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# Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. ### External validation of a log reg model using Nagelkerkes R2 w/ fixed parameters

I have a dataset containing a point score (an integer between 0-41) and mortality (0/1) for a sample. I have performed a logistic regression...

• Replies: 0
• Views: 428
03-30-2017, 08:05 AM
2. ### % dependent and independent variables

Hi all is a linear regression model appropriate when both the dependent and independent variables are % values of the total population in any given...

• Replies: 0
• Views: 647
03-27-2017, 01:48 PM
3. ### Statistical proofs for experts

Hello community. Is anyone expert enough to find the solutions to these two problems?

• Replies: 2
• Views: 1,228
03-26-2017, 11:41 AM
4. ### SPSS is kicking out my variables [regression]

So I am doing a multiple regression, with some independent variables. For control variables, I created dummies for the years. I have five years...

• Replies: 8
• Views: 1,141
03-24-2017, 10:59 AM
5. ### What do you do it you can't increase X by one level while holding all other X constan

Classical regression defines the slope as the change in Y for a one unit change in X holding all other X constant (or so I believe). :p What happens...

• Replies: 7
• Views: 998
03-22-2017, 06:19 PM
6. ### Multiple regression analysis: linear or logistic?

Hello! I have a question regarding multiple regression analysis: for numerical variable I should use linear regression and for dichotomous...

• Replies: 1
• Views: 1,054
03-21-2017, 04:18 PM
7. ### How to choose best robust regression model?

Hello. There are several robust regression methods like LAR-(aka LAV-, LAD-, L1-Norm-)Regression, Quantil-Regression, M-Estimator, ... They are...

• Replies: 15
• Views: 4,488
03-21-2017, 02:05 PM
8. ### lg10 versus ln

Hi there, I have a log transformation question. At school, we always used the ln() function in SPSS, but I recently found out that there is a...

• Replies: 3
• Views: 1,812
03-21-2017, 11:25 AM
9. ### Panel study, multiple linear regression, assumptions

Hey. I am doing a project where I am studying a set of companies over a 7-year period. I am doing a multiple linear regression analysis either...

• Replies: 0
• Views: 623
03-21-2017, 05:54 AM
10. ### log transformations

This has confused me for years. Commonly in financial analysis you log Y or sometimes an X. I have never been sure if when you log Y you have to...

• Replies: 5
• Views: 1,099
03-20-2017, 03:08 PM
11. ### Instrumental variables in system of equation

Hi everybody, I have a simultaneous equation model in which I want to forecast long term rates in USA and Europe with Eviews. I want to use TLS to...

• Replies: 0
• Views: 594
03-20-2017, 10:12 AM
12. ### Multiple regression analysis: multicollinearity problem

Dear For my research I'm using interactions in a multiple regression analysis to test the influence of the IV on the DV with moderators. My...

• Replies: 12
• Views: 1,494
03-19-2017, 02:14 PM
13. ### When log transformation

Hello, I am a bit confused with WHY and WHEN you should take the log of the dependent variable and/or independent variables, after running a...

• Replies: 4
• Views: 1,082
03-17-2017, 08:23 AM
14. ### Multi-Stage models: How to do it in practice?

Dear all, I need help with understanding the approach of so called "Multi-Stage modeling". I encountered a paper/research related to comparison of...

• Replies: 0
• Views: 968
03-15-2017, 04:02 AM
15. ### Relative impact of an X on Y.

This is probably the most important question I get asked to do, and I have never found a great answer for it (of course there may not be one). If you...

• Replies: 17
• Views: 3,858
03-14-2017, 03:32 PM
16. ### 2 or more type of categorical variable with multinomial logistic regression

Dear sir Good evening from Japan I would like to know about usage of multinomial logistic regression In my analysis have different type of (2...

• Replies: 0
• Views: 891
03-14-2017, 08:47 AM
17. ### How to run AIC and Logit on Panel Data?

I've data for 10 banks over a period of last 10 years. I've financial ratios for each bank corresponding to each financial year. There are 20 such...

• Replies: 0
• Views: 1,359
03-14-2017, 05:03 AM
18. ### Multiple linear regression: What to do if I have a low Durbin-Watson value?

I am investigating to what extent do Temperature, Rainfall, GDP per capita, Population, Livestock and Arable Land (IVs) predict Food Calories...

