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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Repeated measures regression

    Hi, I have data from an experiment with a continuous dependt variable and two dicotomous independent variable. All measures are repeated within...

    Started by espenmei‎, 02-20-2013 03:43 PM
    regression analysis, repeated measures
    • Replies: 0
    • Views: 1,519
    02-20-2013, 03:43 PM Go to last post
  2. change in significance level (univariate vs multivariate)

    I have 3 independent variables, X, Y and Z when I do univariate regression on each of them, the t-statistics are -4.7, 1.8 and 2.2, respectively....

    Started by espes‎, 10-24-2011 06:35 PM
    • Replies: 4
    • Views: 5,040
    10-25-2011, 10:09 AM Go to last post
  3. Question Interpreting interaction between dummy IV and continuous moderator with log DV

    Hello Community, I urgently need your help to read the results of my regression analysis for my master thesis, which I need to hand in next week....

    Started by esprit88‎, 08-01-2013 04:19 PM
    continuous moderator, dummy, interaction effect, regression analysis
    • Replies: 13
    • Views: 3,283
    08-02-2013, 09:18 AM Go to last post
  4. Interpreting of hypothesis prediction after reversed relationship

    Dear Community, I am currently facing a big issue with regard to my master thesis. I developed following hypotheses: Hypothesis 1: Managersí...

    Started by esprit88‎, 08-10-2013 05:39 AM
    • Replies: 1
    • Views: 921
    08-10-2013, 09:54 AM Go to last post
  5. help deciphering - hierarchical regression report

    Hi, I've just started by statistical analysis stage and I've had some strange outputs I was hoping someone could help me with. Two personality...

    Started by estelle12‎, 05-07-2014 12:08 PM
    hierarchical model, hierarchical regression
    • Replies: 1
    • Views: 1,194
    05-07-2014, 01:38 PM Go to last post
  6. Bayesian regression

    it's a actually an informatics math related question. But i want to start here to get a first opinion. As a software engineer and cryptographer, I'm...

    Started by ethomas‎, 01-07-2015 01:16 PM
    • Replies: 0
    • Views: 1,039
    01-07-2015, 01:16 PM Go to last post
  7. equation -regression analysis. Please Help.

    Please see below and let me know if the general equations for a straight line match with the following research questions. Research Question 1....

    Started by eunkum‎, 11-27-2013 03:10 PM
    • Replies: 0
    • Views: 1,147
    11-27-2013, 03:10 PM Go to last post
  8. DV Transformation Changes Sign of Correlation in Regression

    Hi Everybody, I've run into an issue with my data and was hoping this community might have some ideas. I am running several multiple...

    Started by evaporated3‎, 04-06-2010 10:44 AM
    • Replies: 0
    • Views: 2,546
    04-06-2010, 10:44 AM Go to last post
  9. 3 way interaction urgent :(

    Hi I have a question about 3 way interaction. I have two IV: - inside out human resource planning - soft human resource planning the DV is...

    Started by evelien1987‎, 08-06-2010 07:47 AM
    • Replies: 1
    • Views: 2,630
    08-06-2010, 08:12 PM Go to last post
  10. Help with running two level binary logistic regression model

    Hello everyone, It is my first time when I am performing quantitative research. My master thesis is about determining specialist level and...

    Started by Evelina‎, 05-28-2015 09:35 AM
    • Replies: 1
    • Views: 1,111
    05-28-2015, 11:12 AM Go to last post
  11. Mediation reporting

    I was wondering if someone could please tell me if I am supposed to report either unstandardized coefficients (b) or the standardized coefficient...

    Started by evenflow‎, 01-05-2013 07:01 PM
    • Replies: 0
    • Views: 1,172
    01-05-2013, 07:01 PM Go to last post
  12. Find the regression equation

    Hi I have problem and I want you to help me This problem should use by Minitab.... In a study in collaboration with the Engineering...

    Started by evian‎, 05-28-2012 01:52 AM
    • Replies: 5
    • Views: 2,639
    05-28-2012, 08:06 AM Go to last post
  13. multiple linear regression rejected - searching for alternative model

    Hey there! I am currently working on a regression model for a logistics problem which includes the transport time as dependent variable and a...

