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# Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. ### Weather Prediction

I am looking at past temperature, solar angle, and wind vectors to develop a prediction of the temperature in the next hour. What would be the...

• Replies: 0
• Views: 1,545
06-01-2011, 01:29 PM
2. ### predicting X using multiple regression?

Hello: I have been reviewing a study in which Multiple Linear Regression (MLR) was used to evaluate the relationship between the concentration of...

• Replies: 0
• Views: 2,064
09-11-2009, 04:56 PM
3. ### A question about bimodality.

First question - if my Y variable has a bimodal distribution, is it at all possible to run a regression on this variable? Second - if my Y...

• Replies: 1
• Views: 2,154
03-29-2008, 01:24 PM
4. ### Panel Data: Vary in time but constant for all individuals

Dear all, we are using a standard panel model like Y_it = a_i + b*X_it + e_it. For one additional variable (prices=P) we only have observations...

• Replies: 0
• Views: 1,261
01-30-2013, 07:43 AM
5. ### Spatial Econometrics - Bias?

Dear all, I seem to be lost with the following problem in spatial econometrics: Assume the true model is a spatial error model (SEM). It is...

• Replies: 0
• Views: 2,222
01-03-2014, 06:18 AM
6. ### Autocorrelation Remedy Help

For my bachelor thesis I need to regress historical stock price with earning per share. My data consist of eleven years period with yearly...

• Replies: 1
• Views: 1,935
07-24-2012, 07:30 AM
7. ### A query related to Bayesian Regression

I had a query related to Bayesian Regression and I was wondering if someone had any ideas : So in the proper Bayesian case, we have the following...

• Replies: 0
• Views: 1,689
06-22-2011, 06:42 PM
8. ### Determining weighting factors from linear regression

Hi, I am working on a digital filtering project where I am trying to optimize a filter for a Doppler ultrasound application. Without going in to...

• Replies: 0
• Views: 3,134
03-26-2012, 06:20 PM
9. ### Panel Data Regression with Few Observations

Hello! I know very little of statistics but I need help to do my thesis. I'm running a regression with fixed and random effects in a panel data of 5...

• Replies: 0
• Views: 2,821
04-16-2012, 05:57 PM
10. ### Need help with analysis for my dissertation

Hi, I wonder if someone in this forum offers the service of data analysis (regressions) and accept paypal payment. I need to analyze some variables...

• Replies: 1
• Views: 2,121
08-14-2010, 02:42 AM
11. ### Another question re: correlation and regression

I seem to be getting confused between correlation and regression a bit... I'm trying to identify the relationship between a series of X variables...

• Replies: 3
• Views: 2,483
03-20-2008, 11:38 AM
12. ### One dependent variable contingent upon another

I am running two separate regression analyses where I have the same set of independent variables but in one case the dependent variable (DV1) is a...

• Replies: 1
• Views: 2,090
06-29-2012, 12:50 PM
13. ### Multivariate regression with sparse data for a few independent variables

In my analysis I have several independent variables. My dataset has 2000 records but for a few variables the data is sparse, i.e., information is...

• Replies: 0
• Views: 1,311
12-27-2012, 09:26 PM
14. ### Plz help...LOG transformation of Ratio in Percentage Independent variable

Hi, In my regression I have used a ratio term (in %) as the independent variable. That value ranges from 0.0001% to 99.95%. Can I take the log of...

• Replies: 0
• Views: 1,668
05-30-2014, 05:36 AM
15. ### Regression Help! to predict performance using the output of questionaire

Hi All, Somebody pl. helpe me in the brlow case, As a part of academic project, im intrested in measuring performance of purchase dpeartment in a...

• Replies: 13
• Views: 3,022
02-28-2012, 01:12 AM
16. ### R-Sq Relevance

Hi, I have the following figures after creating a linear regression model using mintab: S = 2.65155 R-Sq = 31.8% R-Sq(adj) = 31.6% PRESS...

• Replies: 3
• Views: 3,123
08-15-2012, 10:53 AM
17. ### what is the highest number of variables to use for regression analysis?

Hi, Just wanted to ask what people thought was the highest number of variables could be used with regression analysis? Also, are there other...

• Replies: 5
• Views: 1,277
09-01-2012, 01:43 PM
18. ### Output of Cox regression in SPSS

Hi! When i ran cox regression model with categorical variables having more than 2 classess what does the first sig. value mean? For ex. ...

