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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. How to handle non normally distributed residuals

    Currently we are working with a GEE model, at this point we are having doubts about our residuals which are not normally distributed. Log...

    Started by Cintia‎, 10-21-2016 10:58 AM
    • Replies: 0
    • Views: 259
    10-21-2016, 10:58 AM Go to last post
  2. Post Help with regression and related nominal values

    Hey all. I'd like some input on a regression analysis. I have data that measures the reactions of individuals to a number of objects and to a number...

    Started by infiniteline‎, 10-15-2016 01:35 PM
    multivariate, nominal variable, regression analysis
    • Replies: 5
    • Views: 381
    10-20-2016, 11:25 AM Go to last post
  3. GLM on non-linear/curvilinear data

    Dear all! I’m sure somebody of you will help me with my non-linear data-problem. I measured a fitness correlate of an animal (response variable)...

    Started by Fred.‎, 09-30-2016 09:54 AM
    anova
    • Replies: 6
    • Views: 582
    10-19-2016, 08:54 AM Go to last post
  4. Defining relation of a fold over design

    Dear All, I am reading the book DC Montgomery on my own. The book says that the defining relation for a foldover design will have L + U - 1 words...

    Started by ashimkapoor‎, 10-18-2016 02:50 PM
    doe
    • Replies: 0
    • Views: 236
    10-18-2016, 02:50 PM Go to last post
  5. Heteroscedastcty with large number of cases

    I ignore here that I have populations commonly :p I have heard that heteroscedastcity is not an issue when you have large sample sizes (I have ten...

    Started by noetsi‎, 10-14-2016 11:45 AM
    • Replies: 10
    • Views: 499
    10-17-2016, 02:21 PM Go to last post
  6. Multiple Regression study

    delete this

    Started by Giaco‎, 10-17-2016 03:52 AM
    • Replies: 0
    • Views: 292
    10-17-2016, 03:52 AM Go to last post
  7. Multicollinearity problem in binary logistic regression

    I'd like to ask for some help with a binary logistic regression. In SPSS I am trying to build a binary logistic regression with 4 independent...

    Started by kranas‎, 10-15-2016 06:20 AM
    logistic regression, multicollinearity
    • Replies: 2
    • Views: 353
    10-16-2016, 02:52 AM Go to last post
  8. Please Help Weird Question

    I have a very weird question which I guess is not replicated hopefully I can get an answer. when using the multiple regression analysis in excel via...

    Started by naderkamal188‎, 10-15-2016 07:35 PM
    • Replies: 1
    • Views: 288
    10-15-2016, 10:42 PM Go to last post
  9. Type 1 error in regression with entire populations

    I have read that you are not supposed to keep choosing different levels of the categorical variable to be the reference level, because this can cause...

    Started by noetsi‎, 10-13-2016 12:55 PM
    • Replies: 14
    • Views: 629
    10-15-2016, 11:50 AM Go to last post
  10. Many predictors relative to cases, want to identify interesting ones

    I've been helping a colleague with his research project. He is looking at the trustworthiness of profile texts. He is analyzing text entries using...

    Started by Junes‎, 10-13-2016 07:49 PM
    exploratory, lasso, linear regression, predictors, stepwise regression
    • Replies: 2
    • Views: 291
    10-14-2016, 03:31 PM Go to last post
  11. Interaction Terms in Linear regression

    In R I used the linear regression call for three variables: y, x, and c Y and X are numeric where C is a dichotomous {0,1}. X and C are the...

    Started by Z-Statistic‎, 10-12-2016 06:49 PM
    • Replies: 1
    • Views: 262
    10-12-2016, 09:48 PM Go to last post
  12. Linear Regression coeffiecients used in Exponential Regression

    I have a decay curve (y) with values 1, 0.75,0.64,0.54,0.46. The x values are 1,2,3,4,5. First a simple linear regression was performed (y =mx + b)....

    Started by Haripi314‎, 10-12-2016 12:36 PM
    exponential regression, linear regression
    • Replies: 0
    • Views: 236
    10-12-2016, 12:36 PM Go to last post
  13. Controlling for a variable in multiple regression creates significance of another var

    I have continuous variables A, B and C. A/B correlates with C significantly. Neither A, B or A*B correlates significantly with C. In multiple...

