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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Seasonality and dummy variables

    Hey, I've got this econometric problem I could use some help with. I'm looking for day of the week effects in a certain index. I'm using a regression...

    Started by Sands‎, 11-22-2011 03:35 AM
    • Replies: 11
    • Views: 8,539
    11-23-2011, 05:30 AM Go to last post
  2. Beginner question

    When I do a regression using monthly returns to get a beta using the CAPM, are the alpha and beta values also monthly? Thanks!

    Started by allan89a‎, 11-22-2011 03:01 PM
    • Replies: 1
    • Views: 1,871
    11-23-2011, 04:06 AM Go to last post
  3. application of regression model - which one to choose? please help

    Hi all, for my master thesis I would like to investigate the human impact on behavior of sea lions. I have 3 different defined response variables...

    Started by KathiF‎, 11-17-2011 11:34 AM
    • Replies: 10
    • Views: 3,163
    11-22-2011, 02:03 PM Go to last post
  4. binary logistic regression output

    Hi there, running up against a brick wall with this. Please help! Using binary logistic regression in SPSS. For my dependent variable I have 200...

    Started by scotandrew‎, 11-21-2011 06:28 PM
    • Replies: 2
    • Views: 2,002
    11-22-2011, 11:20 AM Go to last post
  5. Testing the significance of the variance component of an itneraction effect...

    hello peeps. so this is a question that i think anyone who works with R fitting mixed-effects linear models will find useful... i dont work around...

    Started by spunky‎, 11-20-2011 03:52 PM
    • Replies: 0
    • Views: 2,355
    11-20-2011, 03:52 PM Go to last post
  6. Moderated Multiple Regression versus Factorial ANOVA.

    I am analyzing an interaction effect between two continuous independent variables (Z and X) on a continuous dependent variable (Y). I have...

    Started by Holmes‎, 11-19-2011 04:30 AM
    factorial anova, interaction term, moderated regression
    • Replies: 4
    • Views: 4,624
    11-20-2011, 07:23 AM Go to last post
  7. Categorical variables and interaction in MLR

    Would it be correct, to add in multiple linear regrression interaction between two categorical variables (i transformed them - dummy variavles) with...

    Started by Myron Tsisinskiy‎, 11-18-2011 04:40 AM
    categorical vairable, interaction term, multiple regression
    • Replies: 9
    • Views: 3,366
    11-19-2011, 04:14 PM Go to last post
  8. Cross sectional Regression Analysis

    Hi, I am a currently doing my coursework on the factors impacting on the dividend policy in the financial sector in Mauritius. The problem is that...

    Started by Galvin‎, 11-19-2011 01:17 PM
    • Replies: 1
    • Views: 2,453
    11-19-2011, 01:23 PM Go to last post
  9. Regression prediction question

    My question is how do we get the 16, the one I have circled.

    Started by newbiestats‎, 11-18-2011 04:52 PM
    • Replies: 2
    • Views: 2,559
    11-18-2011, 05:18 PM Go to last post
  10. multigroup regression and interaction effects

    Goal: Cross cultural research to validate the EAS measurement tool (see below). Two tools: EAS with 7 descriptive dimensions, each dimension...

    Started by pound puppy‎, 11-15-2011 11:44 PM
    • Replies: 1
    • Views: 1,943
    11-17-2011, 10:51 PM Go to last post
  11. How to credibly downweight imputed values?

    Hi All, First post here. I've googled all around trying to find an answer to my question, but I can't seem to find one, and pencil and paper isn't...

    Started by andrewcd‎, 11-17-2011 10:18 PM
    imputed values, weighted least squares
    • Replies: 1
    • Views: 2,571
    11-17-2011, 10:38 PM Go to last post
  12. Question about coefficient change

    Hi guys, I'm completely stuck with my statistical analysis so I was hoping you guys could help me out. This is the case: I did a research...

    Started by Stomkommer‎, 11-12-2011 10:17 AM
    • Replies: 2
    • Views: 2,288
    11-17-2011, 10:33 PM Go to last post
  13. how to calculate the significance of an R2 increase (based only on results in paper)

    Recently I have come across several articles that report OLS results of models with increasing numbers of variables. In the articles the R2 and...

    Started by PeterV‎, 11-16-2011 04:35 AM
    2 Pages
    1 2
    fit summary, model comparison, model selection, regression, significance of reg
    • Replies: 19
    • Views: 21,769
    11-17-2011, 09:27 AM Go to last post
  14. Logistic Regression: model selection and interpretation

    Good Day!! Hi I am working for the first time with logistic regressions and I have some doubts about the model selection and the result that is...

