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# Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. ### RMA regression

Hello! I'm trying to fit regression as a modeling approach between predictor variables (radiation, temperature, relative humidity, etc.) and...

• Replies: 0
• Views: 2,708
05-21-2013, 03:18 PM
2. ### How do you intrepret coefficients in logistic regression?

I am studying whether opinion polls predict presidential elections in one course project. The data I have is of following kind. I have a binary...

• Replies: 3
• Views: 2,481
10-08-2013, 04:35 AM
3. ### Multiple Regression Equation.

Can someone please tell me if this if correct or not. I'm such an idiot. if i have coefficients of : intercept = -17.514 Food =-0.351...

• Replies: 0
• Views: 2,603
el1
05-29-2008, 07:57 PM
4. ### Help! my model isn't predicting any yes outcomes and don't know why

I am producing a logistical regression analysis to find a model to predict whether someone has minor mental health problems or not. I'm almost...

• Replies: 9
• Views: 2,047
04-20-2012, 02:57 AM
5. ### Statistic question in a simple marketing implementation?

Hello, I know this question can be too simple for this forum, but Im new here and was not sure where to post. I'm trying to build model for a...

• Replies: 0
• Views: 2,135
12-12-2010, 11:23 AM
6. ### WLS Regression Weights

I am working on a problem for which I need to do a multiple regression that involves a dependent variable and two independent variables. The...

• Replies: 0
• Views: 3,335
06-16-2012, 02:08 PM
7. ### Source for WLS Regression

I'm working on a paper in which I run a study using a WLS regression methodology. I understand conceptually how it works and can run it easily in R....

• Replies: 0
• Views: 1,000
08-01-2013, 11:10 AM
8. ### multiple regression and mediators

Hi I have 10 independent variables and 1 dependent variable. Of the 10 i have selected 4 variables as my predictors for my multiple regression. I...

• Replies: 4
• Views: 3,931
05-02-2012, 05:57 AM
9. ### Logistic regression using dummies with dependent "holes"

Hi, I'm trying to do do a logistic regression using R. I want to regress using binary dependent variable Y as granted or not grated (1 or 0)...

• Replies: 0
• Views: 1,363
03-24-2015, 06:15 PM
10. ### Commonality analyses/structure coefficients/relative importance

Dear members: I am conducing a 2-way moderation and I would like to determine the meaningful implications of each of my predictors (IV, Moderator,...

• Replies: 0
• Views: 778
12-17-2015, 09:34 PM
11. ### 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...

• Replies: 13
• Views: 3,449
11-02-2011, 01:36 PM
12. ### 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...

• Replies: 0
• Views: 3,022
11-08-2011, 09:02 AM
13. ### Multiple regression analysis-coefficient table

Hi, I am currently working on a project which requires a multiple regression analysis (using enter-standard method) and I am stuck with...

• Replies: 5
• Views: 1,908
szm
11-22-2013, 04:55 PM
14. ### Linear regression, nonlinear regression or something else?

Hi! I do apologies in advance for any misuse of terms or the lack of understanding in statistics - as I've only realised, after Googling for hours,...

• Replies: 0
• Views: 3,619
03-16-2011, 10:56 PM
15. ### Interpreting White test for heteroskedasticity

Hello, i am using Gretl software and run a OLS regression on a set of panel data. I am trying to find out if there is hetereskedasticity in the...

• Replies: 1
• Views: 22,812
12-10-2013, 06:49 PM
16. ### Regression analysis with categorical variables

Hey everyone, I have a problem. For a research project I have to investigate statistically if some some variables correlate with eachother (i.e....

• Replies: 1
• Views: 1,172
05-16-2014, 07:56 AM
17. ### [SOLVED] How to interpret negative regression estimate?

Hi, I’m learning about regression analysis and have negative estimates for the grade-point average variable in two categories of a multinomial...

• Replies: 10
• Views: 4,792
02-03-2012, 03:10 AM

Hello, I have a distribution which looks like a Khi-2 distribution, which model is most appropriate? I try linear regression, but normal...

• Replies: 5
• Views: 1,734
07-22-2016, 03:13 AM
19. ### Ordered Probit Model

I am using the ordered probit model in my regression, and I have some questions. 1. What are the basic assumptions? 2. which tests should be run?...

• Replies: 0
• Views: 1,507
06-03-2015, 07:29 PM
20. ### Violation of linearity assumption

Hi, I'm a beginner at statistics. I'm doing a simple linear regression and I have a scatterplot of the residuals versus the predicted values and I...