    Started by evident‎, 03-16-2012 09:54 AM
    • Replies: 1
    • Views: 1,731
    03-21-2012, 11:29 PM Go to last post
  14. Partial R squares

    Is there a way to generate partial r-squares (automatically) in multiple regression? Assume a Model Y=X1 X2 X3. GLM produces estimates of R square...

    Started by evm‎, 03-25-2008 12:06 PM
    • Replies: 3
    • Views: 8,549
    03-25-2008, 03:58 PM Go to last post
  15. Year dummies in Fixed Effects estimation with panel data

    Quick question. I'm working with an unbalanced international dataset. I'm using fixed effects because (at least mostly because) I want to allow for...

    Started by ewalcott‎, 03-19-2013 08:40 AM
    dummy variables, fixed effects, panel data
    • Replies: 0
    • Views: 2,559
    03-19-2013, 08:40 AM Go to last post
  16. Hlm?

    I am working with a large data set, n = 1200+ average course grades culled from over 15,000 students from a school. I ran a regression using average...

    Started by ewblack‎, 12-09-2008 01:23 PM
    • Replies: 9
    • Views: 4,836
    12-17-2008, 12:21 PM Go to last post
  17. reg. ana. F sig undefined but p values are ok ?

    Hi people, this is my first message. I try to use regression in my studies and there are some difficulties that I met. I use excel for reg...

    Started by ex902‎, 07-27-2010 06:31 AM
    • Replies: 0
    • Views: 2,663
    07-27-2010, 06:31 AM Go to last post
  18. Assessing the Fit of a model: multiple regression

    Hi Guys I'm not sure whether this question belongs to this section or in SAS. I'm using SAS to create a regression model for a response variable...

    Started by excelmac‎, 09-29-2013 03:32 PM
    • Replies: 9
    • Views: 1,858
    10-09-2013, 08:41 AM Go to last post
  19. Is Slope A statistically different from Slope B? *URGENT*

    Hey everyone, Really need urgent help here. I am trying to determine if the change in the slope of a line (beta) is statistically significant...

    Started by explicit‎, 03-06-2012 01:25 AM
    • Replies: 7
    • Views: 24,431
    03-06-2012, 11:39 AM Go to last post
  20. Question Classification Rate of Multivariate Logistic Regression

    Hello, I'm running a binary (2 groups), multivariate (multiple predictors) logistic regression analysis, and would like to test the classification...

    Started by eyeballjunk‎, 09-28-2009 09:10 AM
    • Replies: 1
    • Views: 5,011
    09-29-2009, 03:01 PM Go to last post
  21. Timeseries: sig. Ljung-box Q, but residuals normally distributed

    Hi all, Hope someone can help me with the following problem/question I encounter. I'm working with a monthly time-serie consisting of 36 data...

    Started by Eyecatcher‎, 05-03-2012 11:02 AM
    exponential smoothing, ljung-box q, timeseries
    • Replies: 4
    • Views: 7,521
    05-03-2012, 12:15 PM Go to last post
  22. Imputing missing values, and simulating the dependent variable in a regression

    Hi all, I've been working on filling in some missing income values in a data set using multiple imputation. To check the validity of my model, I...

    Started by eyesack_kn‎, 06-08-2012 05:08 PM
    • Replies: 0
    • Views: 2,573
    06-08-2012, 05:08 PM Go to last post
  23. Special case of independent variable

    Hi guys, I have a question on how to deal with a specific independent variable in a logistic regression model. The independent variable is a...

    Started by eylan‎, 05-06-2011 02:31 AM
    • Replies: 0
    • Views: 1,706
    05-06-2011, 02:31 AM Go to last post
  24. multivarient nonlinear regression in SPSS

    is there are way of doing this in SPSS? I have looked around and come to a blank... I need to derive an equation to describe the (most likely...

    Started by E_J‎, 09-21-2010 08:58 AM
    • Replies: 0
    • Views: 3,846
    09-21-2010, 08:58 AM Go to last post
  25. Reporting variables into main equation after sqrt or log transformation

    Hi Everybody, If I am creating a multiple regression model such as Y = 3 + 1.5apple + 2melon and some of the indipendent variables underwent a...

