model keep a non-significant predictor?

    Hello there, I'm running a logistic regression with four independent variables. I use the Stepwise: Backwards LR method for the regression. ...

    Started by MelinJD‎, 11-24-2015 11:01 AM
    • Replies: 2
    • Views: 1,078
    11-27-2015, 03:56 AM Go to last post
  34. 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: 707
    11-26-2015, 12:10 PM Go to last post
  35. Linear regression - help with meeting/avoiding the assumptions

    Hello all! I am tasked with fitting a linear model with one dependent variable y and one independent variable x. I am using R for the analysis....

    Started by Frost_Maggot‎, 11-25-2015 05:07 PM
    • Replies: 2
    • Views: 1,173
    11-25-2015, 05:20 PM Go to last post
  36. Question Ranking a Location using Linear Regression

    Hi, I am facing a strange problem with a software patented in the USA. It is a location evaluation software, which offers insights on determining...

    Started by Confidential‎, 11-22-2015 06:23 AM
    • Replies: 6
    • Views: 1,668
    11-24-2015, 09:32 AM Go to last post
  37. Variable Analysis

    I'm new to using regression and was curious how most of you go about creating a tightly fit model. I've always tried to get all my variables under a...

    Started by trampledunderfoot‎, 11-23-2015 11:35 PM
    • Replies: 1
    • Views: 792
    11-24-2015, 07:34 AM Go to last post
  38. ANCOVA - can I delete a very significant variable from a model's equation?

    Hi all, I undertook a sensitivity analysis to study the contribution of explanatory variables to soil organic carbon variations. Here, the...

    Started by CGG‎, 11-22-2015 05:38 PM
    ancova, variable in model
    • Replies: 5
    • Views: 968
    11-24-2015, 07:30 AM Go to last post
  39. Multiple linear regression using moderators

    Hi guys, first post here! First some background information: I am doing a study that examines whether patents and trademarks (2 independent...

    Started by Inter‎, 11-23-2015 11:40 AM
    • Replies: 0
    • Views: 984
    11-23-2015, 11:40 AM Go to last post
  40. Instrumental variable approach to a model with squared and interaction terms

    Moderator, please delete this post.

    Started by kiton‎, 11-22-2015 04:50 PM
    endogeneity, instruments, least squares regression
    • Replies: 0
    • Views: 604
    11-22-2015, 04:50 PM Go to last post
  41. Degree of Freedom in extra sum of squares

    Give the degrees of freedom associated with a)SSR(X_1|X_2) b)SSR(X_2|X_1,X_3) c)SSR(X_1,X_2|X_3,X_4) d)SSR(X_1,X_2,X_3|X_4,X_5)

    Started by askazy‎, 11-21-2015 12:29 PM
    • Replies: 0
    • Views: 844
    11-21-2015, 12:29 PM Go to last post
  42. Regression analysis in MS Excel

    I have a very simple model, in which Y is the average of three variables (A, B and C). Now I would like to know how much of the variance in Y is...

    Started by Stat789‎, 11-21-2015 10:25 AM
    • Replies: 0
    • Views: 745
    11-21-2015, 10:25 AM Go to last post
  43. [Logistic Regression] - Is it possible to compare the outcomes?

    Dear all, First time poster here. I'm currently working on my thesis and i'm stuck with a complex matter which i hope you guys can help me with. I...

    Started by Tway‎, 11-19-2015 03:47 PM
    logistic regression
    • Replies: 1
    • Views: 1,051
    11-21-2015, 02:55 AM Go to last post
  44. Implement Young's Information Criterion in Matlab for analyzing recursive arx models

    Hey For an assignment we want to implement the YIC instead of Aikake's information criterion because it's more suitable to fit our data. We have...

    Started by Alex40014‎, 11-20-2015 04:24 AM
    • Replies: 0
    • Views: 1,123
    11-20-2015, 04:24 AM Go to last post
  45. regression on age groups

    Dear All, I have the following question: Estimate a simple regression model of ‘libertarian-authoritarian’ attitude as a function of age groups...

    Started by sugabird22‎, 11-17-2015 08:55 AM
    age, group, regression
    • Replies: 5
    • Views: 3,089
    11-17-2015, 06:37 PM Go to last post
  46. Will Cochrane-Orcutt process remedy heteroskedasticity? Using GRETL

    I tried searching for this in the forums but cant seem to find anything. I'm probably just wording it wrong. I'm working on a research project for...

    Started by NorCalLove‎, 11-17-2015 12:19 AM
    • Replies: 1
    • Views: 784
    11-17-2015, 05:44 AM Go to last post
  47. Post Model to use, fractions as independent and dependent variables

    Hi, I have some background on doing regression analysis, however never on fractional variables. My question is related to model selection on...