    Started by trexter‎, 10-12-2016 04:56 AM
    • Replies: 1
    • Views: 255
    10-12-2016, 09:12 AM Go to last post
  14. Static & Dynamic variables in one model

    Hello! My name is Valentina and I am a Master student, currently working on my MSc thesis. I am examining the effect of Politicians on the board...

    Started by monicanic‎, 10-12-2016 04:03 AM
    • Replies: 0
    • Views: 224
    10-12-2016, 04:03 AM Go to last post
  15. Multivariate ''binary'' logistic regression...???

    Hello all, My name is Nick. I am a doctor and i would appreciate any of your help in the above problem. Recently, on purpose to delineate/propose a...

    Started by nok‎, 10-11-2016 01:33 PM
    • Replies: 3
    • Views: 281
    10-11-2016, 02:55 PM Go to last post
  16. Regression Lines

    Can someone please explain this to me In a random sample of 40 students, the mean number of hours spent studying is 7.5 with a standard deviation...

    Started by Ahmed.abdullah‎, 10-11-2016 12:36 PM
    • Replies: 1
    • Views: 240
    10-11-2016, 12:48 PM Go to last post
  17. Country Variable

    Hi Stata Experts, I have a question concerning an idea for my thesis. I have firm-specific data (assets, sales, income etc.) for different firms...

    Started by corazon92‎, 10-11-2016 09:27 AM
    • Replies: 0
    • Views: 229
    10-11-2016, 09:27 AM Go to last post
  18. Regression after multiple imputation

    Hello every one. I want to perform simple binary logistic regression after multiple imputation but I constantly get this message and the execution of...

    Started by johnstatistic‎, 10-05-2016 10:32 PM
    multiple imputations, regression analysis
    • Replies: 5
    • Views: 461
    10-10-2016, 08:45 PM Go to last post
  19. Cool Approximating the probability of an event occuring from the output of a Poisson GLM

    Hi all, I have some data that includes the output of a Poisson Log Link model, that aims to predict how many times an event will occur over the...

    Started by skinicod‎, 10-08-2016 10:47 AM
    glm, log link, poisson
    • Replies: 2
    • Views: 368
    10-10-2016, 12:15 PM Go to last post
  20. Spearman's Correlation and Wilcoxon Signed Rank Test

    Hey guys! I have an urgent question for my master thesis. In my thesis, I'm comparing 4 performance metrics. My data consists of 100 funds and...

    Started by leomessi178‎, 10-10-2016 12:13 PM
    • Replies: 0
    • Views: 222
    10-10-2016, 12:13 PM Go to last post
  21. Regression with additive and multiplicative predictors

    Hi, we are analyzing pollutants in mussels with regression models. Let's say we have only the two predictors (1) "year" and (2) "month". However,...

    Started by mmercker‎, 10-08-2016 01:44 PM
    additivem, regression
    • Replies: 8
    • Views: 474
    10-10-2016, 08:50 AM Go to last post
  22. OLS Regression w/ longitudinal data

    I have a longitudinal data set with two waves. Several variables exist in both waves. I want to examine the following question with and OLS...

    Started by ReneRopac‎, 10-07-2016 04:33 PM
    • Replies: 0
    • Views: 241
    10-07-2016, 04:33 PM Go to last post
  23. Postive correlation but negative coefficient in regression??

    Im a little confused by some results I have..... I have two predictor variables and an outcome variable. The first predictor is positively...

    Started by statto‎, 08-20-2011 10:39 AM
    2 Pages
    1 2
    rho/beta conflict, suppression
    • Replies: 23
    • Views: 40,389
    10-07-2016, 05:31 AM Go to last post
  24. Exclamation Stationary data first after the 2-order/3-order difference on LN(variable)

    I want to make an Linear Regression. Dependent variable: GDP Independent variables: Net exports and Debt and some control variables All variables...

    Started by APA‎, 10-06-2016 09:33 AM
    differencing, linear regression, non-stationarity, ols, stationarity
    • Replies: 0
    • Views: 407
    10-06-2016, 09:33 AM Go to last post
  25. What information can we get from the table of deviance residual (regression)?