    Started by caelrato‎, 11-16-2011 01:03 PM
    • Replies: 3
    • Views: 5,442
    11-16-2011, 03:17 PM Go to last post
  15. Regression equation

    my question is where did 105.9 and 13.1 come from??? and Where did the R 0.814 come from??

    Started by newbiestats‎, 11-14-2011 10:02 PM
    • Replies: 1
    • Views: 2,423
    11-14-2011, 10:43 PM Go to last post
  16. Regression suitability question

    Hello, Could anyone help me out with some pointers please? I'm looking to use some statistics to help predict student % school absence rates...

    Started by orangecrush‎, 11-13-2011 04:42 AM
    • Replies: 4
    • Views: 3,912
    11-13-2011, 06:00 PM Go to last post
  17. Model building question-Is the researcher right?

    I'm thinking about a researcher who made the following statement about a model(upon criticism of his interpretation of the data). "There is a...

    Started by leavesof3‎, 11-09-2011 06:30 PM
    baseball, regression, research
    • Replies: 7
    • Views: 2,704
    11-13-2011, 05:22 PM Go to last post
  18. Help to control on the size effect between two groups (small vz. big)

    Hello All, I would like to have your help to solve the size effect. Specifically, I have two group of companies listed on different markets....

    Started by Stata_user‎, 11-11-2011 11:30 AM
    • Replies: 6
    • Views: 2,883
    11-12-2011, 12:44 PM Go to last post
  19. Simple Linear Regression- need help!

    Ok I am trying to look at the relationship of sales

    Started by student865‎, 11-10-2011 07:41 PM
    • Replies: 1
    • Views: 1,634
    11-10-2011, 07:47 PM Go to last post
  20. Data Question

    Ok I am trying to look at the relationship of sales

    Started by student865‎, 11-10-2011 01:51 PM
    • Replies: 5
    • Views: 1,958
    11-10-2011, 04:02 PM Go to last post
  21. Multiple Regression Question

    This is my data: Bars

    Started by student865‎, 11-10-2011 09:54 AM
    • Replies: 8
    • Views: 3,244
    11-10-2011, 02:17 PM Go to last post
  22. Sxx from ANOVA output?

    Hi everyone, I have an upcoming test in Stats class. The professor has posted review questions but isn't responding to my questions. Below is a...

    Started by Sheesh19‎, 11-10-2011 10:55 AM
    • Replies: 2
    • Views: 9,086
    11-10-2011, 12:52 PM Go to last post
  23. same variable: Single regression not stats sig but multiple regression stats sig?

    Evening, IMy statistical query is that I am conducting a multiple regression ( step down - ommitting the non significant variables one by one). I...

    Started by cousmathematics‎, 11-08-2011 12:00 PM
    • Replies: 2
    • Views: 3,958
    11-09-2011, 04:44 AM Go to last post
  24. coefficient discrepancies

    I am running a regression with 1 cont. ind. var and 1 cat. ind. var. There are 3 levels to the cat var so I have the lowest level set as the dummy...

    Started by shanehall.m‎, 11-08-2011 10:38 AM
    interact
    • Replies: 2
    • Views: 1,791
    11-08-2011, 04:00 PM Go to last post
  25. Combining variables in SPSS

    I want to combine two variables that have the same level of measurement (5-point scale) in a third one to use it in my regression model, how can I do...

    Started by Elham‎, 11-08-2011 09:02 AM
    • Replies: 0
    • Views: 3,021
    11-08-2011, 09:02 AM Go to last post
  26. Regression verses ANOVA models

    Suppose you run both an ANOVA and a linear regression model on the same data using the same dependent variable and set of independent variables. The...

    Started by DeAnne Hunt‎, 11-07-2011 07:34 PM
    • Replies: 1
    • Views: 2,567
    11-07-2011, 08:03 PM Go to last post
  27. Univariate vs Multivariate Analysis, Quick Question

    Hey guys, I have a very quick question! I'm presenting a medical research paper and it uses univariate and multivariate analysis. Sometimes a...

    Started by THX‎, 11-05-2011 01:08 PM
    • Replies: 4
    • Views: 9,562
    11-07-2011, 04:32 PM Go to last post
  28. Interaction results

    We have two diagnostic fields (a primary one for most important analysis and secondary one for less important one). Both fields have the same exact...

    Started by noetsi‎, 11-07-2011 03:48 PM
    • Replies: 0
    • Views: 1,941
    11-07-2011, 03:48 PM Go to last post
  29. How do I test linearity of binomial data??

    - deleted double post -

    Started by KathiF‎, 11-07-2011 12:53 PM
    • Replies: 0
    • Views: 1,875
    11-07-2011, 12:53 PM Go to last post
  30. Uncertainty on covariate

    Hi guys, I'm working on the links between road traffic noise and mental health using multilevel modelling (level 1 = individuals - level 2 =...