    Started by ddali‎, 11-14-2015 10:13 AM
    fraction, regression analysis
    • Replies: 1
    • Views: 1,322
    11-14-2015, 04:36 PM Go to last post
  48. Which R-Package / function is appropriate? fixed variance, random coefficients and AR

    Hi, I have time-dependent data which show an inreasing variance with a certain covariate X (which can be modelled using a fixed cariance...

    Started by mmercker‎, 11-14-2015 03:20 AM
    autoregression, fixed variance, regression analysis
    • Replies: 0
    • Views: 721
    11-14-2015, 03:20 AM Go to last post
  49. Residual Plots. What's going on.

    I'm running some analysis on grades in different subjects and seeing if being involved in this outside activity has an impact on grades. I am looking...

    Started by econh‎, 11-13-2015 10:07 PM
    • Replies: 1
    • Views: 861
    11-13-2015, 10:29 PM Go to last post
  50. Regression with Differential equations (ODEs / PDEs)

    Hi, in the field of mathematical modelling of biological or physical processes, most of them cannot be described by simple (linear or nonlinear)...

    Started by mmercker‎, 11-12-2015 07:18 AM
    differential equation, ode, pde, regression
    • Replies: 0
    • Views: 740
    11-12-2015, 07:18 AM Go to last post
  51. A coefficient to determine Variance

    Hi I am working on a system where temperature stabilises with distance but also increases/ decreases based on month/ hour. Is there a way to...

    Started by PYork‎, 11-09-2015 09:13 AM
    regression, variance
    • Replies: 1
    • Views: 1,695
    11-09-2015, 12:41 PM Go to last post
  52. Increasing variables decreases DFs?

    I'm sorry if this is a total noob question, but I cannot figure it out. When I'm adding variables into my regression into STATA, the degrees of...

    Started by sociologydude76‎, 11-07-2015 02:47 PM
    degrees of freedom, regression, stata
    • Replies: 2
    • Views: 1,004
    11-08-2015, 09:46 AM Go to last post
  53. GEE: best model by comparing residuals (SPSS)

    Hello there, I am doing a study on vigilance research by comparing different EEG methods (ERP, FFT and ERD) regarding their predictive power of...

    Started by FrankD‎, 11-07-2015 08:33 AM
    • Replies: 0
    • Views: 998
    11-07-2015, 08:33 AM Go to last post
  54. regression analysis for research

    hi there, working on a project in which we compare eye contrast among mammals at various points. We collected data (luminance value) for parts...

    Started by kelseyjo‎, 11-06-2015 08:20 PM
    • Replies: 0
    • Views: 905
    11-06-2015, 08:20 PM Go to last post
  55. Can you help me identify the right test for my data?

    I’m trying to identify the right statistical method to use. Here’s a case analogous to mine: Let’s say I’m interested in whether basketball team...

    Started by Frameshift‎, 11-06-2015 06:19 PM
    • Replies: 0
    • Views: 884
    11-06-2015, 06:19 PM Go to last post
  56. Adding main effects when main effects model is insignificant

    Hi, I have a linear model where both main effects are insignificant, and an overall insignificant model. Should I stop just stop there, or can I...

    Started by bryantw‎, 11-05-2015 05:57 PM
    • Replies: 1
    • Views: 657
    11-05-2015, 07:31 PM Go to last post
  57. Factor scores or mean values?

    Dear all, I hope I am in the correct forum and you can help me. At the moment I pursue a survey study. In the survey I obtain items that shall...

    Started by Ute1985‎, 11-05-2015 05:42 AM
    • Replies: 0
    • Views: 613
    11-05-2015, 05:42 AM Go to last post
  58. Question related to Generalized Linear Mixed Model

    I'm working with a dataset containing the following: Fixed variables: Age, Body Size, Antler Size, Average Age Random variable: Animal ID...

    Started by Sightfish‎, 11-04-2015 12:18 PM
    • Replies: 2
    • Views: 954
    11-04-2015, 10:55 PM Go to last post
  59. R Squared and dummy variables

    Hey, If you changed your model from one variable to a number of dummy variables, would the R^2 increase considerably, supposing that the dummy...

    Started by mhider‎, 11-01-2015 02:36 PM
    • Replies: 5
    • Views: 2,026
    11-03-2015, 02:11 PM Go to last post
  60. Odds ratio using the negative log-log link functin in ordinal logistic regression

    Hello, Below is a description of a statistical problem and questions for which I need clarification. The data I'm working on are from an online...

    Started by GLepage‎, 10-27-2015 10:27 AM
    • Replies: 1
    • Views: 1,827
    10-29-2015, 09:05 PM Go to last post

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