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# Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. ### WLS Confidence interval

Guys can anyone assist? I've googled and read lots on the matter of WLS (mainly lecture notes from asorted university courses google finds)....

• Replies: 3
• Views: 2,685
06-24-2015, 02:09 AM
2. ### Willingness To Pay is out of ranges of bids asked in survey

Hello, I'm trying to estimate the willingness to pay (WTP) for whale watching by using a probit model (the results are similiar with a logit). But...

• Replies: 2
• Views: 2,155
08-27-2012, 10:26 PM
3. ### Weighty issue...

Hi I have a conceptual issue with some data I am analysing. I am looking at the point prevalence of a particular disease as reported in medical...

• Replies: 0
• Views: 2,378
11-19-2010, 04:59 AM
4. ### Comparing coefficients for nested logistic regressions

Hi, maybe one out there can help. I am interested in comparing the coefficients of two binary logistic models. In one nested in the other one,...

• Replies: 9
• Views: 4,432
11-24-2010, 08:45 AM
5. ### Nested data structure

Hi, I wonder whether the community can help. The goal is to run a series of regressions with correctly estimated standard errors. Note that the...

• Replies: 0
• Views: 1,445
dnh
05-13-2015, 05:59 AM
6. ### Level-2 in growth models

Dear all, Perhaps someone could help me with a more detailed explanation why time is specified as a level-2 variable in the growth models...

• Replies: 0
• Views: 566
dnh
08-19-2016, 05:25 AM
7. ### Regression on a non-normal dependant variable

Hi there, This situation is new to me: I have non-normal DV, for which no proper non-linear transformation (that I know of) exists. It is a score...

• Replies: 2
• Views: 3,698
05-24-2011, 12:33 PM
8. ### Negative Binomial Regression in R

Hi all, I am fairly new to the R world. I need some help with correct syntax for running a negative binomial regression/zero-inflation negative...

• Replies: 0
• Views: 1,936
06-13-2014, 01:16 PM
9. ### Stepwise Regression

Let Y = Company Sales X1 = Overall Industry Sales X2 = Advertising Expenditure X3 = Special Promotion by Competitor (0 = Yes, 1 = No) Using...

• Replies: 2
• Views: 5,877
04-26-2010, 02:30 PM
10. ### Categorical dependent variables / ANOVA

Hi all! Newbie here. In my current work role, I'm thought of as an expert on stats. This is totally untrue - but it doesn't take much to be seen...

• Replies: 14
• Views: 2,912
03-10-2014, 09:27 AM
11. ### Binary logistic regression with extremely biased response variable

Hi, for a study to be published as a paper, I have collected data in which my binary response variable Y is highly biased towards Y=0 (it's Y=0...

• Replies: 0
• Views: 1,933
05-19-2012, 03:56 AM
12. ### Zero-inflated continuous independent variables

Are there ways of handling zero-inflated continuous independent variables?

• Replies: 4
• Views: 6,042
11-01-2012, 10:44 AM
13. ### Std Error of nonlinear regression coefficients

Hi There, I have a commercial NET dll computing nonlinear regression coefficients and their sigma values. However, I would like to compute the...

• Replies: 0
• Views: 3,622
03-10-2011, 08:11 PM
14. ### Calculating confidence bands for nonlinear regression

Hi, I am trying to find a way to calculate the 95% confidence bands for nonlinear regression. I have found the following text on the web, but I do...

• Replies: 0
• Views: 2,808
05-05-2011, 11:53 AM
15. ### zero value of the regression parameter

Hello. I would like to ask if anyone knows a website with the theme: regression testing parameter. I need only theory on the topic (to school). Just...

• Replies: 5
• Views: 1,320
04-25-2016, 09:33 PM
16. ### Regression and imputing zeros

Hi all! I have what is likely a simple regression problem. I am imputing Variable X from survey Y to survey Z. I am using a simple linear...

• Replies: 2
• Views: 2,083
09-24-2015, 02:16 PM
17. ### Combining several regression

Sorry for this simple, maybe idiotically so, question :) I'm trying to make a very basic model for basketball, though the sport doesn't really...