    Started by F111‎, 10-23-2014 05:12 PM
    heteroskeds
    • Replies: 0
    • Views: 1,203
    10-23-2014, 05:12 PM Go to last post
  26. Logistic Regression interpretation help

    Hello I'm working on a project and had some debates with my colleagues on logistic regression model. Hope someone here can clarify for us. Let's...

    Started by factorregression‎, 05-18-2016 01:14 PM
    logisitic regression
    • Replies: 0
    • Views: 938
    05-18-2016, 01:14 PM Go to last post
  27. Improving an estimate of a mean value

    Hello, I have a dataset that has 10 independent descriptors and one dependent statistic, b. Only a few of the descriptors are quantitative and...

    Started by FailedStats101‎, 02-28-2006 08:19 AM
    • Replies: 3
    • Views: 3,145
    02-28-2006, 11:35 PM Go to last post
  28. Lightbulb Dependent variable in regression model - sum of factors?

    I got across below article due to one of our student used it for the brand loyalty measure. ...

    Started by Fairy‎, 06-17-2014 04:37 AM
    • Replies: 1
    • Views: 1,194
    06-17-2014, 05:30 AM Go to last post
  29. HELP regression with percentage and current $

    Hi i am trying to construct a regression with inflation as my dependent variable and gdp and income as my independent, but i am not sure if it can...

    Started by faizan123‎, 01-12-2013 08:37 PM
    dependent, inflation, percentage, regression, regression analysis
    • Replies: 6
    • Views: 2,447
    01-30-2013, 10:17 AM Go to last post
  30. VECM Help Required

    Hi im constructing a vecm regression and need help interpreting the results. it would be much appreciated if you could helps me I'm testing...

    Started by faizan123‎, 01-30-2013 12:35 PM
    coefficient, interpreting regression, interpreting results, vec, vecm
    • Replies: 0
    • Views: 1,840
    01-30-2013, 12:35 PM Go to last post
  31. Variable is significant in OLS regression, but insignificant in Probit marginal effec

    I am investigating the determinants of wage. With the dataset I ran a pooled OLS regression, and a Probit marginal effects regression looking at...

    Started by Falc‎, 03-18-2013 04:35 AM
    • Replies: 2
    • Views: 2,847
    03-18-2013, 02:31 PM Go to last post
  32. Generalized Cross Validation

    Hello Guys, I'm runing MATLAB code on SVD with roughness penalties. When I use GCV to choose the parameter, I have a question regarding the...

    Started by FantasyCC‎, 04-05-2011 08:04 AM
    • Replies: 0
    • Views: 3,265
    04-05-2011, 08:04 AM Go to last post
  33. Regression with arctan function

    Hello, I am currently working on a prepayment model for mortgage loans. For this I'd like to use a modified version of the Richard & Roll model....

    Started by fanusi‎, 03-28-2013 05:01 AM
    • Replies: 0
    • Views: 3,478
    03-28-2013, 05:01 AM Go to last post
  34. Two-level regression and weights

    Hi, I'm trying analyze a two-level binary logistic (level-1=individuals and level-2=states) regression model with the PEW Religious Landscape...

    Started by fanxiong‎, 02-21-2013 03:52 PM
    • Replies: 0
    • Views: 1,854
    02-21-2013, 03:52 PM Go to last post
  35. Logistic regression interpretation

    Can anyone please interpret these results for me i will be highly obliged. Thank you B S.E. Wald Sig. Do you know the doses of every pesticide...

    Started by Farhan‎, 03-26-2016 07:41 AM
    • Replies: 3
    • Views: 1,293
    03-28-2016, 02:35 PM Go to last post
  36. Linear Regression with effect size changes of categorical variables with continuous

    I have three categorical variables (disked, herbicide, Lands) each is binomial (0,1). For example, within disked there is a group in which it does...

    Started by farre1pd‎, 07-27-2015 12:45 PM
    ancova, categorical, continuous, group differences
    • Replies: 3
    • Views: 1,506
    07-27-2015, 02:21 PM Go to last post
  37. Treatment effect on samples with pre-existing difference

    I have two samples. One has received the treatment, the other has not. N for the treatment sample is 400. N for the non-treatment sample is 1200. ...