    Started by pandin‎, 11-07-2011 09:09 AM
    logistic uncertainty
    • Replies: 0
    • Views: 1,497
    11-07-2011, 09:09 AM Go to last post
  31. Interpretation of multiple linear regression model

    I have a regression that includes three continuous and nine categorical independent variables. One of the categorical variables has 6 values while...

    Started by vykngs1‎, 11-05-2011 10:15 PM
    • Replies: 2
    • Views: 2,378
    11-07-2011, 07:19 AM Go to last post
  32. Orthogonal projection in regression analysis.

    Can someone explain what exactly you are trying to find when using orthogonal projection in regression analysis. I don't quite understand it. You are...

    Started by c2q‎, 11-04-2011 10:29 PM
    • Replies: 0
    • Views: 1,792
    11-04-2011, 10:29 PM Go to last post
  33. Logistic Regression

    For a transportation project analyzing the main effects, blocking effects of -Driving condition(3), message type(2) -AgeRange(3), gender(2) ...

    Started by jmess03‎, 11-04-2011 01:39 PM
    • Replies: 2
    • Views: 2,073
    11-04-2011, 04:14 PM Go to last post
  34. Linear regression

    Little help please: A golf club manufacturer is trying to determine how the price of a set of clubs affects the demand for clubs. Below contains...

    Started by xwantedx‎, 11-04-2011 06:50 AM
    nonlinear, regression
    • Replies: 1
    • Views: 1,929
    11-04-2011, 07:15 AM Go to last post
  35. Regression Interpratation

    ..........

    Started by UCFstudent‎, 11-03-2011 09:36 AM
    • Replies: 1
    • Views: 2,104
    11-03-2011, 03:00 PM Go to last post
  36. ANCOVA and geography help

    For a GIS class project, I'm doing some research based on Christopher Rumh's 2000 paper Are Recessions Good for your Health? In it, he analyzes...

    Started by bryangoodrich‎, 11-02-2011 03:44 PM
    • Replies: 1
    • Views: 2,389
    11-03-2011, 03:09 AM Go to last post
  37. Theoretical question from Mixed Effects Random Coefficents Multilevel Linear Models

    hello people! this is kind of a theoretical question from people who've seen mixed-effects/random-coefficients/multi-level models before or have a...

    Started by spunky‎, 11-01-2011 02:15 PM
    • Replies: 6
    • Views: 2,836
    11-03-2011, 12:46 AM Go to last post
  38. Logistic regression

    What does it mean when I have insignificant Wald test for all my predictor variables in the (Variables in the Equation) table, although the goodness...

    Started by Elham‎, 10-30-2011 02:49 PM
    • Replies: 13
    • Views: 3,447
    11-02-2011, 01:36 PM Go to last post
  39. Arrow Is it possible to compare significance levels using a test?

    Hi guys! I have got a question and was hoping some smart guy here could help me out; I ran two regressions: Yt = c + Xt + Xt-1 + Ct + Yt-1 Zt =...

    Started by Tomassi‎, 11-01-2011 07:06 PM
    • Replies: 0
    • Views: 1,848
    11-01-2011, 07:06 PM Go to last post
  40. 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: 3,954
    11-01-2011, 05:56 PM Go to last post
  41. GLM Interpretation - confused.com

    Hi Folks, This may seem pretty straight forward to many of you but I'm could really do with some help. I'm using the generalized linear model to...

    Started by railway‎, 10-21-2011 10:00 AM
    • Replies: 3
    • Views: 3,106
    11-01-2011, 09:46 AM Go to last post
  42. Interpretation of coefficient

    Hello, I am trying to interpret the results of a coefficient in a log-linear specification. I am trying to investigate the relationship between...

    Started by Slfwui‎, 11-01-2011 03:56 AM
    • Replies: 0
    • Views: 1,892
    11-01-2011, 03:56 AM Go to last post
  43. Negative value of the constant term..?

    Hi, My name is Roy Klaassen, currently writing my master thesis in the field of marketing management (Tilburg University, the Netherlands). My...

    Started by roybooy‎, 10-31-2011 07:28 AM
    • Replies: 2
    • Views: 4,626
    10-31-2011, 08:10 AM Go to last post
  44. Joint hypothesis testing

    Hi, I am working on a 'quick' study on whether ex-ante probabilities predict the actual realized outcomes of sporting events. My model is ...

    Started by rotanho‎, 10-27-2011 04:35 PM
    • Replies: 4
    • Views: 5,113
    10-31-2011, 06:30 AM Go to last post
  45. Ridge Regression Estimators' properties...

    Hi there I'm studying about Ridge Regression Estimator(RRE) and have a question. There are 3 properties of RRE. First, RRE can be derived by...

