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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Mixed effects modelling

    Hey all, Im building a linear mixed effects model of a variable, lets say the headway time maintained by drivers in car following situations. I...

    Started by Andre Fernandez‎, 07-24-2011 07:12 AM
    linear regression, matlab, mixed effects models
    • Replies: 0
    • Views: 1,470
    07-24-2011, 07:12 AM Go to last post
  2. Scatter plot

    I created a scatter plot.. I am just wondering if I can say this is a monotonic? Thank you! :)

    Started by andre123‎, 07-16-2013 10:54 AM
    • Replies: 2
    • Views: 2,651
    07-23-2013, 07:47 AM Go to last post
  3. [Linear Regression] Regression with aggregated or separated years?

    Hello to everyone! :wave: I should do some regressions but i've an important and simple question... my dataset have this structure: ...

    Started by andre94‎, 08-25-2017 09:32 AM
    aggregation, linear regression, regression analysis
    • Replies: 4
    • Views: 307
    08-25-2017, 12:00 PM Go to last post
  4. Percentages regression

    I need to do a regression analysis as part of my dissertation and am quite lost. What I want to do is to see if there is a correlation between a...

    Started by andrea.khgh‎, 12-11-2013 03:45 AM
    • Replies: 2
    • Views: 2,190
    12-11-2013, 04:06 AM Go to last post
  5. Changing significance level when interactions are added

    Hi, I'm wondering why my significance levels go from significant, to insignificant, and back to significant again when adding interactions? ...

    Started by andreek‎, 04-26-2014 08:17 AM
    • Replies: 1
    • Views: 2,195
    04-26-2014, 11:37 AM Go to last post
  6. 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: 1,741
    05-15-2014, 09:08 AM Go to last post
  7. Prediction Limits

    Morning everyone. First thread, so take it easy on me. I am using a holt-winters times series to predict future call and transactional volume. ...

    Started by andrew01‎, 09-03-2008 06:48 AM
    • Replies: 0
    • Views: 3,325
    09-03-2008, 06:48 AM Go to last post
  8. Interpreting Multiple Regression vs Correlation

    Hi, I'm analysing the results to a satisfaction survey. I want to work out the key drivers of satisfaction so I'm using a question relating to...

    Started by andrew2786‎, 05-23-2012 10:12 AM
    correlation, interpreting results, multiple regression, satisfaction
    • Replies: 4
    • Views: 5,136
    05-28-2012, 05:58 AM Go to last post
  9. 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: 2,549
    11-17-2011, 10:38 PM Go to last post
  10. Partialling out covariates

    Hi, I have a situation where I have Y_it = a_i + dT_it + X'_itB + e_it T is multi-valued and exogenous. It is correlated with some of the...

    Started by andrewcd‎, 12-20-2011 10:53 AM
    • Replies: 1
    • Views: 3,270
    12-20-2011, 05:18 PM Go to last post
  11. Is this an instance of simultaneity? Can you help me understand why?

    I cant seem to figure this out, as standard descriptions of simultaneity in econometrics textbooks don't quite seem to fit. 1. I have panel data...

    Started by andrewcd‎, 02-24-2012 10:45 PM
    • Replies: 0
    • Views: 1,641
    02-24-2012, 10:45 PM Go to last post
  12. Logistic Regression and Multiple Regression

    Hi, Please could you help me (or direct me to someone who can help me) with the following: I have a spreadsheet with a number of...

    Started by Andrewdevilliers‎, 09-06-2011 09:36 AM
    categories, logistic regression, logit, multiple regression, multiple variables
    • Replies: 13
    • Views: 3,870
    09-07-2011, 10:17 AM Go to last post
  13. Likert Scale Regression Analysis

    I want to perform a regression on some likert scale data. Basically its a scale which measures propensity for participative management. The rationale...

    Started by andrewol‎, 08-12-2013 03:01 PM
    • Replies: 7
    • Views: 14,181
    08-13-2013, 04:09 PM Go to last post
  14. parametric and non parametric data

    Hi I am new to stats, so maybe a silly question. Does regression analysis have assumptions of normality? Can I use regression for both normally...

    Started by andrilnc‎, 07-04-2012 05:31 PM
    • Replies: 2
    • Views: 1,867
    07-05-2012, 12:28 AM Go to last post
  15. LOGIT im Panel - Pooled, population-averaged, fixed, random?

    Hey community, I run a logistic regression in panel with Stata. I'm not sure if I should use a fixed-effect, random-effect, population-averaged or...

    Started by Andy‎, 08-27-2012 11:30 AM
    • Replies: 2
    • Views: 3,848
    08-28-2012, 09:38 AM Go to last post
  16. Unhappy Autocorrelation in nonlinear models

    Good morning! I'm running a random effects logit (xtlogit with stata) and cannot find how to test for autocorrelation. Has anyone an idea? Things...