    Started by fatso101‎, 12-18-2013 04:17 PM
    • Replies: 2
    • Views: 1,327
    12-18-2013, 07:20 PM Go to last post
  38. Please help me, Rationale of algorithm for estimating conditional variance

    Hi could could someone please help me understand this regression logic to find a conditional variance in a polynomial least squares regression ? X...

    Started by Faysou‎, 10-07-2011 05:26 PM
    least-squares, variance estimation
    • Replies: 0
    • Views: 1,914
    10-07-2011, 05:26 PM Go to last post
  39. ANOVA and Multiple Regression DIFFERENT Result

    Using a data set I come up with this problem. The effects of A, B, and their interaction (A ◊ B) on Y are tested. The data are analyzed using both...

    Started by fayyazcivil‎, 01-21-2014 12:16 PM
    • Replies: 5
    • Views: 1,914
    01-21-2014, 01:19 PM Go to last post
  40. Normalized/Standardized values? Confirmatory Factor Analysis

    Hey, I would like to do a regression analysis in SPSS and collected data for all my variables. However, I have four "latent" independent...

    Started by fazzmo‎, 11-30-2012 01:17 PM
    • Replies: 0
    • Views: 1,484
    11-30-2012, 01:17 PM Go to last post
  41. Structural Equation Modeling with panel-data - Where to look for the overall effect?

    Hey, I build a simple longitudinal model as can be seen in the following picture between my independent variable "Ease" and my dependent variable...

    Started by fazzmo‎, 12-10-2012 04:15 AM
    • Replies: 0
    • Views: 1,464
    12-10-2012, 04:15 AM Go to last post
  42. Using the same control variable twice... problem? Drawing covariances?

    Hey, I'm trying to test a simple model consisting of three layers IV (Institutional environment) --> MV (Entrepreneurial Activity) --> DV...

    Started by fazzmo‎, 12-20-2012 05:54 AM
    • Replies: 0
    • Views: 1,101
    12-20-2012, 05:54 AM Go to last post
  43. How to incorporate control variables in SEM?

    Hey guys, I have a very simple model in which 4 institutional dimensions (Reg, Cog, Norm, Cond) are supposed to predict "Rate" and this in turn is...

    Started by fazzmo‎, 12-23-2012 04:53 AM
    • Replies: 0
    • Views: 2,834
    12-23-2012, 04:53 AM Go to last post
  44. Help! can't get normal residual, what should I do?

    Dear All, I am working on a project, and trying to explain what factors will affect the price of a product, here LOG10(PRICE) is the DV, and a few...

    Started by fcong‎, 10-05-2012 03:54 AM
    • Replies: 6
    • Views: 2,607
    10-09-2012, 12:56 AM Go to last post
  45. Binomial Logistic Regression - Predicted Probabilities

    Hi. I’m taking my first steps on binomial logistic regression and I was hoping you could help me with some doubts I’m having. My model has a...

    Started by FDFS‎, 05-27-2013 11:15 AM
    logistic
    • Replies: 9
    • Views: 2,133
    06-05-2013, 08:38 AM Go to last post
  46. Plot interaction effects

    Hi! I already know how to plot the predicted probabilities of binomial models without any interaction terms: predicted logit = a + bX ...

    Started by FDFS‎, 09-12-2013 10:06 AM
    binomial logistic regress, interactions, predicted probabilities
    • Replies: 6
    • Views: 7,564
    09-12-2013, 10:23 AM Go to last post
  47. Accuracy of prediction?

    Right, I've got some data for variable X and variable Y in 2002. Using Simple Linear Regression, I've made a model which uses variable X to...

    Started by fdsa ytre‎, 03-20-2013 04:58 PM
    • Replies: 1
    • Views: 1,552
    03-20-2013, 05:51 PM Go to last post
  48. Grouping educational level in different variables

    hi there! I'm trying to apply a regression model based on the Human Capital Theory. Besides other independent variables, I have grouped the...

    Started by FŽanor‎, 02-25-2014 01:51 PM
    education, educational level, human capital theory, regression, variables
    • Replies: 6
    • Views: 1,707
    02-25-2014, 04:06 PM Go to last post
  49. prediction using training data != training data

    (Full disclosure: This is a cross-post from the Kernel Machines Forum) I'm using LIBSVM for regression analysis and, despite double checking my...