    Hello, I was wondering what's the importance and substantive interpretation of the table of deviance residual in the context of (logistic)...

    Started by gianmarco‎, 10-05-2016 10:01 AM
    • Replies: 0
    • Views: 229
    10-05-2016, 10:01 AM Go to last post
  26. help me wid this question

    hi everyone i want the solution of this question before sunday i will post the regression table here just help me in answering the questions

    Started by softy‎, 10-01-2016 01:31 AM
    • Replies: 3
    • Views: 647
    10-05-2016, 12:29 AM Go to last post
  27. Question Large odds ratio in binary logistic regression/big scale difference of variables

    I'd like to ask for some help with a binary logistic regression. In SPSS I am building a binary logistic regression with 4 independent continuous...

    Started by kranas‎, 10-01-2016 12:29 PM
    logistic regression, odds ratio
    • Replies: 3
    • Views: 377
    10-02-2016, 06:53 AM Go to last post
  28. calculation of the average leverage when predictor(s) is categorical

    Hello, I was reading different resources about regression diagnostic, in particular for Logistic Regression. As for leverage, the sources suggest...

    Started by gianmarco‎, 09-30-2016 03:57 AM
    • Replies: 3
    • Views: 304
    09-30-2016, 03:41 PM Go to last post
  29. Poisson regression for Count data

    Hello Every one, I'am working in Toxicological lab, Where we deal with animal data. I have to perform Poisson Regression for count data but i...

    Started by umang49‎, 09-27-2016 12:59 PM
    • Replies: 9
    • Views: 528
    09-28-2016, 07:38 PM Go to last post
  30. Correlation VS linear regression using proportional data

    Hi, I was hoping someone may be able to assist. I have discussed this with two people who understand a great deal about stats, although I read...

    Started by jonpaul31‎, 09-28-2016 12:52 PM
    • Replies: 0
    • Views: 348
    09-28-2016, 12:52 PM Go to last post
  31. Dealing with missing values

    I am analyzing the data of a cohort study.There are three sets of paired data (same measures on same subjects in 3 different point of time). The...

    Started by johnstatistic‎, 09-23-2016 09:54 AM
    missing values, regression model
    • Replies: 2
    • Views: 367
    09-27-2016, 07:54 AM Go to last post
  32. Not significant coefficients in Logit, but in Probit they are

    Hello, I would like to ask you for a help. I have a simple model with one explanatory variable and with a binary dependend variable. Explanatory...

    Started by tradermartin‎, 09-24-2016 03:48 AM
    • Replies: 5
    • Views: 571
    09-26-2016, 06:40 PM Go to last post
  33. Generalized Least Squares (and ANOVA type III)

    Dear all, I ran a type III ANOVA on a model of this kind: gls(y~x1+x2+x3). I found that both x2 and x3 are significant. However, if I drop x3 from...

    Started by sff.cardoso‎, 09-21-2016 03:07 PM
    anova, gls, regression analysis
    • Replies: 5
    • Views: 382
    09-22-2016, 02:07 PM Go to last post
  34. Eviews 9 Tutorial Fixed Effects And Random Effects Two Stage Least Squares

    https://www.youtube.com/watch?v=M8OuLQYHDrM Fixed Effects And Random Effects Two Stage Least Squares (2SLS) regression analysis is a statistical...

    Started by OlhDt_semarang‎, 09-19-2016 12:44 AM
    • Replies: 0
    • Views: 313
    09-19-2016, 12:44 AM Go to last post
  35. Time series or not?

    I am working with three series of 33 yearly observations each. My goal is to understand causality and the long run relationships between them; one of...

    Started by verylost‎, 09-17-2016 07:50 AM
    • Replies: 3
    • Views: 491
    09-17-2016, 01:10 PM Go to last post
  36. Exclamation Multivariate models - standard error help

    I have 2 multivariate models created in R concerning nutrition Model 1 = -11.51.68 + 0.560.562 Intake + 16.60.165 Potassium concentration ...