    Started by Andy‎, 09-11-2012 02:12 AM
    • Replies: 0
    • Views: 1,504
    09-11-2012, 02:12 AM Go to last post
  17. Regression tree significances

    Hello I have some rainwater roof runoff data for 69 rain events, plus 4 possible explanatory variables. Individual regressions (linear, power,...

    Started by andyspeak‎, 12-29-2012 11:22 AM
    • Replies: 0
    • Views: 1,875
    12-29-2012, 11:22 AM Go to last post
  18. meta analysis of many regression studies

    Ive searched the forum for answers to this but no joy yet so please help if you can. I have about 30 published studies looking at the dependence...

    Started by andyspeak‎, 02-17-2015 06:17 AM
    • Replies: 9
    • Views: 2,808
    02-25-2015, 05:31 AM Go to last post
  19. Comparing 2 multiple regression model???

    Hi im new here and to tell the truth i'm still learning about stat and struggling a little bit in my thesis so my question is what should i use is...

    Started by Andy_G‎, 01-10-2013 01:33 PM
    compare regression linear
    • Replies: 5
    • Views: 1,802
    01-11-2013, 09:34 AM Go to last post
  20. problem with linear multiple regression in R

    Hi, I have a problem to build and to explain the linear multiple regression. I have a data set called Cars93 with 26 variables and 93...

    Started by angersan‎, 08-18-2014 03:32 PM
    • Replies: 0
    • Views: 1,058
    08-18-2014, 03:32 PM Go to last post
  21. Does the intercept p value matter?

    Hi, I have outputs of a simple linear model as follows: y = 0.0339 + 0.27918X The p value of the intercept is 0.206 and of the slope is...

    Started by anglais428‎, 03-08-2011 06:48 AM
    intercept p value
    • Replies: 4
    • Views: 50,611
    03-28-2011, 08:14 PM Go to last post
  22. Non parametric equivalent to multiple regression?

    Hi everyone! My sample size is only 15. Is there a nonparametric equivalent to multiple regression? I have five predictors which correlate (using...

    Started by angoslezq‎, 04-17-2010 06:24 AM
    • Replies: 2
    • Views: 9,670
    04-17-2010, 08:26 PM Go to last post
  23. Any data transformation needed for Pearson and Multiple regression?

    I want to run a Pearson's r and also multiple regresssion between a DV and some IVs. The DV is measured in percentages as well as some of my IVs. The...

    Started by angoslezq‎, 04-19-2010 01:14 PM
    • Replies: 0
    • Views: 2,861
    04-19-2010, 01:14 PM Go to last post
  24. Unhappy How to apply GEE and how to use it for critical mass

    Hi, sorry I am completely new to the forum and as well to using GEE and SPSS so I hope my question is not to confusing. My dependent variable is...

    Started by Angyal-jule‎, 04-09-2014 10:49 AM
    critical mass, gee, independent variable, spss
    • Replies: 0
    • Views: 1,280
    04-09-2014, 10:49 AM Go to last post
  25. Post Find the regression line?

    Using test runs with the same automobile on a test track the following data on speed (km/hr) and mileage (km/l) were obtained. Speed (x): 48 48 64...

    Started by ani223‎, 04-10-2013 07:31 AM
    • Replies: 2
    • Views: 2,510
    04-14-2013, 10:19 PM Go to last post
  26. interpreting interaction results in ols regression

    Dear all, I am trying to examine the association between household wealth and expenditure on education of children aged 11-17 and 5-10 in a...

    Started by anika13‎, 12-29-2015 12:45 PM
    • Replies: 1
    • Views: 1,684
    12-29-2015, 04:28 PM Go to last post
  27. Multiple Regression with Discrete and Continuous data in Excel

    Hi, I've got lots of rows of data in Excel (around 3,500), and multiple variables. 1 of my variables is continuous (company revenues) 1 of my...

    Started by anikamashru‎, 09-09-2013 09:19 AM
    discrete, excel, multiple, regression, variables
    • Replies: 0
    • Views: 2,569
    09-09-2013, 09:19 AM Go to last post
  28. 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: 1,737
    05-15-2014, 02:38 AM Go to last post
  29. Simultaneous Equations Model - Endogenous/Exogenous Variables

    I'm having doubts about the first question, I think Qt should be exogenous as although other endogenous variables depend on it, Qt doesn't depend on...

