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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Explanatory variable a function of dependent variable

    Hello, Does anyone know the proper terminology for the problem caused by regressing a dependent variable on a set of explanatory variables that...

    Started by anthony19‎, 06-11-2014 04:36 PM
    model checking
    • Replies: 0
    • Views: 2,213
    06-11-2014, 04:36 PM Go to last post
  2. Two factors, time dependent response

    Hello, I would like to know which statistical test should i apply to test the effects of two factors over a response variable which also depends on...

    Started by jael1506‎, 06-11-2014 02:38 AM
    • Replies: 0
    • Views: 1,094
    06-11-2014, 02:38 AM Go to last post
  3. Logistic regression - default in 3years time

    I am running a logistic regression to estimate a firms probability to default. My data set covers 10 years data (2002-2011)with each firms' annual...

    Started by jeyni‎, 06-09-2014 06:49 AM
    • Replies: 6
    • Views: 1,964
    06-09-2014, 11:41 PM Go to last post
  4. Cool Best way to analyze time 1/time 2 data??

    Hi There! I was hoping to get some input on the best way to test some data that I have collected (using SPSS). In short, respondents make an...

    Started by drove5‎, 06-09-2014 02:53 PM
    anova, means, regression, time lag
    • Replies: 1
    • Views: 1,009
    06-09-2014, 07:12 PM Go to last post
  5. "two variables are too similar and thus there is no linear interaction found"-Effect?

    Hi there (german verision below) I did a multiple Regression. There are two variables where no linear interactions was found. This is a little...

    Started by MrPeer‎, 06-09-2014 10:45 AM
    • Replies: 3
    • Views: 2,118
    06-09-2014, 01:16 PM Go to last post
  6. Smile Weighted Least Squares (WLS) using initial OLS and basis functions.

    Hi All, I have a question about WLS using basis functions. I am tasked with writing some code to automate a WLS procedure. Initially I am...

    Started by hob‎, 05-27-2014 02:36 PM
    • Replies: 2
    • Views: 1,465
    06-09-2014, 11:08 AM Go to last post
  7. Modeling Logistic regression

    I am writing my theses and firms default risk. Searching so relevant papers came with confusion and need some help. Have two logistic models from...

    Started by jeyni‎, 06-09-2014 06:39 AM
    • Replies: 0
    • Views: 1,417
    06-09-2014, 06:39 AM Go to last post
  8. Sobel test categorical IV (3 categories)

    Hi, I've come across similar threats but none have been answered unfortunately. For my bachelor thesis I have performed a regression analysis...

    Started by kimw91‎, 06-06-2014 04:34 PM
    categorical predictors, mediation, mediation analysis, sobel, thesis
    • Replies: 0
    • Views: 1,718
    06-06-2014, 04:34 PM Go to last post
  9. Help! [a large volume of corner solutions]

    Hi, I've ordered categorical data from 1 to 5. The problem is that I have a large volume of answers at either corner 1 or 5. What I'm doing is...

    Started by simone25‎, 06-06-2014 03:44 PM
    • Replies: 0
    • Views: 1,179
    06-06-2014, 03:44 PM Go to last post
  10. Mixing lasso with OLS

    Hi, I am looking at a data set of 45 continuous IV and 1 DV, trying to find an acceptable regression model. I tried the lasso with cross-validation...

    Started by rogojel‎, 06-02-2014 01:28 PM
    lasso, model building, ols regression, p-value
    • Replies: 4
    • Views: 3,243
    06-06-2014, 02:50 PM Go to last post
  11. Pooled OLS regression with two waves of panel data

    Hi. I am currently working on a project estimating incomes. I only have two waves of unbalanced panel data, which I will be pooling and analyzing...

    Started by Kabouterke‎, 06-04-2014 12:58 PM
    • Replies: 2
    • Views: 2,430
    06-06-2014, 02:06 PM Go to last post
  12. Panel fixed effects model for competitiveness

    Hi all, I'm very new in econometrics and I'm having some problems in estimating my model and interpreting its coefficients. What I'm trying to...

