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# Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. ### Help with Regression Analysis problem and time delay

Good morning all! I am presently working on a paper, and am grappling with a statistical problem that is outside of my area of expertise (I am...

• Replies: 3
• Views: 2,467
07-13-2012, 04:45 AM
2. ### Combining panel (10 years of data) and survey data (1 year) in one regression

Quick question regarding a problem I am having: My research explores determinants of municipal recycling behavior, evaluating the effects of...

• Replies: 0
• Views: 2,485
02-07-2013, 01:23 PM
3. ### Dynamic panels

Did someone have done a serious work/report on dynamic panel with stata or Eviews? Ibegin in this field for my PHD.Please email...

• Replies: 0
• Views: 1,893
02-15-2017, 05:58 PM
4. ### Want to regress (statistically), but can it be done?

I have population size over time with many gaps (the unfortunate reality of many biological data sets!): there are only 12 points over 37 years. ...

• Replies: 2
• Views: 2,479
06-29-2010, 01:43 PM
5. ### Common Factor Restrictions

Hello, I am currently writing my Master-Thesis and got a problem, which I have been trying to solve for the last three days. I have to conduct a...

• Replies: 0
• Views: 2,428
10-02-2012, 03:19 AM
6. ### HELP: Generate a new dummy variable

Hey folks, for my master thesis and my logit regression I need to create a dummy variable, but this one is a bit more complex than just a simple...

• Replies: 2
• Views: 1,238
01-26-2014, 02:37 PM
7. ### Multiple logistic Regression Power Analysis

Hi to everybody, Please does anybody can help me to solve this problem? I have a multiple logistic regression model with more than one BINARY...

• Replies: 1
• Views: 4,863
12-22-2008, 09:04 AM
8. ### reporting descriptive Stats when using gender in multiple regression.

Hi, I am relatively new to research methods and using SPSS. I wanted to perform multiple regression analysis using categorical and continuous...

• Replies: 6
• Views: 4,333
07-19-2012, 02:39 PM
9. ### SPSS- Binary Logisitc Regression- what to do when there are few significant variables

Hi, I am looking at the factors associated with successful smoking cessation. I have two groups (smokers and ex-smokers) so I am using binary...

• Replies: 0
• Views: 1,370
09-07-2013, 07:48 AM
10. ### Paired t-test - Inferring causality between two variables (before/after)

Hi, Suppose I have the following data measuring Gene expression (how active the gene is) and blood value (for example Very Low Density...

• Replies: 0
• Views: 1,652
11-19-2013, 06:23 AM
11. ### Non linear regression and under-/overvaluation calc.

As you know the Security Market Line is used to find under- or overvalued securities (if they plot below or above the SML). I am doing something...

• Replies: 0
• Views: 1,536
07-04-2010, 11:31 PM
12. ### Appropriate logistic regression model to control for confounders?

I am working with a cross-sectional study sample (N=601). The goal of my research is to investigate if there is an association between a disease (X)...

• Replies: 2
• Views: 9,811
02-18-2011, 05:20 PM
13. ### Instrumental variable apporach: two stage least squares

Hello everyone, I want to test cross sectional data with a household survey with 60k plus of respondents (however missing data result in overall...

• Replies: 1
• Views: 1,526
01-11-2016, 08:05 PM
14. ### Effect size+power calculations for spotlight analyses

EDIT: I mistakenly typed "spotlight" when I really meant "floodlight". Corrected for that. I have a question about calculating effects sizes and...

• Replies: 2
• Views: 1,060
06-28-2016, 01:45 PM
15. ### Autocorrelation/Regression

Post deleted

• Replies: 4
• Views: 3,006
10-29-2011, 09:58 AM
16. ### Dynamic Regression

Can we determine dominant factors using dynamic regression model?

• Replies: 0
• Views: 1,532
10-29-2011, 10:36 PM
17. ### IV results interpretation

Hello, I have an endougenous variable x and an instrument for it, variable z. The instrument is (significantly) negatively related to x. My...

• Replies: 0
• Views: 2,279
01-17-2012, 07:24 AM
18. ### IV probit and Ivreg

Hello, When I use ivreg in Stata and cluster standard errors my results show that the independent variable is significant. However, when I use...

• Replies: 0
• Views: 4,018
01-23-2012, 02:31 PM
19. ### Beta of 0 and p-value of 1

Hello, I am estimating a 2 stages least squares model. My first stage is fine ( strong instrument) but my second stage gives my coëfficiënt in...

• Replies: 3
• Views: 2,794
09-10-2013, 02:08 PM
20. ### How can I find the values of B0, B1, B2 for MLRM?