    Started by Ireeland‎, 09-16-2016 07:14 AM
    model, multivariate, standard error
    • Replies: 0
    • Views: 279
    09-16-2016, 07:14 AM Go to last post
  37. Logistic Regression of Weekly NFL Data

    This guy uses a type of regression to predict NFL games: http://trevorbischoff.com/amos-2016-nfl-predictor/

    Started by LeeBalto‎, 09-14-2016 07:46 AM
    regression
    • Replies: 1
    • Views: 331
    09-14-2016, 10:38 AM Go to last post
  38. Regression analysis and reflective vs. formative scales

    Hey there, I am using multiple regression analysis to analyse the data of an empirical study in the behavioural science. One of the scales I'm...

    Started by timsad‎, 09-11-2016 09:19 AM
    • Replies: 0
    • Views: 286
    09-11-2016, 09:19 AM Go to last post
  39. Same variable on both sides - how to resolve this?

    I have a regression which is supposed to capture the effect of R&&D expenditures on stock returns, given some controllers X1, X2 and volatility, i.e....

    Started by Cupcaker‎, 09-10-2016 08:01 AM
    • Replies: 1
    • Views: 324
    09-11-2016, 08:42 AM Go to last post
  40. What Kind of Regression Do I Need for This?

    I have a data like this. I need to find 7 predictors' coefficients for the best model to predict dependent. It can only be 1 and 0. A B ...

    Started by permaximum‎, 09-09-2016 11:26 AM
    • Replies: 6
    • Views: 407
    09-09-2016, 04:09 PM Go to last post
  41. Forecasting with Google Trends

    Hi Guys, I try to investigate wether Google Search data can improve a forecasting model for the German housing market regarding prices and...

    Started by Masimo‎, 09-09-2016 06:52 AM
    • Replies: 0
    • Views: 243
    09-09-2016, 06:52 AM Go to last post
  42. Research Help_Regression Analysis_Log Transformation for Better Fits

    Dear All, I'm doing a research on the estimation of "Tunnel Cost" for which I carried out some regression analysis based on data of 30 tunnel...

    Started by chro‎, 09-07-2016 01:40 PM
    • Replies: 2
    • Views: 306
    09-07-2016, 03:26 PM Go to last post
  43. Categorical multiple linear regression analysis - what would you do?

    Noob here. I'm doing a project to determine how different factors (race, insurance status) are related to distance from pediatric urologists. I'm...

    Started by gliomanerd‎, 09-01-2016 11:35 AM
    categorial analysis, multiple regression
    • Replies: 4
    • Views: 531
    09-05-2016, 08:16 PM Go to last post
  44. VIF issues

    Good afternoon, I ran a hierarchical regression model, (main effects in step 1, two-way in step 2 and three-way in step 3). My VIF in step 1 are...

    Started by Julie26‎, 09-03-2016 07:24 PM
    • Replies: 5
    • Views: 538
    09-05-2016, 10:16 AM Go to last post
  45. Binary Logistic Regression Assumptions Testing

    Hi there, I am having difficulties testing some of the assumptions while conducting a binary logistic regression for an exploratory study. 1....

    Started by ting01‎, 08-20-2016 11:41 AM
    • Replies: 9
    • Views: 616
    09-03-2016, 04:05 AM Go to last post
  46. Need some ideas

    I need to present something, anything and if anyone has any idea what I can do with this data and how I can pitch it, it would be appreciated. ...

    Started by zayfran31189‎, 09-02-2016 04:47 AM
    • Replies: 1
    • Views: 259
    09-02-2016, 05:39 PM Go to last post
  47. Cave Temperature Analysis, Real life management issues.

    Hi, I've taken math course's up to Calc III and Diff Eq, but never a statistics course. So I was hoping this forum could help me. I am working...

    Started by geoskimoto‎, 09-02-2016 01:13 PM
    anova, help me, help needed, linear regression, model
    • Replies: 0
    • Views: 260
    09-02-2016, 01:13 PM Go to last post
  48. Model conception

    Hello! I have a basic stats question: I want to model a phenomenon, and estimate parameters. How many observations would I need, to be as...

    Started by BioLion‎, 09-01-2016 05:44 AM
    degrees of freedom, dof, model
    • Replies: 0
    • Views: 226
    09-01-2016, 05:44 AM Go to last post
  49. Multivariate responses

    Hey guys, Needed some help on this. Say there is a question what would you spend on : 1) Car 2) House 3) Wedding 4) *** 5) ***

    Started by zayfran31189‎, 08-31-2016 08:48 AM
    • Replies: 1
    • Views: 301
    08-31-2016, 11:17 PM Go to last post
  50. Question Interaction between categorical and scale variables?

