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# Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. ### Study Design for assessing efficacy of New Clinical Sign

Hi! I am looking for some guidance as to what statistical tests I would need to do to know the significance of a study. The situation is this: ...

• Replies: 0
• Views: 846
01-02-2016, 08:51 AM
2. ### Logistic fixed effects cluster-specific interpretation with cross-sectional data

I'm unsure how to interpret the output of a fixed effects (in the econometric sense) logistic regression model using cross-sectional data. I'm...

• Replies: 0
• Views: 1,667
01-01-2016, 01:07 AM
3. ### Logistic Regression of NFL Data

Week 5 picks from a logistic regression model for the NFL: http://trevorbischoff.com/nfl-2015-week-5-predictions/

• Replies: 8
• Views: 5,432
12-30-2015, 01:19 PM
4. ### 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...

• Replies: 1
• Views: 1,853
12-29-2015, 04:28 PM
5. ### Query: Using independent variables in regression.

1. When putting in independent variables in regression model, for example "income" and my outcome is health status. I can use income as categorical...

• Replies: 4
• Views: 1,871
12-29-2015, 02:07 PM
6. ### ANOVA multi-variable problem

If there is a dependent variable depending on 5 independent variables or factors, how to find the relative effect of these 5 groups on dependent...

• Replies: 3
• Views: 2,109
12-26-2015, 09:40 PM
7. ### Linear regression and dichotomous variable

Hello I would like to do a linear regression (stepwise), and one of the variables I want to enter is sick/ not sick. The other variables are from...

• Replies: 1
• Views: 2,243
12-22-2015, 07:14 AM
8. ### Percentage change of dependent variable (MLR)

Greetings, I went through SPSS regression analysis of a certain dataset, tested assumptions, and finally I got a multiple regression model:...

• Replies: 3
• Views: 6,782
12-21-2015, 03:34 PM
9. ### The assumptions of multiple regression: An article by TalkStatters!

Hi everyone, A lot of you are aware of this already, but I'm posting this to a public subforum on Quark's suggestion :) Recently a group of 3...

• Replies: 3
• Views: 91,874
12-21-2015, 02:02 PM
10. ### adding skewness and kurtosis to CAPM - regression

Suppose I have a set of monthly returns of a stock, monthly 'market' returns and some risk free rate for lets say 10 years. Performing an usually OLS...

• Replies: 1
• Views: 5,712
12-18-2015, 07:26 PM
11. ### Logistic Regression

I am looking at a medical outcome (binary) and known risk factors. There are 10 established risk factors that I will test in my sample of 300...

• Replies: 4
• Views: 1,673
12-18-2015, 10:04 AM
12. ### 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: 824
12-17-2015, 09:34 PM
13. ### Nominal predictor with 70 levels....

I have a nominal level predictor with 70 levels (its units that provide some service). I want to analyze how these units preform on an interval...

• Replies: 9
• Views: 2,834
12-16-2015, 01:44 PM
14. ### Control variable for panel analysis

i am writing a paper analyzing What is the effect of corruption on Government expenditure (education,health,military and infrastructure). I have data...

• Replies: 0
• Views: 1,146
12-16-2015, 06:55 AM
15. ### Tjur's pseuo R squared

Paul Allison recommends this now for logistic regression, but I have never run across it (it has not been formally named this, Tjur is the author who...

• Replies: 4
• Views: 3,456
12-15-2015, 09:05 PM
16. ### Logistic regression: Development of a hypothesis question

Logistic regression: Development of a hypothesis question Hello guys, I am working on my master thesis right now. I am examining...

• Replies: 2
• Views: 927
12-15-2015, 12:39 PM
17. ### AIC for evaluating transformations

I was just reading an article that seemed to say they used AIC to evaluate continuous variable transformations, I guess in a logistic model. I am...

• Replies: 1
• Views: 1,371
12-15-2015, 09:39 AM
18. ### New to statistics and Binary Logistics Regression

Dear Fellows! In search of help just found this forum and I hope there would be anyone who will help me. I am doing the Binary Logistic...

• Replies: 3
• Views: 1,723
12-12-2015, 05:53 PM
19. ### What does intercept mean in regression analysis?

I have searched it on the web but I just cant understand it. To better understand it I did one example my self. Can somebody explain me this? >...