    Started by fearless_fool‎, 10-07-2011 02:12 PM
    libsvm, prediction errors, regression
    • Replies: 2
    • Views: 2,641
    10-09-2011, 11:29 PM Go to last post
  50. Question Logistic regression - behavior of uncorrelated predictors

    Hi all, I am a bit puzzled about the behavior of uncorrelated predictors in logistic regression. As in OLS, I thought that if two predictors (X1...

    Started by felize2000‎, 07-03-2012 02:22 PM
    logistic regression, regression coefficients, uncorrelated
    • Replies: 1
    • Views: 1,419
    07-03-2012, 02:35 PM Go to last post
  51. normality assumption: data itself, or residuals ?

    I have a question about the normality assumption, in regression, ANOVA, and T-test: The normalization assumption is for the original data and...

    Started by fengyuwuzu‎, 05-03-2016 10:36 PM
    • Replies: 3
    • Views: 2,186
    05-04-2016, 11:21 PM Go to last post
  52. Understanding output of logistic regression

    Hi I would appreciate if someone could help me with understanding the output of my logistic regression analysis. I myself have not much knowledge of...

    Started by Fenomeno‎, 07-03-2014 05:39 PM
    • Replies: 0
    • Views: 1,314
    07-03-2014, 05:39 PM Go to last post
  53. Red face how to control foe age-wave1 when running a mixed model analysis

    Hi guys, I am running a linear mixed model in SPSS. My research question is: Does a reward-related personality trait at baseline predict weight...

    Started by fernandamata‎, 05-01-2015 06:57 PM
    mixed-model
    • Replies: 0
    • Views: 1,127
    05-01-2015, 06:57 PM Go to last post
  54. Cubic polynomial regression - Correlation coefficient

    How to compute the Correlation Coefficient of third degree polynomial regression? Using R and Statgraphics I only get R2, wich I believe that is...

    Started by Fernando Andreacci‎, 11-01-2011 05:56 PM
    • Replies: 0
    • Views: 3,914
    11-01-2011, 05:56 PM Go to last post
  55. Is this possible?

    I have found some scientific papers in which a spline regression is performed with a categorical dependent (death) and a continuous predictor. In the...

    Started by Ferro‎, 08-13-2010 05:12 AM
    • Replies: 2
    • Views: 2,926
    08-14-2010, 11:28 AM Go to last post
  56. Interpreting the regression RMSE when responses are measurements with known SD

    Hi all, I'm fitting a simple regression model (Y = a + bX) where my responses are measurements whose standard deviations, SD, are available....

    Started by fgg‎, 07-19-2014 09:04 PM
    • Replies: 8
    • Views: 4,248
    07-29-2014, 07:11 PM Go to last post
  57. [R] Difference between regression lines significant?

    Hi, I'm a PhD student researching processes of technology maturation. For this purpose I collected patent data which I want to use to...

    Started by Fiete‎, 06-10-2013 09:24 AM
    • Replies: 1
    • Views: 1,815
    06-11-2013, 11:35 PM Go to last post
  58. Grouping Categorical Variables in Regression differently in Main vs Interactions

    All, I have a very peculiar problem that I am trying to solve. What I mean is, the following is an explanation of the current solution that has...

    Started by FigNewtons1978‎, 06-13-2013 12:39 AM
    categorical variables, multiple regression
    • Replies: 0
    • Views: 1,244
    06-13-2013, 12:39 AM Go to last post
  59. Logistic regression

    Good afternoon, I write to you for 3 questions. Thanks for your help. When in a regression analysis the correct model is unknown before the...

    Started by figone‎, 01-29-2014 04:59 PM
    • Replies: 6
    • Views: 3,116
    03-22-2014, 02:04 PM Go to last post
  60. Question Comparing ln(y) =bX vs. OLS and other count data models

    My data is a balanced panel. 12 years X 600 ids/year X 12 months = 864,000 observations. For about 150 of my 600 ids, at a certain point in this...

    Started by figuringout‎, 02-08-2013 08:17 PM
    count data, log, ols, regression, stata
    • Replies: 0
    • Views: 3,130
    02-08-2013, 08:17 PM Go to last post

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