    Started by viviana84‎, 06-06-2014 03:58 AM
    gravitational variables, panel fixed effects
    • Replies: 0
    • Views: 1,450
    06-06-2014, 03:58 AM Go to last post
  13. Mediation in a Piecemeal Growth Curve Model

    tl;dr version: In a piecemeal growth curve model test of mediation in a RCT can I calculate the indirect effect via (a: piecemeal:treatment -->...

    Started by Lazar‎, 06-02-2014 12:01 AM
    • Replies: 4
    • Views: 1,511
    06-04-2014, 04:56 PM Go to last post
  14. beginner's specification problems

    Hi, I am doing an assignment on unemployment (DV) and racial discrimination - specifically african-american population - and I am in doubt whether to...

    Started by bicalix‎, 06-04-2014 01:24 PM
    model building, negative binomial, ols regression
    • Replies: 0
    • Views: 1,075
    06-04-2014, 01:24 PM Go to last post
  15. Multiple Regression (SPSS) - Moderation

    Hey all, I'm pretty lost doing the multiple regression analysis for my Master thesis and maybe one of you great people can help me ;). So, one...

    Started by Jeanette‎, 06-04-2014 06:09 AM
    • Replies: 2
    • Views: 2,878
    06-04-2014, 08:00 AM Go to last post
  16. Logistic regression- categories

    I am very new into Spss and spent a few hours to understand logistic regression. :shakehead I could not understand the relationship between 0...

    Started by ahmetx‎, 06-01-2014 03:46 PM
    logistic regression, spss
    • Replies: 2
    • Views: 1,881
    06-04-2014, 05:48 AM Go to last post
  17. Statistical Matrix

    Hi, If I'm given a (X^TX)^(-1) matrix how do i find the x for the coefficients? Idont think i explained that very well so the actual question...

    Started by Kala‎, 06-03-2014 01:24 AM
    • Replies: 1
    • Views: 1,557
    06-03-2014, 01:38 AM Go to last post
  18. Time fixed effects and significance of different models

    Hello, I am currently writing my master thesis in economics. However, I might not be as educated in Statistics as you might be, so I hope you...

    Started by Johnson2‎, 06-01-2014 05:53 PM
    • Replies: 5
    • Views: 2,101
    06-03-2014, 12:48 AM Go to last post
  19. Hausman Test - Do I correct for heteroscedasticity and autocorrelation?

    Hi fella's! I am currently working on a regression analysis of a demand curve and i'm trying to test endogeneity (because I expect the price to be...

    Started by Nicolasken‎, 06-02-2014 02:01 PM
    hausman, hausman test, heteroscedasticity
    • Replies: 0
    • Views: 2,263
    06-02-2014, 02:01 PM Go to last post
  20. Do you think there is any correlation between this two variables?

    Do you think there is any correlation between these two variables? scatterplot: http://www.directupload.net/file/d/3641/5g58d9hx_jpg.htm data...

    Started by DanielFox‎, 06-02-2014 09:33 AM
    • Replies: 1
    • Views: 1,458
    06-02-2014, 09:34 AM Go to last post
  21. Solution to the elements of statistical learning by Hastie, Tibshirani and Friedman

    Hello, everyone, I am reading the book "the elements of statistical learning: data mining, inference, and prediction" authored by Hastie, Tibshirani...

    Started by t.wang21@yahoo.com.au‎, 06-02-2014 12:55 AM
    • Replies: 0
    • Views: 4,803
    06-02-2014, 12:55 AM Go to last post
  22. Interpretation of Cox's Proportional Hazards Output - Variable Selection

    Hi everyone, I understand the basics of Cox's Proportional Hazards modelling, and have run a model I am happy with. I've used the Forward Stepwise...

    Started by biologynerd‎, 06-02-2014 12:28 AM
    • Replies: 0
    • Views: 1,215
    06-02-2014, 12:28 AM Go to last post
  23. Interval independent variable and ordinal dependent variables

    Hi everyone, I apologize profusely if this is an extremely stupid question, but I've been reading statistics books for the past few hours and...