• Replies: 3
• Views: 4,221
12-12-2015, 11:59 AM
20. ### Multi variable Regression

Dear Regression Experts, I am new in this field, I have set of data of about 1 lac entries having a total of 10 variables of which 9 are input...

• Replies: 4
• Views: 1,908
12-12-2015, 01:34 AM
21. ### Calculate estimated median survival time (by hand)

So I have some SAS code: proc lifereg data=surv_data; model event_time * censor(1) = var1 var2 var3 / distribution=weibull; output...

• Replies: 5
• Views: 2,315
12-11-2015, 01:05 PM
22. ### Tutorial Tobit Eviews 9

The tobit models, Also called a censored regression models (Tutorial Tobit Eviews 9) (Guide Tobit Eviews 9) (Regression Tobit Eview 9), is designed...

• Replies: 0
• Views: 5,306
12-11-2015, 12:53 AM
23. ### Eviews 9 Tutorial Two Stage Least Squares

Two-stage least squares (TSLS) is a special case of instrumental variables regression. As the name Suggests, there are two distinct stages in the...

• Replies: 0
• Views: 4,173
12-09-2015, 08:46 PM
24. ### Ordered Logistic Regression - proportional odds

Hey, for a homework paper I have analyze some data. Its about how social networks are related to health. My depended var is an ordinal variable...

• Replies: 0
• Views: 1,739
12-07-2015, 07:42 AM
25. ### Regression analysis with multicollinearity

I am using jmp software for analysis... I am looking at prognostic factors that influence survival of patients with a specific type of cancer. ...

• Replies: 1
• Views: 1,779
12-06-2015, 06:05 PM
26. ### Interpretation of the squared term coefficient in the presence of interaction

Hello dear form members, Please consider the following regression model: y = a + b1x1 + b2x1^2 + b3x2 + b4x1*x2 + e, Note that x1 is (1)...

• Replies: 6
• Views: 1,903
12-06-2015, 11:03 AM
27. ### Rare suppressor effect?

Hey, I recently discovered a somewhat surprising result in a hierarchical regression: I have three predictors (C M N) and one outcome (D). ...

• Replies: 2
• Views: 1,552
12-06-2015, 06:45 AM
28. ### Applying multiple regression results to new data SPSS

My study involves testing infants at multiple time points using a number of behavioural tests. I used a multiple regression to establish which...

• Replies: 3
• Views: 2,231
12-06-2015, 04:17 AM
29. ### Integrating a continuous predictor in multiple logistic regression?

Hi everyone, I was wondering if you could help tell me if this would be possible. I'm doing a health research project were I am using a lot of...

• Replies: 1
• Views: 889
12-06-2015, 03:50 AM
30. ### Estimate a Logistic Regression Model

Hi guys, I want to estimate a logistic regression model's equation based on observed data and get the coefficients to extrapolate further. I have...

• Replies: 6
• Views: 2,737
12-04-2015, 01:18 AM
31. ### Specifying the correct model in Oxmetrics

I have an equation: Y = c + b1X1 + b2X2 + b3X3 Y = Cryptographic ability (scaled 0-200) X1 = Pattern recognition skills (scaled 0-20) X2 =...

• Replies: 0
• Views: 1,002
12-03-2015, 12:43 AM
32. ### statistical robustness analysis in minitab

Hello! I was asked to comment on statistical robustness analysis in minitab, but honestly I don't know much about it. Can anyone help me...

• Replies: 0
• Views: 1,645
11-29-2015, 04:11 PM
33. ### Logit:why aren't my exponentiated coefficients equaling my odds ratio (for nominal x)

I'm running logit in JMP. My understanding is that if you exponentiate the coefficients, you get the change in odds ratios from a 1 unit change in X....

• Replies: 3
• Views: 2,264
11-28-2015, 10:18 PM
34. ### cross-validated AUC

Hello All, I hope the thread's title makes sense to you. I need to perform internal Cross-Validation using k-fold CV (needless to say, to assess how...

• Replies: 10
• Views: 2,446
11-27-2015, 03:32 PM
35. ### [Logistic regression: Stepwise] Why does the model keep a non-significant predictor?

Hello there, I'm running a logistic regression with four independent variables. I use the Stepwise: Backwards LR method for the regression. ...