    Started by ankc‎, 12-13-2012 12:34 AM
    • Replies: 0
    • Views: 1,891
    12-13-2012, 12:34 AM Go to last post
  30. Questions on Testing for Residuals

    Hi, I'm new on here and I'm sorry if I posted in the wrong section. So I just went over testing of residuals for regression analysis and have a...

    Started by ankc‎, 12-11-2012 11:32 AM
    • Replies: 2
    • Views: 1,374
    12-12-2012, 11:19 AM Go to last post
  31. Time Series Question:Garch to forecast price/return?

    Is it possible to use Garch to model price or return?or does Garch only model the volatility of price/return? Thanks

    Started by ankc‎, 09-29-2013 02:20 PM
    • Replies: 0
    • Views: 1,584
    09-29-2013, 02:20 PM Go to last post
  32. Model selection in logistic regression

    Hello, I would like to formulate an explanatory model with logistic regression, and I want to select variables that are causal to the dichotomous...

    Started by anker‎, 01-11-2013 08:40 AM
    • Replies: 1
    • Views: 1,252
    01-11-2013, 11:04 AM Go to last post
  33. Correlation with residuals of regression

    Hi all, Let's say I have one DV (X) and 5 IV's, A, B, C, D and E. I'm specifically interested in the effect of E. I could perform a regression...

    Started by AnLo‎, 11-04-2016 08:07 AM
    • Replies: 3
    • Views: 2,267
    11-07-2016, 10:18 AM Go to last post
  34. Wink Multipel linear regression or Anova?

    I am in the middle of a written exam where I have to examine a causal claim controlling for gender, age and occupation. The dependent variable is...

    Started by Ann91‎, 06-16-2012 04:17 AM
    • Replies: 1
    • Views: 1,213
    06-20-2012, 02:46 PM Go to last post
  35. Linear regression?????

    Can I still treat my regression as being linear if one of the independent variables is a dummy with 3 categories or does it become an...

    Started by Ann91‎, 06-17-2012 07:27 AM
    • Replies: 0
    • Views: 1,296
    06-17-2012, 07:27 AM Go to last post
  36. Logistic or logit

    Hello! I have a question about which model to use: logit or logistic regression. The independent variables are continuous (age, # of children),...

    Started by Anna91‎, 06-12-2014 05:09 PM
    • Replies: 0
    • Views: 1,095
    06-12-2014, 05:09 PM Go to last post
  37. multicollinearity of interaction term in binary logistic regression

    Hello, I would like to conduct a Binary Logistic Regression Analysis with a regression model containing a nominal 0/1-dummy variable (D) a...

    Started by anna_84‎, 01-05-2015 11:20 AM
    • Replies: 2
    • Views: 2,905
    01-05-2015, 01:20 PM Go to last post
  38. Comparing beta's of different regression analyses for significance

    Hi all, I have been struggling with this for a while now, so I really hope one of you can help me out: I am trying to compare two different...

    Started by anneb‎, 01-30-2017 02:14 PM
    • Replies: 2
    • Views: 2,000
    01-30-2017, 03:42 PM Go to last post
  39. Ordinal regression vs Linear regression

    Here's the situation: I have a categorical dependent variable (3 categories), and 3 continuous explanatory variables. Say I perform an ordinal...

    Started by annie_81‎, 03-29-2011 02:02 AM
    • Replies: 0
    • Views: 4,221
    03-29-2011, 02:02 AM Go to last post
  40. Interactions cancel my main effects

    I was looking at the effects of : poverty, political interest, satisfaction with democracy and political trust on political participation through...

    Started by Annvdb‎, 04-15-2014 12:49 AM
    • Replies: 5
    • Views: 1,437
    04-15-2014, 03:13 AM Go to last post
  41. 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: 1,731
    05-23-2014, 12:01 AM Go to last post
  42. 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: 1,523
    05-24-2014, 12:12 AM Go to last post
  43. 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: 2,164
    06-11-2014, 04:36 PM Go to last post
  44. Beta weights and correlations

    Dear all, I have used regression to explain a dependent variable with a number of independent variables. I expected independent variables which...

    Started by Anthony_1000‎, 06-04-2016 04:05 AM
    beta weights, correlations
    • Replies: 0
    • Views: 861
    06-04-2016, 04:05 AM Go to last post
  45. deviance

    can anybody please tell me why we need to multiply difference of likelyhoods by "-2"? Where this 2 came from, why not 3? Could not find answer

    Started by antonitsin‎, 07-27-2011 02:25 PM
    deviance, glm diagnostocs
    • Replies: 3
    • Views: 2,170
    07-29-2011, 11:24 AM Go to last post
  46. Solving Multicollinearity Issues

    Dear Community, Currently I am modeling a multiple regression for a research project with Stata. I want to examine the influence of...