    Started by Matthijs‎, 06-01-2014 04:42 AM
    • Replies: 3
    • Views: 2,594
    06-01-2014, 07:11 AM Go to last post
  24. Vector variables - what are they?

    Hi again. All of the research papers similar to the one I am working on use vector variables. I have been looking around to find something that...

    Started by Kabouterke‎, 05-31-2014 10:55 AM
    • Replies: 2
    • Views: 1,246
    05-31-2014, 12:34 PM Go to last post
  25. Multicollinearity of categorical variables in linear regression

    Running a linear regression which includes mostly continuous variables as predictors, but one categorical predictor (which I have dummy coded as...

    Started by Dr.J‎, 05-30-2014 01:10 PM
    • Replies: 0
    • Views: 2,417
    05-30-2014, 01:10 PM Go to last post
  26. Dependent variable as percentage

    Hi, if I have a regression model where the dependent variable is expressed in percentages, with a lot of zero values (say about half of the...

    Started by Student457‎, 05-20-2014 04:20 PM
    • Replies: 3
    • Views: 2,226
    05-30-2014, 05:38 AM Go to last post
  27. Plz help...LOG transformation of Ratio in Percentage Independent variable

    Hi, In my regression I have used a ratio term (in %) as the independent variable. That value ranges from 0.0001% to 99.95%. Can I take the log of...

    Started by arindamelec‎, 05-30-2014 05:36 AM
    independent variable, log, ratio, regresion
    • Replies: 0
    • Views: 1,670
    05-30-2014, 05:36 AM Go to last post
  28. Odds Ratio for Logistical Regression

    Hi, I have run an an analysis in SPSS using logistical regression and it has given me an odds ratio of 165968442.957, which seems a little...

    Started by LisaB‎, 05-30-2014 12:27 AM
    • Replies: 0
    • Views: 1,257
    05-30-2014, 12:27 AM Go to last post
  29. 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: 1,857
    05-29-2014, 12:50 PM Go to last post
  30. Incremental update to *existing* Logistic Regression model?

    Hi, In our work, we have a large-scale logistic regression model we hate to train everyday. Is there a way we can somehow update the existing...

    Started by peacherwoo‎, 01-17-2011 01:47 PM
    incremental, l1 regularizer, logistic regression, update
    • Replies: 6
    • Views: 8,923
    05-28-2014, 03:18 AM Go to last post
  31. Use Autoregressive output in Linear regression

    All I am a bit new to stats, so don't know if this is possible Let's say that you have some sales data, and you also have marketing spend data....

    Started by iagainsti‎, 10-15-2013 02:06 PM
    • Replies: 2
    • Views: 1,960
    05-28-2014, 12:56 AM Go to last post
  32. Data Mining Methods with Nested Data

    I have three general questions that I am really struggling to answer: a) When we have nested data (e.g. employees nested in departments which are...

    Started by triunk‎, 05-27-2014 02:24 PM
    data mining, feature selection
    • Replies: 0
    • Views: 1,720
    05-27-2014, 02:24 PM Go to last post
  33. panel data - within-group estimate - individual fixed effects retrieved

    Hi TalkStats people! I am analyzing panel data. First, I have to decide whether to use a random or fixed effect estimator. The Hausman test...

    Started by lukeskywalker84‎, 05-27-2014 07:49 AM
    cluster, fixed effects model, panel data
    • Replies: 0
    • Views: 2,800
    05-27-2014, 07:49 AM Go to last post
  34. Heckman selection model - suitable for categorical and continuous DVs?

    Hello everyone, I am trying to figure out whether Heckman selection can be and should be used for my data. I have the same group of investors who...

    Started by oliveclaude‎, 05-26-2014 05:30 PM
    categorical dvs, heckman selection model, probit, sample selection, twostep procedure
    • Replies: 0
    • Views: 1,593
    05-26-2014, 05:30 PM Go to last post
  35. Interaction with SPSS - Interpretation of results

    Hi everyone, I am analysing different type of relations between several variables using SPSS. It includes the moderation effect of a variable on...