• Replies: 2
• Views: 1,482
11-27-2015, 03:56 AM
36. ### Comparing AIC between OLS and Quantile regression

Hello all, Is it acceptable to compare the AIC of an OLS linear model to the AIC of a quantile linear model to see which is the better fit? I...

• Replies: 0
• Views: 1,166
11-26-2015, 12:10 PM
37. ### Variable Analysis

I'm new to using regression and was curious how most of you go about creating a tightly fit model. I've always tried to get all my variables under a...

• Replies: 1
• Views: 1,469
11-24-2015, 07:34 AM
38. ### 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: 1,294
11-24-2015, 07:30 AM
39. ### Multiple linear regression using moderators

Hi guys, first post here! First some background information: I am doing a study that examines whether patents and trademarks (2 independent...

• Replies: 0
• Views: 1,533
11-23-2015, 11:40 AM
40. ### Instrumental variable approach to a model with squared and interaction terms

• Replies: 0
• Views: 884
11-22-2015, 04:50 PM
41. ### Degree of Freedom in extra sum of squares

Give the degrees of freedom associated with a)SSR(X_1|X_2) b)SSR(X_2|X_1,X_3) c)SSR(X_1,X_2|X_3,X_4) d)SSR(X_1,X_2,X_3|X_4,X_5)

• Replies: 0
• Views: 1,226
11-21-2015, 12:29 PM
42. ### [Logistic Regression] - Is it possible to compare the outcomes?

Dear all, First time poster here. I'm currently working on my thesis and i'm stuck with a complex matter which i hope you guys can help me with. I...

• Replies: 1
• Views: 1,501
11-21-2015, 02:55 AM
43. ### Implement Young's Information Criterion in Matlab for analyzing recursive arx models

Hey For an assignment we want to implement the YIC instead of Aikake's information criterion because it's more suitable to fit our data. We have...

• Replies: 0
• Views: 1,756
11-20-2015, 04:24 AM
44. ### regression on age groups

Dear All, I have the following question: Estimate a simple regression model of ‘libertarian-authoritarian’ attitude as a function of age groups...

• Replies: 5
• Views: 4,734
11-17-2015, 06:37 PM
45. ### Will Cochrane-Orcutt process remedy heteroskedasticity? Using GRETL

I tried searching for this in the forums but cant seem to find anything. I'm probably just wording it wrong. I'm working on a research project for...

• Replies: 1
• Views: 1,326
11-17-2015, 05:44 AM
46. ### Model to use, fractions as independent and dependent variables

Hi, I have some background on doing regression analysis, however never on fractional variables. My question is related to model selection on...

• Replies: 1
• Views: 1,839
11-14-2015, 04:36 PM
47. ### Which R-Package / function is appropriate? fixed variance, random coefficients and AR

Hi, I have time-dependent data which show an inreasing variance with a certain covariate X (which can be modelled using a fixed cariance...

• Replies: 0
• Views: 972
11-14-2015, 03:20 AM
48. ### Regression with Differential equations (ODEs / PDEs)

Hi, in the field of mathematical modelling of biological or physical processes, most of them cannot be described by simple (linear or nonlinear)...

• Replies: 0
• Views: 1,207
11-12-2015, 07:18 AM
49. ### A coefficient to determine Variance

Hi I am working on a system where temperature stabilises with distance but also increases/ decreases based on month/ hour. Is there a way to...

• Replies: 1
• Views: 2,638
11-09-2015, 12:41 PM
50. ### Increasing variables decreases DFs?

I'm sorry if this is a total noob question, but I cannot figure it out. When I'm adding variables into my regression into STATA, the degrees of...

• Replies: 2
• Views: 1,471
11-08-2015, 09:46 AM
51. ### GEE: best model by comparing residuals (SPSS)

Hello there, I am doing a study on vigilance research by comparing different EEG methods (ERP, FFT and ERD) regarding their predictive power of...

• Replies: 0
• Views: 1,755
11-07-2015, 08:33 AM
52. ### regression analysis for research

hi there, working on a project in which we compare eye contrast among mammals at various points. We collected data (luminance value) for parts...

• Replies: 0
• Views: 1,418
11-06-2015, 08:20 PM
53. ### Can you help me identify the right test for my data?

I’m trying to identify the right statistical method to use. Here’s a case analogous to mine: Let’s say I’m interested in whether basketball team...

• Replies: 0
• Views: 1,337
11-06-2015, 06:19 PM

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