• Replies: 0
• Views: 2,976
09-02-2013, 04:55 AM
19. ### LH ratio significant but covariates not?

I have performed Cox regression analysis using Forward LR method. As a results two covariates are included in the final model. First one has two...

• Replies: 5
• Views: 1,772
09-06-2013, 10:06 AM
20. ### positive loglikelihood?

It seems to be no issue to have positive log likelihood in linear regression. How should I however interpret two positive LLs? In normal situation...

• Replies: 1
• Views: 2,414
10-11-2014, 10:07 AM
21. ### Fixed term is “(Intercept)” --Dredge function

Hi, i'm currently running a glm model in R and have attempted to use the following code: Model:...

• Replies: 2
• Views: 6,098
02-05-2015, 11:08 PM
22. ### Logistic regression and significance of continuous variables across 3 periods

I'm currently working on a logistic regression analysis in R with a binary response variable (0 = non-used; 1 = used location). I am modeling...

• Replies: 3
• Views: 1,654
05-12-2015, 12:22 PM
23. ### 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: 1,059
12-16-2015, 06:55 AM
24. ### Running multple, multiple regressions? which statistical test should i use?

I have done a study on whether personality and demographics predict interaction on facebook brand pages. I have used a Big five personality scale...

• Replies: 5
• Views: 2,336
11-22-2014, 08:18 AM
25. ### statement regarding estimators for econometrics

statement: when an estimator is unbiased and efficient, does it mean parameters can be estimated accurately? my opinion: no there is need of more...

• Replies: 2
• Views: 1,601
11-30-2012, 12:51 PM
26. ### Multiple variable regression(BUT only one coefficient to be estimated)

Dear, For our master thesis we need to regress the equation Pt-P(t-1)= S/2*(Qt-Q(t-1))+Beta*S/2*(Qt-1)+et or http://prntscr.com/6q81o8 It...

• Replies: 0
• Views: 1,177
04-06-2015, 06:11 AM
27. ### Question about Regression and relationship testing

Hello, I am working on a project that is trying to look a possible correlation between BMI and various outcomes in a patient group. So the BMI...

• Replies: 5
• Views: 2,424
02-03-2012, 01:04 PM
28. ### Moderated regression - how to create the graph for some (not all) variables.

I've run into a problem and I was hoping someone could help me out. My research question is whether beliefs about controllability of weight...

• Replies: 0
• Views: 1,172
08-12-2014, 05:13 AM
29. ### regression analysis reporting: chemist needs help!

Hello, everyone. We have some regression data we'd like to report, but aren't sure how to best do so. Here's the situation: A lab analyst runs a...

• Replies: 0
• Views: 2,670
02-15-2015, 10:28 AM
30. ### Variance of a corrected regression coefficient

Ppl I really need help! Please, help me solve it: Consider the model Yi = b0 + b 1Xi +ei e_i~N(0,s^2_e) iid X_i_N(m_x,s^2_x) iid Z_i = X_i +...

• Replies: 1
• Views: 1,547
06-05-2012, 05:20 PM
31. ### Generating correlated predictors data and dependent data in r

Dear all, I need correlated both predictors data and dependent data in r. My problem is given as follows. We adopt a p=4 parameter model and...

• Replies: 2
• Views: 1,661
02-14-2013, 01:04 PM
32. ### Principal component analysis problem

Hi, My question is about Principal component analysis(PCA). Suppose we have five variables X1,X2,X3,X4 and X5 (all are correlated). We find five PCA...

• Replies: 1
• Views: 1,521
02-25-2013, 02:49 PM
33. ### Multiple linear regression

Dear all, My question is, Why we use W, LR and LM tests instead of F tests to develop the preliminary test estimatior in a multiple linear...

• Replies: 1
• Views: 1,091
05-21-2013, 02:40 PM
34. ### Crossing point

Dear all, My question is How to find out the crossing point of two curve in a graph by using r software? Mr.S.Sivarajah

• Replies: 2
• Views: 3,329
08-21-2013, 09:11 AM
35. ### Comparison of regression coefficients between (nested) geographic regions

Hi All, I would like to compare the effect of an explanatory variable (say X1) on a response variable (Say Y) between two geographic regions in...