    Started by subspaces‎, 10-30-2011 11:36 AM
    • Replies: 0
    • Views: 3,315
    10-30-2011, 11:36 AM Go to last post
  46. Dynamic Regression

    Can we determine dominant factors using dynamic regression model?

    Started by Carlyn‎, 10-29-2011 10:36 PM
    • Replies: 0
    • Views: 1,566
    10-29-2011, 10:36 PM Go to last post
  47. Autocorrelation/Regression

    Post deleted

    Started by Carlyn‎, 10-29-2011 09:06 AM
    • Replies: 4
    • Views: 3,028
    10-29-2011, 09:58 AM Go to last post
  48. Sequence of Doing

    Is it a good practice to estimate the least square estimators of alpha and beta first, then followed by a study of 2D-plot graph? Or better to do...

    Started by hsian90‎, 10-14-2011 05:24 AM
    • Replies: 1
    • Views: 1,493
    10-29-2011, 07:42 AM Go to last post
  49. Can I derive a standard error from a regression table, and do I need to???

    I am not sure if this can be done, so I would appreciate any insight. I only have a regression table that has IVs with unstandardized and...

    Started by UCFstudent‎, 10-29-2011 05:39 AM
    • Replies: 2
    • Views: 1,575
    10-29-2011, 07:38 AM Go to last post
  50. Overall effect size measure for categorical variable

    Dear forum, I am running logistic regressions with categorical predictors (nominal, several categories, dummy coded). I use a LRT to test...

    Started by Thomas‎, 10-29-2011 07:34 AM
    • Replies: 0
    • Views: 2,927
    10-29-2011, 07:34 AM Go to last post
  51. HELP with the concept of "percentile" (for regressions)

    Hello everybody. This is my first post and I hope someone can help me with a problem I have. I am a complete begineer in statistics, I studied them...

    Started by KansaiRobot‎, 10-25-2011 10:00 PM
    • Replies: 2
    • Views: 2,991
    10-28-2011, 01:20 AM Go to last post
  52. tandard errors of the parameter estimates in a quadratic fit

    How do I estimate the standard errors of the parameter estimates in a quadratic fit? This page list the estimate for a linear fit:...

    Started by Ivan David Haigh‎, 10-27-2011 07:52 AM
    regression analysis
    • Replies: 2
    • Views: 4,007
    10-27-2011, 08:06 AM Go to last post
  53. Excel mutliple regression

    I have a made a double regression output in excel 2007 but I don't know how to explain those outputs. Can anyone tell me what does the Regression...

    Started by newbiestats‎, 10-27-2011 07:28 AM
    • Replies: 0
    • Views: 1,577
    10-27-2011, 07:28 AM Go to last post
  54. Help on a project!!!

    I am doing a school project and trying to find a relationship between government deficit/GDP (dependent variable) and inflation, interest rate,...

    Started by Hao Wang‎, 10-20-2011 12:28 PM
    model, regression, research
    • Replies: 3
    • Views: 1,952
    10-26-2011, 05:51 PM Go to last post
  55. Logit regression what does the output actually mean?

    HI I have conducted a logistic model regression in MATLAB for a set of explanatory variables against a dependant variable. The explanatory variables...

    Started by jan*‎, 10-26-2011 02:06 PM
    • Replies: 1
    • Views: 2,315
    10-26-2011, 02:41 PM Go to last post
  56. t-test for categorical predictors in regression WRONG!?

    hey people... so i am sitting in my theory of GLMs class... and the prof just said something i had never ever heard in my life... which is that, in...

    Started by spunky‎, 10-26-2011 12:16 PM
    • Replies: 9
    • Views: 4,307
    10-26-2011, 01:08 PM Go to last post
  57. 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: 5,093
    10-25-2011, 10:09 AM Go to last post
  58. What regression methods to study?

    I am currently putting in a proposal for an independent study course in the summer in regression. Part of it is which regression methods and...

    Started by noetsi‎, 10-24-2011 11:31 AM
    • Replies: 9
    • Views: 2,545
    10-24-2011, 03:49 PM Go to last post
  59. Need Help - Valuing Coefficients

    Hi guys (and gals), new to the forums. I work for a grocery store, and we're trying to determine the sales lift associated with a free sample...

    Started by Jonathan‎, 10-24-2011 01:56 PM
    • Replies: 2
    • Views: 1,957
    10-24-2011, 03:24 PM Go to last post
  60. Orthogonal projection onto linear span.

    Hi there. I was hoping someone could give me a starting point on this problem because I'm clueless. given y = x1 =

    Started by c2q‎, 10-23-2011 08:45 PM
    • Replies: 3
    • Views: 3,632
    10-24-2011, 12:55 PM Go to last post

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