    Started by yumewa‎, 05-22-2014 06:55 AM
    interaction, regression, spss
    • Replies: 2
    • Views: 1,364
    05-25-2014, 11:18 AM Go to last post
  36. A question about OR

    Hello everybody I have a question about interpretation of OR in logistic regression. My result is like this: Dependent variable is satisfaction...

    Started by badibad‎, 05-21-2014 06:24 AM
    2 Pages
    1 2
    • Replies: 19
    • Views: 4,048
    05-25-2014, 02:58 AM Go to last post
  37. Logistic regression interactions cancel effects

    So this is my model with 4 blocks. In the first my main effects Then my interactions Then my controls is this the right way to do it in logistic...

    Started by Annvdb‎, 05-23-2014 01:33 AM
    • Replies: 2
    • Views: 1,548
    05-24-2014, 12:12 AM Go to last post
  38. How to interpret control variabele in logistic regression with interactions

    Hi guys, Im doing this in binary logistic regression using SPSS. So I have some main effects in a first block: the independent variabeles :...

    Started by Annvdb‎, 05-22-2014 09:09 AM
    • Replies: 4
    • Views: 1,757
    05-23-2014, 12:01 AM Go to last post
  39. Bycatch of dolphins data, zero inflated and under-dispersed - what next?

    I am investigating the factors that influence the bycatch of dolphins using a poisson GLM. My response variable is bycatch rate per unit effort and...

    Started by platanista‎, 05-21-2014 12:34 PM
    glm, poisson distribution, poisson regression
    • Replies: 2
    • Views: 1,533
    05-22-2014, 09:46 AM Go to last post
  40. Positive correlations to dependent variable, but negative coefficients

    First of all, sorry for the huge pictures, but I'm in desperate need of some input and help on the results following a study. I'm trying to interpret...

    Started by grunde88‎, 05-21-2014 08:39 PM
    coefficient, correlation, negative, positive, regression
    • Replies: 3
    • Views: 2,609
    05-22-2014, 08:38 AM Go to last post
  41. Problems with variables in multiple linear regression model.

    I currently have a dataset I'm looking at for a project. I've been asked to look at 3 variables, svi, gleason, and pgg45 and see how they're...

    Started by blahblahbla80‎, 05-21-2014 11:52 AM
    • Replies: 1
    • Views: 1,275
    05-22-2014, 08:16 AM Go to last post
  42. How do you calculate an exact p-value from the t-values?

    I have a regression model that I've run in R. x<-c(68,88,62,72,60,96,78,46,82,94,68,48)...

    Started by killbot2000‎, 05-21-2014 10:23 AM
    p-values, regression, t-values
    • Replies: 1
    • Views: 1,366
    05-21-2014, 10:32 AM Go to last post
  43. [Mplus] Decreasing iterations changes p value

    I'm doing longitudinal regression analysis using mplus, with cross-lagged models. In my analyses, I compare two models: one without constraints (H0),...

    Started by Delforterie‎, 05-20-2014 04:29 AM
    • Replies: 0
    • Views: 1,528
    05-20-2014, 04:29 AM Go to last post
  44. Interaction effects in a logit model

    Hi All Im running some logit models to investigate the determinants of a firms decision to donate/not donate to charity. My IVS include age,...

    Started by Collette‎, 05-19-2014 12:37 AM
    • Replies: 0
    • Views: 1,062
    05-19-2014, 12:37 AM Go to last post
  45. Calculate 95% CI of relative change

    Hi, I have a problem related to the calculation of 95% CI of relative change. I ran OLS regression and plan to show the absolute and relative...

    Started by Lindsy‎, 05-16-2014 01:18 PM
    • Replies: 0
    • Views: 1,337
    05-16-2014, 01:18 PM Go to last post
  46. 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
  47. Ordinal regression Analysis or Multinomial Regression for child Intelligence

    I am doubting what analyses to do with my data set. I want to see whether nutrient status can predict school achievement. I have * 6...