• Replies: 0
• Views: 1,441
04-11-2016, 08:54 PM
36. ### Linear model accounting for fixed effects vs. ordered probit

I originally ran an ordered probit model on an ordinal dependent variable (values 1-12), however in order to account for fixed effects in my analysis...

• Replies: 3
• Views: 3,813
02-05-2012, 01:44 PM
37. ### Is it ok to have coefficients in exponents?

Hi all, Pardon me for being so naive, but is it ok to have coefficient in exponents figure. actually I ran a regression model in stata by xtreg...

• Replies: 12
• Views: 2,243
08-28-2013, 03:54 PM
38. ### which regression analysis model shall i use?

i am conducting a research on 9 insurance companies from which a 5 year data is collected. Thus, i have to use panel model, but which model fixed...

• Replies: 0
• Views: 1,405
03-21-2012, 04:55 AM
39. ### 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: 1,473
12-06-2015, 06:45 AM
40. ### Regression analysis of more than two independent and dependent variables

Hello, I want to find the relationship between independent and dependent variables using regression analysis. There are 5 IV and 4 DV. Please...

• Replies: 8
• Views: 5,432
05-14-2012, 09:50 AM
41. ### Multiple Regression analysis

Hello Everyone, Can anyone please tell me, how one can compute the total score of dependent variables in order to do regression analysis?? ...

• Replies: 8
• Views: 1,923
05-16-2013, 02:31 AM
42. ### Defining relation of a fold over design

Dear All, I am reading the book DC Montgomery on my own. The book says that the defining relation for a foldover design will have L + U - 1 words...

• Replies: 0
• Views: 1,154
10-18-2016, 01:50 PM
43. ### Segmenting a Logistic Regression Model

Hi All, I am trying to build a Logistic Regression model . In my model i have 4 different variables( with 3 levels each) on which i am trying to...

• Replies: 0
• Views: 1,494
02-15-2013, 06:32 PM
44. ### 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: 1,167
11-21-2015, 12:29 PM
45. ### Poisson regression for count data

I need to fit a model to study the severity of a bicycle accident based on other explanatory variables. The data description is X1: is the use of...

• Replies: 1
• Views: 1,922
07-10-2016, 10:21 AM
46. ### How to study association between categorical variables?

I have 4 categorical variables in a dataset let X1, X2, X3 and Y. Where X1,X2 and Y is a binary random variable and X3 have 3 categories. X1,X2...

• Replies: 6
• Views: 1,243
07-10-2016, 07:00 PM
47. ### Deviance residuals in model fitted via MCMC

I fitted a regression model in a Bayesian approach via MCMC. The JAGS code for the model is model{ for(i in 1:n) { y ~ dbeta(alpha, beta) alpha...

• Replies: 0
• Views: 739
05-26-2017, 09:39 PM
48. ### Problem with Data analysis on Likert Scale!

Hello John, Im a student of Business studies and am working on a research project titled as "Impact of Physical environment on Employee...

• Replies: 10
• Views: 16,180
07-09-2016, 03:44 AM
49. ### How to avoid collinearity in regression

Hi there, I am new in statistics so my question will be a bit naive. When I perform regression, some variables are excluded. It is, maybe, because...

• Replies: 9
• Views: 5,546
09-09-2012, 06:57 AM
50. ### Regression Analysis Based on Condition

Hi there, I am trying to do a regression analysis. My columns looks like this: AA 1 GG 2 AG 2 If the column 2 contains "2" so...

• Replies: 4
• Views: 2,331
09-02-2012, 11:59 PM
51. ### Error contribution from covariance in linear regression

Hello, I try to consider the covariance in the error analysis of a linear regression with few data points. I could not find for this a worked...

• Replies: 8
• Views: 3,060
08-02-2012, 08:07 AM
52. ### 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: 1,917
02-23-2017, 08:26 PM
53. ### Categorical variable as dependent variable

I have a categorical variable which is like: "How much do you like the sun?" 1 not at all 2 not a great deal 3 neither/nor 4 quite a lot 5...

• Replies: 6
• Views: 1,981
04-12-2013, 11:28 AM
54. ### Probit/Logit independent variables

Hello, My DV is a binary variable (Yes/No) and I am using a logit/probit regression analysis. As for my independent variables,there are three...

• Replies: 4
• Views: 1,587
04-23-2013, 11:29 PM

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