• Replies: 10
• Views: 4,708
03-09-2013, 10:47 AM
21. ### Regression analysis with independant variable (error) and multiple dependant variable

So I took a lot of data (~10000) on a machine (3D printer). For each reading, I got the error and a lot of different parameter (speed, voltage,...

• Replies: 26
• Views: 6,575
11-21-2014, 08:24 AM
22. ### Coefficients of delta-lognormal modeling

I am trying to understand delta-lognormal modeling. Please bear with me. I am applying this method to some fishery data. This method combines...

• Replies: 2
• Views: 3,964
03-16-2012, 11:38 AM
23. ### warning at logistic reg.

Hello, I am trying to do logistic regression analysis. The problem I face is that this warning comes out in my output : Due to redundancies,...

• Replies: 0
• Views: 2,628
03-08-2012, 06:51 AM
24. ### [newbie dumb question] Why is that the assumption of E(u)=0 essential for interences?

If E(u)=0 is violated, how would it affect the inference of parameters, such as by using t-statistics? My understanding is that if E(u)=0 is...

• Replies: 3
• Views: 5,348
02-10-2011, 12:27 AM
25. ### two ANOVAs, which to use?

Hypothetical: you have ANOVA tables from two regressions. One is regressed on more variables than the other. The one with more variables, has a low...

• Replies: 6
• Views: 2,528
12-13-2011, 10:12 AM
26. ### Clustered Robust SEs or Multilevel Modeling approach? HELP NEEDED :-)

Hello everyone, I would love to hear your quick reaction to a particular data structure my colleagues and I are working with because we keep...

• Replies: 7
• Views: 1,803
04-01-2014, 10:13 AM
27. ### Multiple linear regression + QQplots problem! Includes Pics!

Hello I want to do multiple linear regression, but one of the requirements is the residuals to be normally distributed, and I can check that with...

• Replies: 3
• Views: 3,054
11-30-2010, 12:34 PM
28. ### Binomial regression with x as the dependent variable and n as an independent variable

Hi all I have a sample size of 100. Out of 100 a certain number are successful at stage one. Of those successful at stage one some are successful...

• Replies: 15
• Views: 4,375
03-08-2012, 05:59 PM
29. ### Generalised linear model vs transpose data and the general linear model

Could someone please explain the difference in technical terms between a generalised linear model with the appropriate link function and applying a...

• Replies: 0
• Views: 1,177
02-13-2014, 09:40 AM
30. ### Regression of calories consumed and body weight

So I want to understand whether the relationship between calories consumed and body weight differs between males and females. I have data from 20...

• Replies: 2
• Views: 918
07-17-2014, 10:30 AM
31. ### Analysis of Data over time?

Hi! I am investigating animal social networks and I have long term data set spanning 15 years. I have looked at each animals 'network position'...

• Replies: 0
• Views: 3,211
12-13-2010, 06:31 AM
32. ### Group size analysis over time

Hi, I was wondering if anyone could help me please. I am looking at how group size changes with the amount of food available in a group of...

• Replies: 0
• Views: 1,974
09-13-2011, 08:21 AM
33. ### Linear regression - missing data

Hi, I am running a multiple linear regression which seems to be working well except for one problem: One of the explanatory variables is: does...

• Replies: 0
• Views: 982
07-08-2014, 02:46 AM
34. ### Help with understanding logit coefficient

Hi everyone, I'm very new to statistics and I would very much appreciate any help you can give me in understanding the coefficients in a logit model....

• Replies: 7
• Views: 1,973
03-28-2013, 10:19 AM
35. ### have a .por file, no spss, need to run analysis by tomorrow

Hi all.. I thought I could open the .por file I have on my home computer but it turns out the version I have doesn't open a file like this with more...

• Replies: 0
• Views: 3,796
11-23-2009, 09:13 PM
36. ### Need help - what model, what analysis?

Hi all, please somebody help give me some direction... I have worked long and hard at trying to figure this out for days so please realize I'm not...

• Replies: 1
• Views: 2,277
12-14-2009, 05:00 PM
37. ### The absolute dependence in panel data

Hello, I want to ask something related to the panel data analysis. In traditional regression and correlation analysis, it is clear that if the...

• Replies: 1
• Views: 1,202
08-15-2014, 01:39 AM
38. ### Pooled GLS and POLS

Hello everyone, This semester I'm studying, OLS, GLS, RE, FE, MLE, and a lot of beautiful concepts :D. But I get a little bit concerning the...

• Replies: 0
• Views: 1,577
06-18-2016, 07:57 AM
39. ### Dis./Avantadges of estimating of binary response model with OLS

In the Maximum Likelihood Estimator context, I can't find answers for those two questions: - What are the advantages and disadvantages of...

