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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. bootstrap regression question

    I have a slightly different twist on the normal application of bootstrapping and regression. Here’s the problem… I have a population of people...

    Started by signalMTB‎, 10-19-2016 08:48 PM
    • Replies: 1
    • Views: 2,183
    10-28-2016, 08:09 AM Go to last post
  2. Relative Weights Analysis | Any good step-by-step guides out there?

    I am trying to conduct relative weights analysis on employee engagement data to prioritize where our org focuses its efforts. I'm running SPSS...

    Started by statsean‎, 10-25-2016 02:03 PM
    relative weights analysis
    • Replies: 0
    • Views: 1,155
    10-25-2016, 02:03 PM Go to last post
  3. Adding a control increases the impact of focal predictor -- sign of what?

    Hello dear forum members! I have recently been working on a mediation analysis, in which inclusion of an additional variable (say, C1) implies...

    Started by kiton‎, 10-24-2016 10:48 PM
    • Replies: 3
    • Views: 1,808
    10-25-2016, 10:17 AM Go to last post
  4. How to use Akaike's Information Criterion (AIC) for manual model reduction?

    Hi all, I wondered if anybody can explain to me how I can use the AIC for manual reduction of my GLM. I calculate a GLM with the following...

    Started by Fred.‎, 10-24-2016 06:52 AM
    • Replies: 1
    • Views: 2,471
    10-24-2016, 10:58 PM Go to last post
  5. Cross-sectional dependence, heteroskedasticity and serial correlation

    *** solved

    Started by Wooly‎, 10-24-2016 02:51 PM
    cross-sectional, econometrics
    • Replies: 0
    • Views: 865
    10-24-2016, 02:51 PM Go to last post
  6. Basic Estimation; Should I use future data?

    Hi everyone, I'm new on the forum but had a question to ask that's related to the work I currently do. I'm wondering if we should include...

    Started by Edorian‎, 10-04-2016 06:54 PM
    • Replies: 4
    • Views: 1,320
    10-23-2016, 10:24 PM Go to last post
  7. Comparison of one outcome to all the other outcomes

    Here is some data to play with set.seed(1e4) color = factor(c(rep("blue",20), rep("red",20), rep("yellow",150)),...

    Started by Remi‎, 10-23-2016 06:58 PM
    categorical vairable, hypothesis testing, logistic regression, mcmcglmm
    • Replies: 0
    • Views: 1,160
    10-23-2016, 06:58 PM Go to last post
  8. What p value to use for purposeful selection of variables for multivariate

    To do purposeful selection of variables for multivariate, can I use a p value of 0.15 cut off to select those significant variables from univariate ...

    Started by jm_manipadam‎, 10-23-2016 12:27 PM
    • Replies: 1
    • Views: 1,804
    10-23-2016, 01:28 PM Go to last post
  9. Is univariate analysis a must before binary logistic regression

    Could I enter all my independent variables directly for a binary logistic regression OR is it necessary that I should run a one way anova for...

    Started by jm_manipadam‎, 10-21-2016 07:19 PM
    • Replies: 8
    • Views: 1,760
    10-22-2016, 09:27 AM Go to last post
  10. 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 09:58 AM
    • Replies: 0
    • Views: 1,914
    10-21-2016, 09:58 AM Go to last post
  11. 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 12:35 PM
    multivariate, nominal variable, regression analysis
    • Replies: 5
    • Views: 1,157
    10-20-2016, 10:25 AM Go to last post
  12. 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 08:54 AM
    anova
    • Replies: 6
    • Views: 1,586
    10-19-2016, 07:54 AM Go to last post
  13. 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 01:50 PM
    doe
    • Replies: 0
    • Views: 1,135
    10-18-2016, 01:50 PM Go to last post
  14. 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 10:45 AM
    • Replies: 10
    • Views: 2,704
    10-17-2016, 01:21 PM Go to last post
  15. Multiple Regression study