    Started by inge1804‎, 05-16-2014 03:09 AM
    • Replies: 0
    • Views: 1,291
    05-16-2014, 03:09 AM Go to last post
  48. Problems with pooled analysis of panel data

    Hey Statistics Experts, I am looking for the reason(s) why a pooled regression analysis of panel data is a problem. I have a dataset covering a...

    Started by Stacy_MUN‎, 05-15-2014 11:45 AM
    • Replies: 0
    • Views: 2,951
    05-15-2014, 11:45 AM Go to last post
  49. OLS-regression, relative or absolute differences?

    Hi, I am quite new at this, and I am wondering if an OLS-regression shows absolute or relative differences? If anyone could tell me this and...

    Started by andreek‎, 05-15-2014 09:08 AM
    • Replies: 0
    • Views: 1,779
    05-15-2014, 09:08 AM Go to last post
  50. 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: 1,129
    05-15-2014, 06:11 AM Go to last post
  51. Cox PH regression on fixed-interval (1, 2, 5-year) survival

    Dear all, I am co-author on a manuscript on a study which follows a group of patients from a certain diagnosis and studies risk factors for...

    Started by maksler‎, 05-15-2014 05:42 AM
    cox proportional hazard, interval survival times, logistic regression, survival analysis
    • Replies: 0
    • Views: 1,364
    05-15-2014, 05:42 AM Go to last post
  52. Constrained OLS with Moore-Pseudoinverse?

    Hello, First of all - my first post here and I haven't found a way to enter formulas. So please excuse that I linked the wiki article instead. The...

    Started by animalfarm‎, 05-15-2014 02:38 AM
    • Replies: 0
    • Views: 1,763
    05-15-2014, 02:38 AM Go to last post
  53. Categorical data tested for several factors: which test should I use?

    Hi guys, I'm currently doing a research project as part of my internship on mangrove damage along a river as a consequence of a major flood...

    Started by Robert1707‎, 05-11-2014 06:23 PM
    categorical data, dependent variables, factors, independent variable, test
    • Replies: 4
    • Views: 1,401
    05-14-2014, 11:53 AM Go to last post
  54. Logit Model - technique to eliminate covariates

    I have a model to build that employs a reference table of 5000 standard covariates that are transformed by the intersection of that reference table...

    Started by syswizard‎, 05-13-2014 10:22 AM
    covariates, logistic, logit, regression
    • Replies: 0
    • Views: 1,259
    05-13-2014, 10:22 AM Go to last post
  55. 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
  56. Fitting my predictions to linear model

    I always have X values and sometimes Y values. I plot them and get R squared ~0.9. Then I use plot equation to calculate more Y values...

    Started by Vytautas‎, 05-12-2014 07:29 AM
    • Replies: 0
    • Views: 1,042
    05-12-2014, 07:29 AM Go to last post
  57. Meta-Analysis question Z scores

    Im using data from GEO and the GEO2R online analysis tool provided by NCBI. The GEO2R analysis give adjusted P, P, t scores. I have 5-10 studies...

    Started by smectutor‎, 05-11-2014 11:00 AM
    • Replies: 0
    • Views: 2,445
    05-11-2014, 11:00 AM Go to last post
  58. Stepwise regression Model selection based on AIC index

    I have a model with 6 explanatory variables (x1,x2,x3,x4,x5,x6) and 100 observations. It is given to me that after applying Stepwise regression based...

    Started by mamus‎, 05-10-2014 10:53 AM
    • Replies: 0
    • Views: 5,318
    05-10-2014, 10:53 AM Go to last post
  59. Regression on CAR: appropriate to take Ln(CAR)?

    Hi all, I am performing a cross-sectional multiple regression with CAR as dependent variable, and some firm characteristics as independents. If I...

    Started by Niek33‎, 05-10-2014 09:43 AM
    • Replies: 0
    • Views: 1,090
    05-10-2014, 09:43 AM Go to last post
  60. Logistic model - which equation ?

    I ran a classification model to determine what diagnostic codes might be important predictors in determining the probability of death in a treated...

    Started by syswizard‎, 05-09-2014 02:54 PM
    • Replies: 0
    • Views: 1,306
    05-09-2014, 02:54 PM Go to last post

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