• Replies: 8
• Views: 2,050
07-02-2016, 12:47 PM
40. ### Linear Regression modeling on Graphics Cards: Am I missing something?

:wave: I am trying to understand how to choose a graphics card based on a price to performance value for each card. I have a number of...

• Replies: 2
• Views: 1,809
12-22-2012, 03:31 PM
41. ### Regression on count data

Is it a problem if different observations have different "birth times"? If we want to predict mean count per month (via poisson regression for...

• Replies: 9
• Views: 2,027
05-12-2014, 11:01 PM
42. ### Autoregression model implementation

Hello forum users! I have a urgent question :/ I need to implement an AR(1) Model into Oxmetrics. Optimize my parameters using the OLS method. ...

• Replies: 0
• Views: 1,575
01-22-2014, 01:20 PM
43. ### More than 1 squared term in a regression equation?

If I have a multiple regression model in which there are more than 1 or 2 terms that are non-linear with the dependent variable Y, then what can I do...

• Replies: 0
• Views: 2,887
10-19-2007, 11:34 AM
44. ### Assessing SSE(sum of squared errors)?

Hello, I can't figure out how to solve this question: Consider these summary statistics for a random sample: Mean of x=20 Mean of y=10...

• Replies: 3
• Views: 2,044
03-24-2013, 03:27 PM
45. ### Geographically weighted regression (GWR)

Hi, I am looking for some info on possibility of making a GW regression with a dependent variable as floating point numbers and independent...

• Replies: 0
• Views: 2,775
02-02-2010, 05:45 AM
46. ### Variance inflation and interactions between variables?

Hello everyone I am having trouble interpreting some of my results. I am using logistic regression to infer a model based on measured data....

• Replies: 8
• Views: 13,789
01-05-2015, 01:34 PM
47. ### Heteroscedasticity

Hello, I've done a search on this but have not found any similar threads. Using EVIEWS White test I have identified heteroscedasticity in my...

• Replies: 1
• Views: 4,754
01-09-2011, 01:44 PM
48. ### Regression analysis : with ranking data

In my survey I have independent variables of age , sex and length of membership I have then have a question where I ask participants to rank 5...

• Replies: 2
• Views: 1,297
Epy
08-24-2016, 04:21 AM
49. ### Difference-in-difference regression

Hello, I have a problem with my current research project and I am not very experienced with statistics so it would be great to find some help...

• Replies: 0
• Views: 1,219
ERa
08-16-2015, 01:46 AM
50. ### Partial Linear Regression

I have an S shaped (sigmoid) curve with moderate noise and I need to estimate the slope of the straight line segment around the hypothetical...

• Replies: 10
• Views: 2,439
08-27-2013, 06:06 AM
51. ### Generalized Linear Mixed Models without mixed effects. A meaningless question?

Hi there, I know what fixed and random effects in linear models or GLM are. I am using Generalized Linear Mixed Models (GLMM) to handle this. So...

• Replies: 3
• Views: 1,353
03-23-2015, 09:02 PM
52. ### Time series help, Derive COV in a random walk process

I could use some help deriving the covariance between Y_t and Y_t+h given the random walk process Y_t = Y_t-1+e_t And also the correlation...

• Replies: 3
• Views: 1,706
01-31-2013, 11:52 AM
53. ### Multiple linear regression vs logistic regression

I am not a statistician myself, and haven't done regressions for very long time and have a basic question. I need to do multiple regression for...

• Replies: 5
• Views: 2,475
12-29-2014, 08:18 PM
54. ### Using pooled OLS when running a model with panel data?

How bad is it to use pooled OLS instead of fixed effects when you have 7 years of panel data? From what I have understood, the risk is that the...

• Replies: 1
• Views: 6,213
07-12-2014, 06:46 AM
55. ### Generalized Linear Model: help interpeting interaction

Hello! I apologise in advance if I missed it, but I couldn't find an answer in previous threads. I run a generalized linear model with 1...

• Replies: 1
• Views: 1,625
06-29-2016, 07:54 AM
56. ### [stata] interaction terms in conditional logit

Dear all, There is a famous paper by Norton et al. (2003) which describes why stata's wrong about interaction terms in logit regressions. They...

• Replies: 2
• Views: 3,643
05-08-2014, 04:23 AM
57. ### zero-inflated count data

I want to do a regression where both the response and an explanatory variable are zero-inflated counts. It's fairly straightforward to do a ZIP...

• Replies: 1
• Views: 1,736
07-11-2012, 05:35 PM

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