    delete this

    Started by Giaco‎, 10-17-2016 02:52 AM
    • Replies: 0
    • Views: 1,109
    10-17-2016, 02:52 AM Go to last post
  16. 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 05:20 AM
    logistic regression, multicollinearity
    • Replies: 2
    • Views: 1,462
    10-16-2016, 01:52 AM Go to last post
  17. 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 06:35 PM
    • Replies: 1
    • Views: 901
    10-15-2016, 09:42 PM Go to last post
  18. 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 11:55 AM
    • Replies: 14
    • Views: 2,922
    10-15-2016, 10:50 AM Go to last post
  19. 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 06:49 PM
    exploratory, lasso, linear regression, predictors, stepwise regression
    • Replies: 2
    • Views: 969
    10-14-2016, 02:31 PM Go to last post
  20. 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 05:49 PM
    • Replies: 1
    • Views: 1,210
    10-12-2016, 08:48 PM Go to last post
  21. 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 11:36 AM
    exponential regression, linear regression
    • Replies: 0
    • Views: 1,083
    10-12-2016, 11:36 AM Go to last post
  22. 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 03:56 AM
    • Replies: 1
    • Views: 873
    10-12-2016, 08:12 AM Go to last post
  23. 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 03:03 AM
    • Replies: 0
    • Views: 976
    10-12-2016, 03:03 AM Go to last post
  24. 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 12:33 PM
    • Replies: 3
    • Views: 1,639
    10-11-2016, 01:55 PM Go to last post
  25. 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 11:36 AM
    • Replies: 1
    • Views: 1,009
    10-11-2016, 11:48 AM Go to last post
  26. 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 08:27 AM
    • Replies: 0
    • Views: 1,089
    10-11-2016, 08:27 AM Go to last post
  27. 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 09:32 PM
    multiple imputations, regression analysis
    • Replies: 5
    • Views: 1,389
    10-10-2016, 07:45 PM Go to last post
  28. 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 09:47 AM
    glm, log link, poisson
    • Replies: 2
    • Views: 1,580
    10-10-2016, 11:15 AM Go to last post
  29. 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 11:13 AM
    • Replies: 0
    • Views: 1,772
    10-10-2016, 11:13 AM Go to last post
  30. 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 12:44 PM
    additivem, regression
    • Replies: 8
    • Views: 2,022
    10-10-2016, 07:50 AM Go to last post
  31. 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 03:33 PM
    • Replies: 0
    • Views: 1,530
    10-07-2016, 03:33 PM Go to last post
  32. 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 09:39 AM
    2 Pages
    1 2
    rho/beta conflict, suppression
    • Replies: 23
    • Views: 55,483
    10-07-2016, 04:31 AM Go to last post
  33. 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 08:33 AM
    differencing, linear regression, non-stationarity, ols, stationarity
    • Replies: 0
    • Views: 2,687
    10-06-2016, 08:33 AM Go to last post
  34. 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 09:01 AM
    • Replies: 0
    • Views: 967
    10-05-2016, 09:01 AM Go to last post
  35. 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 12:31 AM
    • Replies: 3
    • Views: 2,816
    10-04-2016, 11:29 PM Go to last post
  36. 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 11:29 AM
    logistic regression, odds ratio
    • Replies: 3
    • Views: 1,066
    10-02-2016, 05:53 AM Go to last post
  37. 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 02:57 AM
    • Replies: 3
    • Views: 1,247
    09-30-2016, 02:41 PM Go to last post
  38. 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 11:59 AM
    • Replies: 9
    • Views: 2,698
    09-28-2016, 06:38 PM Go to last post
  39. 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 11:52 AM
    • Replies: 0
    • Views: 3,097
    09-28-2016, 11:52 AM Go to last post
  40. 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 08:54 AM
    missing values, regression model
    • Replies: 2
    • Views: 1,415
    09-27-2016, 06:54 AM Go to last post
  41. 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 02:48 AM
    • Replies: 5
    • Views: 1,923
    09-26-2016, 05:40 PM Go to last post
  42. 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 02:07 PM
    anova, gls, regression analysis
    • Replies: 5
    • Views: 1,008
    09-22-2016, 01:07 PM Go to last post
  43. 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, 09-18-2016 11:44 PM
    • Replies: 0
    • Views: 1,974
    09-18-2016, 11:44 PM Go to last post
  44. 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 06:50 AM
    • Replies: 3
    • Views: 2,784
    09-17-2016, 12:10 PM Go to last post
  45. Exclamation Multivariate models - standard error help

    I have 2 multivariate models created in R concerning nutrition Model 1 = -11.5±1.68 + 0.56±0.562 Intake + 16.6±0.165 Potassium concentration ...

    Started by Ireeland‎, 09-16-2016 06:14 AM
    model, multivariate, standard error
    • Replies: 0
    • Views: 1,044
    09-16-2016, 06:14 AM Go to last post
  46. 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 06:46 AM
    regression
    • Replies: 1
    • Views: 1,387
    09-14-2016, 09:38 AM Go to last post
  47. 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 08:19 AM
    • Replies: 0
    • Views: 978
    09-11-2016, 08:19 AM Go to last post
  48. 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 07:01 AM
    • Replies: 1
    • Views: 1,665
    09-11-2016, 07:42 AM Go to last post
  49. 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 10:26 AM
    • Replies: 6
    • Views: 1,113
    09-09-2016, 03:09 PM Go to last post
  50. 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 05:52 AM
    • Replies: 0
    • Views: 1,050
    09-09-2016, 05:52 AM Go to last post
  51. 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 12:40 PM
    • Replies: 2
    • Views: 1,480
    09-07-2016, 02:26 PM Go to last post
  52. 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 10:35 AM
    categorial analysis, multiple regression
    • Replies: 4
    • Views: 1,076
    09-05-2016, 07:16 PM Go to last post
  53. 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 06:24 PM
    • Replies: 5
    • Views: 1,885
    09-05-2016, 09:16 AM Go to last post
  54. 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 10:41 AM
    • Replies: 9
    • Views: 1,438
    09-03-2016, 03:05 AM Go to last post
  55. 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 03:47 AM
    • Replies: 1
    • Views: 654
    09-02-2016, 04:39 PM Go to last post
  56. 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 12:13 PM
    anova, help me, help needed, linear regression, model
    • Replies: 0
    • Views: 923
    09-02-2016, 12:13 PM Go to last post
  57. 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 04:44 AM
    degrees of freedom, dof, model
    • Replies: 0
    • Views: 851
    09-01-2016, 04:44 AM Go to last post
  58. 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 07:48 AM
    • Replies: 1
    • Views: 1,015
    08-31-2016, 10:17 PM Go to last post
  59. 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 05:14 AM
    • Replies: 2
    • Views: 1,142
    08-31-2016, 06:17 AM Go to last post
  60. 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 11:42 AM
    • Replies: 2
    • Views: 1,058
    08-30-2016, 08:24 PM Go to last post

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