• Replies: 15
• Views: 3,039
03-13-2017, 10:41 AM
19. ### Robust Regression v. Transformation of Variable (or both?)

Hello everyone, I have a question about a regression I am running. I believe it's a pretty basic question, although after a couple hours...

• Replies: 5
• Views: 1,396
03-13-2017, 10:30 AM
20. ### Moderation at some levels of moderator but not in overall model

Hello I have three continuous variables one of which I have hypothesised to be a moderator. In the overall regression model there is no...

• Replies: 3
• Views: 805
03-10-2017, 03:04 PM
21. ### Interaction not significant but Johnson-Neyman finding significant regions

I'm using the PROCESS macro and applying the Johnson-Neyman technique to some simple moderation analyses. I'm not quite sure what to make of some of...

• Replies: 3
• Views: 1,979
03-10-2017, 09:11 AM
22. ### Moderated Regression Non-Signficant but Subgroup Correlation Significant??

Hi Guys, I'm having a bit of trouble trying to figure out some of my statistics and wonder if any one has some ideas for me? I've run a moderated...

• Replies: 3
• Views: 2,967
03-10-2017, 06:35 AM
23. ### Problems with the interpretation of a moderation analysis

Hi there, I am undertaking a moderated regression analysis for an experiment I have conducted using SPSS 20.(With an add-on developed by Andrew...

• Replies: 1
• Views: 1,802
03-10-2017, 06:30 AM
24. ### Generate a new Y-Varible (1/0 Defect/nonDefect)?

Hello I’m currently assigned a task where I need to investigate if there is any correlation between 15 X-variables (originates from process...

• Replies: 0
• Views: 1,036
03-09-2017, 05:38 AM
25. ### Partial least squares (path analysis) - why and how to interpret attached results?

For my research, I have a model with various mediators and one moderating variable (see image). I derived my data from an experiment. Short...

• Replies: 0
• Views: 989
03-09-2017, 04:30 AM
26. ### Taking (years) into consideration Multiple regression?

Figured it out

• Replies: 1
• Views: 926
03-08-2017, 03:45 PM
27. ### Why a simple linear regression (OLS)

Hi! This forum is so helpful :tup: I just can't seem to find an answer to my question though. I am planning on doing a multiple regression...

• Replies: 18
• Views: 5,197
03-08-2017, 04:04 AM
28. ### 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: 1,665
03-08-2017, 03:30 AM
29. ### Python PowerDivergence

I am no statistician but I was asked to provide some quantification of the goodness-of-fit of a theory. This theory only uses one parameter and that...

• Replies: 0
• Views: 1,362
03-07-2017, 11:51 AM
30. ### Beta Regression Coefficients

In a simple model, x is a continuous (normally distributed) variable predicting y. Since y values are proportions ranging from 0 to 1 (0%-100%),...

• Replies: 7
• Views: 1,935
03-06-2017, 11:44 AM
31. ### Process Model and Covariates

Hi all, I am having difficulty with Andrew Hayes' Process tool and my mediation model. Is it acceptable to run a mediation analysis with a...

• Replies: 6
• Views: 2,356
03-05-2017, 02:59 PM
32. ### The bootstrap method for medical modelling

I am part of a team creating a model for paediatric hospitalised patients and would appreciate some help. We are looking to produce an accurate...

• Replies: 5
• Views: 2,662
03-04-2017, 10:01 PM
33. ### SPSS: transforming variables?

I am doing a single linear regression and multiple regression, but I have a question about my independent variable. My independent variables (X)...

• Replies: 2
• Views: 2,256
03-02-2017, 07:27 AM
34. ### beta coefficient for a logistic regression

I consider a simple model with binary variable Y (diseased vs non-diseased), variable X normally distributed among diseased and non-diseased with...

• Replies: 7
• Views: 1,662
03-01-2017, 04:57 PM
35. ### Expert Help Required - Multiple Regression with Nominal and Scale Variables

Hi all, I'm having huge issues with the assumptions of multiple regression and determining whether I am running my analysis correctly. First of...

• Replies: 4
• Views: 2,382
02-27-2017, 01:25 PM
36. ### logistic regression and ordinal logistic regression

Hi, I am currently studying the ordinal logistic regression. I want to ask: is there a relationship between logistic regression with logistic...