Hi guys, can anyone please help me out on this one? I have to find the values of β1,β2 and β3 for a MLRM - Multiple Linear Regression Method. ...

• Replies: 2
• Views: 2,134
01-08-2013, 10:39 AM
21. ### Grouping response in logistic regression

Hi, I'm new to statistics and hope to find some help here. I can't find any information on why in logistic regression a binary response is often...

• Replies: 2
• Views: 1,981
02-17-2012, 11:10 AM
22. ### Help! model comparison in logistic regression

Dear all, I'm working on a logistic regression and have now obtained two competing models (one computed by hand, the other with "step" in R). In...

• Replies: 3
• Views: 3,090
edi
03-16-2012, 03:17 AM
23. ### Dummy regression for graded paired comparison

Hi all, I'm trying to create a dummy regression for a conjoint analysis with graded paired comparison. here is an example of one paired...

• Replies: 0
• Views: 2,784
08-27-2010, 03:09 AM
24. ### Standard Error Correction in Two-Stage Estimation

There have been many papers on error corrections for two-stage estimation, such as Murphy-Topel (85). The basic model proceeds as follows: Stage 1:...

• Replies: 0
• Views: 2,670
11-30-2013, 11:18 PM

I've been tasked with conducting a statistical analysis and have encountered a few potentially significant problems. As its been quite some time...

• Replies: 0
• Views: 2,400
07-07-2009, 08:21 AM
26. ### Multiple linear regression: square root transformation of predictor variable

I have used a square root transformation to successfully correct the positive skew of a predictor variable in a hierarchical multiple linear...

• Replies: 0
• Views: 1,742
05-25-2016, 03:38 PM
27. ### How to find Significant difference in R2

Hi My study requires comparing the regression square got from accounting policy 1 and from accounting policy 2. Same set of samples are used in...

• Replies: 0
• Views: 1,672
04-02-2015, 02:23 AM
28. ### Penalty Analysis

Hi, how do we interpret the result of penalty analysis having negative mean drop (which is sig) as well as negative penalties (which is also sig)....

• Replies: 1
• Views: 6,885
07-13-2011, 09:16 PM
29. ### Algebraic Definition of Residuals from a Regression

I just need a hint on how to get started on this. Any advice? Define the residual from a regression (one independent variable) algebraically and...

• Replies: 1
• Views: 3,187
03-02-2011, 01:31 PM
30. ### comparing regression coefficients between different models to see if they are similar

Hi all; This is a very elementary problem; but unfortunately, my strengths do not like in statistics: I am trying to describe plant growth over...

• Replies: 8
• Views: 1,437
08-23-2013, 09:23 AM
31. ### assumption of linearity in the logit and transformation of continuous IV

Hello, I am doing logistic regression in spss for my phd research. Testing the assumption of the linearity in the logit I included in the analysis...

• Replies: 0
• Views: 3,763
05-11-2011, 04:28 AM
32. ### 10 fold cross-validation

I am looking at how good an experimental measures is to classify control group from a clinical group. I was asked to do 10-fold cross validation....

• Replies: 0
• Views: 1,981
12-09-2014, 03:14 PM
33. ### Predictions of new data based on an existing model

Could someone help how to use an existing model (in this case it is model derived from discriminant analysis) to predict a new data set.

• Replies: 0
• Views: 1,286
12-10-2014, 10:54 PM
34. ### Controlling for time

Hello, Thank-you for taking the time to read this post. I have managed to get myself very confused about what is (hopefully) quite a simple...

• Replies: 0
• Views: 37
10-16-2017, 08:15 AM
35. ### SPSS regression:Does this new variables add to the model fit?

PLEASE HELP ME THOSE QUESTIONS: SPSS output from a set of three regressions estimated using the auto data we explored in the tutorials. Use the...

• Replies: 1
• Views: 1,733
03-21-2014, 03:21 PM
36. ### Not Quite Quadratic Regression

Hello all, I predict an u-shaped relation between two variables, y and x. If I perform a quadratic linear regression, i.e. use a model like ...

• Replies: 5
• Views: 2,346
08-04-2012, 07:46 AM
37. ### How to choose the best predictors when b and beta indicate different predictors.

Hey everyone, for my thesis I'm investigating the relationship that can exist between the emotion of boredom and interest through the analysis of...

• Replies: 1
• Views: 2,358
07-17-2011, 10:52 AM
38. ### Comparing betas between two separate models

I have a linear regression model and results for 2001, and 2008. A particular predictor (unemployment rate) is significant in both models (p=0.000)....

• Replies: 1
• Views: 1,560
06-10-2012, 04:33 AM
39. ### Probability of Predicted Values

As I am still just learning regression and other advanced statistical analysis techniques, I have run into a question that I need help with. My Boss...