    Started by AntonR‎, 02-05-2016 09:53 AM
    • Replies: 11
    • Views: 2,247
    02-22-2016, 08:59 AM Go to last post
  47. Information Criterion to compare different linear models

    Dear Community, In order to perform a price forecast, I built four linear models:1-3 have one independent variable, 4 has two independent...

    Started by AntonR‎, 03-30-2016 08:38 AM
    • Replies: 1
    • Views: 1,121
    04-05-2016, 07:25 AM Go to last post
  48. Displaying multiple regression

    Dear stats experts - I wondering if it's possible to display a multiple regression with three predictors that are all significant on a graph. ...

    Started by antonzzz‎, 11-30-2011 06:50 AM
    • Replies: 0
    • Views: 1,605
    11-30-2011, 06:50 AM Go to last post
  49. Poisson distribution - goodness of fit

    I want to test goodness of fit for poisson distribution for a very large data set (~millions of records). Can anybody suggest a method? All the...

    Started by anujg‎, 07-13-2011 03:57 AM
    chi square, discrete random variables, goodness of fit, large data sets, poisson distribution
    • Replies: 1
    • Views: 2,913
    07-13-2011, 04:20 AM Go to last post
  50. how to perform autocorrelation test in panel data analysis?

    anyobody knows how to perform autocorrelation test in panel data analysis? the choosen model is fixed effect model. please reply soon

    Started by anwarlatif‎, 06-04-2012 06:03 AM
    • Replies: 0
    • Views: 1,472
    06-04-2012, 06:03 AM Go to last post
  51. Question autocorrelation test?

    should i perform an autocorrelation test such as DW test to a cross-sectional data? what actually autocorrelation means for cross-sectional data?...

    Started by anwarlatif‎, 06-23-2012 02:52 AM
    • Replies: 0
    • Views: 1,306
    06-23-2012, 02:52 AM Go to last post
  52. MLR equivalent for repeated measures, multiple correlated responses

    I'd like to determine the best approach to determining effect sizes for a set of experimental data with multiple correlated responses. Due to...

    Started by Aorus‎, 06-19-2014 11:05 AM
    effect size, mixed model, multivariate analysis, repeated measures
    • Replies: 0
    • Views: 1,159
    06-19-2014, 11:05 AM Go to last post
  53. 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: 2,675
    10-06-2016, 08:33 AM Go to last post
  54. Question when to perform a multiple regression test

    I have compared my treatment effect for the 4 variables to see which one was affected. Only one variable changed significantly pre vs. post. Can...

    Started by ApeWorld‎, 07-24-2013 06:44 AM
    • Replies: 10
    • Views: 2,417
    07-25-2013, 05:09 PM Go to last post
  55. Exclamation Problem interpreting Multiple Regression on Video Game Sales

    Hi everyone, I am a new member, I am so glad to have found the forum. I'm tearing my hair out about this problem. These are my results: ...

    Started by aplfalcon‎, 11-09-2009 10:17 PM
    • Replies: 3
    • Views: 5,242
    11-11-2009, 04:28 PM Go to last post
  56. Linear Regression and Linear Algebra

    It's been years since my (intro) linear algebra course, so I'm unsure of this. If I perform a multiple linear regression that included indicator...

    Started by APOCooter‎, 12-04-2013 10:24 PM
    • Replies: 2
    • Views: 1,711
    12-04-2013, 10:34 PM Go to last post
  57. Regression or regression alternatives for data missing not at random

    I am analyzing the results of a satisfaction survey. The research question or goal is to determine whether or not (dis-)satisfaction with...

    Started by appendix‎, 07-29-2017 09:08 PM
    • Replies: 4
    • Views: 307
    07-31-2017, 02:43 PM Go to last post
  58. SPSS and regression - possible dummy coding?

    I am struggling to run an analysis of this data. I have 3 levels of teaching methods as one independent variable, I also have a dependent outcome of...

    Started by apperception‎, 11-28-2012 01:42 AM
    • Replies: 1
    • Views: 2,216
    11-28-2012, 02:45 AM Go to last post
  59. help needed with two groups.

    i'm sorry if this is an incredibly stupid question, this is something i've never done before. i'm doing a study which involves asking two groups the...

    Started by appletoothpaste‎, 06-04-2013 08:15 PM
    • Replies: 1
    • Views: 1,019
    06-04-2013, 08:22 PM Go to last post
  60. Same point of a graph? Novice needs guidance!

    Dear All, I'm a BSc student currently involved in materials testing. In several of my tests I am getting a graph plotting extension(mm) vs....

    Started by Apprentice‎, 03-24-2011 04:45 PM
    • Replies: 1
    • Views: 2,356
    03-24-2011, 05:15 PM Go to last post

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