    Hi, I'm supposed to conduct a regression analysis between two variables, controlling for a third. My issue is that all of the output I'm getting in...

    Started by phoela‎, 08-31-2016 06:14 AM
    • Replies: 2
    • Views: 258
    08-31-2016, 07:17 AM Go to last post
  51. Regression with data from different sources: Nested fixed effects possible?

    Assume I have collected my data with 3 different methods, each method share the same outcome Y as well as the predictor X. I am interested in the...

    Started by mmercker‎, 08-25-2016 12:42 PM
    • Replies: 2
    • Views: 335
    08-30-2016, 09:24 PM Go to last post
  52. SST = SSE + SSR, proof

    Hi, I've been trying to figure out for a long time how to derive the starting equation of the proof. I have no idea how to come up with it. It's...

    Started by stephen123456‎, 08-27-2016 05:25 PM
    • Replies: 2
    • Views: 1,050
    08-29-2016, 11:39 AM Go to last post
  53. Comparing fit of GLM to OLS regression

    Hello talkstat. First post in this magnificent forum! In my master thesis I'm estimating health care expenses to patients, who has experienced...

    Started by Steinberg‎, 08-24-2016 04:36 AM
    fit, glm, ols, transforming
    • Replies: 8
    • Views: 498
    08-29-2016, 07:28 AM Go to last post
  54. Question Mixed Logit Regression Problem with AIC / BIC

    Hi, I am new to this forum and have trouble with my mixed logit regression model. I have conducted an experiment with 169 participants who each...

    Started by Maha1987‎, 08-29-2016 07:22 AM
    aic, bic, genlinmixed, mixed logit
    • Replies: 0
    • Views: 241
    08-29-2016, 07:22 AM Go to last post
  55. Why do you divide by n-1 to find sample variance? Linear regression

    Okay I have very limited knowledge on statistics but I'm wondering why the hell you divide the numerator in the sample variance formula by n-1. I've...

    Started by zakqux93‎, 08-28-2016 04:07 PM
    • Replies: 2
    • Views: 396
    08-28-2016, 04:31 PM Go to last post
  56. Question R-squared and Standard Error of weights focuses too much on centre of distribution

    Hello, I got slides from A.Pelsser presentation about replicating portfolios and there was a claim that R-squared na Standard Error of Weights...

    Started by Rutra1992‎, 08-28-2016 05:42 AM
    r-squard, replicating portfolios, standard error of weights
    • Replies: 0
    • Views: 277
    08-28-2016, 05:42 AM Go to last post
  57. Lightbulb Regression Analysis thoughts - Could I model my data this particular way?

    Hello, Looking for a guidng hand with a regression problem that I have managed to create. Apologies for my lack of statistical knowledge, but if...

    Started by Smith_83‎, 08-26-2016 12:37 PM
    regression
    • Replies: 1
    • Views: 340
    08-26-2016, 02:20 PM Go to last post
  58. Forecasting, what method to use

    I am stuck on what statistical analysis method I can use to forecast using past data. This is for a Hotel that has been open for four months, I...

    Started by Lukejames‎, 08-26-2016 08:56 AM
    • Replies: 1
    • Views: 297
    08-26-2016, 09:53 AM Go to last post
  59. Necessary to rank transform ANCOVA?

    Hi all, I'm hoping you can shed some light. My data are non-parametric, so I thought I'd have to use ranks in order to do ANCOVA, but then I read...

    Started by StatsN00bie‎, 08-15-2016 07:21 AM
    2 Pages
    1 2
    • Replies: 17
    • Views: 741
    08-25-2016, 02:10 AM Go to last post
  60. Variance of single element of random effects in linear mixed model

    Hi there, I have recently been working a bit with linear mixed model and in order to enhance my understanding of those, I would like to know the...

    Started by lo2‎, 08-14-2016 06:11 AM
    • Replies: 4
    • Views: 426
    08-24-2016, 11:38 AM Go to last post

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