• Replies: 2
• Views: 1,614
10-01-2014, 02:08 PM
40. ### 1way anova to do multiple comparisons on dichotomous dv

Greetings! I wanted to quickly reference with someone who may know more about logistic type analyses. I am doing an analysis of a very large...

• Replies: 0
• Views: 3,110
cdo
05-18-2010, 05:25 PM
41. ### Repeated Measures model with Covariates

Hi Everyone, i am struggling with finding a good way to analyze a dataset. The design is this: I have 25(n) subjects, all of them are tested in an...

• Replies: 1
• Views: 2,908
12-16-2016, 02:23 AM
42. ### Now sure what to do now (4 variables, no interaction, significant correlated)

Hello everybody - I am in need of some statistical help as I'm a bit confused as to what to do next. I'll give you a rundown of my situation: I've...

• Replies: 7
• Views: 5,376
04-22-2010, 11:26 AM
43. ### Can I use multivariate analysis without univariate analysis?

Dear all, I have a problem in my data analysis and paper writing. Some variables (dependents) were not statistically significantly correlated...

• Replies: 14
• Views: 23,527
01-26-2016, 11:08 AM
44. ### Estimating Confidence Intevals

Hi, I have used a loglikelihood function to estimate 24 parameters. How do I construct a confidence interval given the Hessian (avaliated on the...

• Replies: 2
• Views: 1,321
01-15-2014, 11:50 PM
45. ### Moderation, GLM, and interactions. Discrepent results...

Hello all, I'm running a GLM to test for moderation. One of my interaction terms (the product of two continuous variables) looks suspicious......

• Replies: 0
• Views: 2,511
03-06-2012, 07:04 PM
46. ### Lagged independent variable (Stata)

Hello, I'm currently working with a company dataset in the form of an unbalanced panel (overall sample size: 1.300 company years, T: 10, X: ~170...

• Replies: 0
• Views: 4,486
04-23-2013, 03:55 AM
47. ### Cluster-robust standard errors needed in random effects model?

Hello, I'm currently working with a company dataset in the form of an unbalanced panel (overall sample size: 1.300 company years, T: 10, X: ~170...

• Replies: 0
• Views: 3,959
04-23-2013, 04:43 AM
48. ### Characteristics that define simple linear regression?

Can someone please tell me which three characteristics define simple linear regression? Thank you in advance.

• Replies: 4
• Views: 2,257
05-05-2014, 10:44 AM
49. ### ANCOVA - can I delete a very significant variable from a model's equation?

Hi all, I undertook a sensitivity analysis to study the contribution of explanatory variables to soil organic carbon variations. Here, the...

• Replies: 5
• Views: 1,195
11-24-2015, 07:30 AM
50. ### Help with Regression Analysis

It's been a while since I've done a regression analysis. I'm trying to run a multivariate regression analysis in Excel to determine whether or not...

• Replies: 9
• Views: 4,263
07-12-2011, 04:34 PM
51. ### [Optimization – Solver] Good model fit, but wrong standard deviation coefficients

Dear reader, I am facing an optimization problem and, at this point, I need help from someone with more knowledge than me. My goal: For a...

• Replies: 1
• Views: 22,744
04-08-2013, 04:59 PM
52. ### Linear Discriminant Analysis - Sample size requirements

As general question, Are 70 observations sufficient to design a reliable decision rule for discriminating between two groups, with a Fisher linear...

• Replies: 3
• Views: 3,710
06-16-2013, 12:49 PM
53. ### Basic regressionquestion

Hi, I am currently learning ML algorithms and implementing in R. I have a some basic questions. 1.)I know that linear regression an statistical...

• Replies: 2
• Views: 1,332
03-28-2016, 10:59 AM
54. ### Help for simple regression

My research question is: "Can we say that the number of hours of Internet use increases with Internet purchase?" with the variables: - Use of...

• Replies: 3
• Views: 1,874
05-08-2016, 06:34 PM
55. ### significance intepretation DOLS

the insignificant slopes in Time series regression become significant in DOLS. what general explanation can provide? other than- the use of...

• Replies: 0
• Views: 1,136
12-18-2014, 10:59 AM
56. ### How to do Curve fit for data

I am not able to fit curve for the data I have, and need some help. I removed metal from water and obtained the following results: days Removal...

• Replies: 5
• Views: 1,731
08-28-2013, 10:56 AM
57. ### What model/method to use to predict/impute missing values?

First of all, apologies for the long and somewhat general post. I need to analyse the following tourism-related dataset and I'd appreciate any ideas...

• Replies: 2
• Views: 1,324
03-08-2017, 03:30 AM

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