• Replies: 2
• Views: 1,831
02-27-2017, 11:01 AM
37. ### Whether to Include Treatments with 0 means Nonlinear Modeling

Hi, I'm trying to compare the effect of temperature on developmental rate using various nonlinear models. The temperatures range 10-35 degrees C....

• Replies: 0
• Views: 1,559
02-23-2017, 11:21 PM
38. ### confidence interval and p value

dialysis Odds Ratio Std. Err. z P>z logintercept .0001105 .0003682 -2.73 0.006 1.61e-07 .0756841 Dear , I am have...

• Replies: 2
• Views: 2,242
02-23-2017, 08:30 PM
39. ### Instrumental variables with S&P 500 Health Care Index

Hello everyone, I am new to this forum and I would need some help on a time series regression model with financial variables. I am regressing...

• Replies: 3
• Views: 2,120
02-23-2017, 08:26 PM
40. ### regression analysis for very small sample?

hello, my study is about "The impact of corporate governance on firm performance". my sample size is 5 compagnies i have 6 IV and 1 DV so my Q...

• Replies: 7
• Views: 2,420
02-21-2017, 04:32 PM
41. ### Very Small Sample Size -What multivariate analysis should be used

Dear all, Good day! I'm having a hard time researching for possible multivariate analysis to be used in my study. I have less than 10 sample...

• Replies: 6
• Views: 9,763
02-20-2017, 01:34 PM
42. ### Minimisation of specific residuals

Hello, I hope that I can finde someone here to help me with the following problem: I have 11 points with x and y values. Those points are...

• Replies: 7
• Views: 2,799
02-20-2017, 04:43 AM
43. ### 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: 2,071
02-15-2017, 05:58 PM
44. ### How to get a relationship equation in between variables of a multi-physics problem?

I have a multiphysics problem in which my output voltage data is dependent on the input oscillation frequency. There are four physics coupled in the...

• Replies: 1
• Views: 1,245
02-10-2017, 05:36 PM
45. ### Univariate x multivariate model

Hello everyone! I just started modelling and I have a question about how to interpret my results. I built 3 models, two univatiates (Z ~ bX +...

• Replies: 0
• Views: 1,541
02-08-2017, 05:24 PM
46. ### Winsorizing when I have different size groups

I have a sample that consists of large, medium, and small firms and i want to run a separate regression for each size group. When I winsorize a...

• Replies: 0
• Views: 1,999
02-03-2017, 04:41 AM
47. ### Forecast Analysis Inquiry

Im trying to perform some time series analysis on 2015 and 2016 monthly recorded data to see what method is best for forecasting 2016 monthly values...

• Replies: 1
• Views: 2,433
02-01-2017, 02:15 AM
48. ### Binary Logistic Regression

Hello, I'm new here. I have got the following problem: - my dependent variable is dichotomous: male / female - my independent variable: how...

• Replies: 0
• Views: 2,014
01-30-2017, 05:02 PM
49. ### 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...

• Replies: 2
• Views: 2,244
01-30-2017, 03:42 PM
50. ### robust regression estimators

Hi everyone. I have studied the robust regression a few weeks ago and I want to have a lot of insight about it. After reading some sources, I know...

• Replies: 2
• Views: 3,166
01-30-2017, 11:00 AM
51. ### Anova/Linear regression

I have two datasets, one collected by one instrument, say A, and one by another, say B, at the same time. I need to use instrument B to calibrate...

• Replies: 0
• Views: 1,975
01-30-2017, 05:45 AM
52. ### Estimate Residuals

Hi statistics experts, I run a usual regression model (1 dependent, different independent variables) for each industry-year and save the residuals...

• Replies: 2
• Views: 2,382
M90
01-29-2017, 12:03 PM
53. ### SPSS: regression analysis for 3x2 experiment. How to test for interaction

Dear all, For my research I have the following facts: - I have two categorical IVs: - treatment condition called competition, which has...

• Replies: 4
• Views: 2,991
01-29-2017, 04:19 AM
54. ### Help: regression analysis for categorical/binary exposure

Cell biologist in need of stats help! I am using stata to analyse my data and have two questions: 1. I have a continuous outcome (hippocampal...

• Replies: 3
• Views: 2,823
01-28-2017, 11:45 PM

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