• Replies: 1
• Views: 1,407
10-14-2013, 11:24 AM
18. ### Low R-squared, but my variables fit expectations

So I ran a regression on 3 different sets of data estimation techniques versus actual survey data. The dependent variable was the non-survey...

• Replies: 1
• Views: 13,669
09-16-2010, 10:55 AM
19. ### [Help -please!] Multiple Regression Model

all done now

• Replies: 1
• Views: 2,856
06-05-2010, 04:55 PM
20. ### HLM - non-linear IV and placement of individual characteristics in the model

Hi all! I am working on my dissertation and run across a couple of questions when structuring HLM model. The data looks as follows: I conducted an...

• Replies: 0
• Views: 389
06-22-2017, 05:04 PM
21. ### Interaction term

Hi, I'm running linear regressions (1) Y = a + b and (2) Y = a + b + axb The coefficients for a and b in (1) have positive signs which are...

• Replies: 3
• Views: 3,009
dou
05-23-2011, 04:49 AM
22. ### Large coefficient problem

Hello, i'm running linear regressions for a large cross country panel data: the simplified term is similar to y = a + b + axb. When I run...

• Replies: 3
• Views: 3,032
05-23-2011, 05:20 AM
23. ### Is it normal to have negative constants?

I was wondering whether we must include an intercept term in our equation? Also I have negative (some) significant constants. I know it means that...

• Replies: 2
• Views: 3,903
05-25-2011, 12:20 AM
24. ### Changes in the level of Significance

I use standard errors for significance. Basically there is no problem with the significance, the problem is how to interprete the results. The...

• Replies: 2
• Views: 2,521
dou
09-02-2011, 04:45 AM
25. ### Interaction effects regression wiith dummy variables

Hello everyone, I am doing an analysis about the export diversification effect during the financial crisis. I have my dependent variable as log...

• Replies: 5
• Views: 329
08-25-2017, 09:19 AM
26. ### Find expected value and variance of ARMA(1,1) model

My apologies if this isn't the correct subforum to ask this question. Here's the model: y_{t}=50+ 0.8y_{t-1} + a_{t} - 0.2a_{t-1} How do I...

• Replies: 3
• Views: 13,211
04-27-2011, 02:11 AM
27. ### Stationarity of Seasonal Box-Jenkins Model

We've been working on group projects where we were given a set a of seasonal data, and from it create a Box-Jenkins model. In class, we were that...

• Replies: 0
• Views: 2,241
05-03-2011, 02:50 AM
28. ### Basic multiple regression question

Sorry, should've probably specified linear regression. I was given a data and ran a proc corr on it in sas. As you can see, x1 through x5...

• Replies: 7
• Views: 2,300
11-25-2011, 05:22 AM
29. ### scale issues

Please look at the following descriptive labels for a scale of importance. Extremely critical (7) Highly important (6) Very Important (5) ...

• Replies: 4
• Views: 2,615
10-19-2009, 08:11 AM
30. ### How are F-Values, R-Square and Adjusted R-Square calculated in Regression?

How are F-Values, R-Square and Adjusted R-Square calculated in Regression Analysis?

• Replies: 0
• Views: 2,164
06-02-2012, 10:55 PM
31. ### Multicollinearity of categorical variables in linear regression

Running a linear regression which includes mostly continuous variables as predictors, but one categorical predictor (which I have dummy coded as...

• Replies: 0
• Views: 2,411
05-30-2014, 01:10 PM
32. ### Using mixed-effects models

Hello, I have been asking a series of questions within this forum and have had wonderful advice given. However as my statistics knowledge is...

• Replies: 2
• Views: 1,857
12-30-2011, 04:44 PM
33. ### I think I may finally understand, but a few questions

Please note that you will find a simplified question below in case you do not have the time to check all of my scripts in the first two posts, but...

• Replies: 6
• Views: 2,029
03-21-2012, 12:28 PM
34. ### p-value of anova when comparing models

I am asking a new question, however the dataset is related to other questions that I have posted. I am running lmer to determine which factors have...

• Replies: 0
• Views: 1,868
03-24-2012, 09:59 AM
35. ### using a binary response for a mixed model

Hello, My journey through mixed models (which is documented in past questions) has been an arduous one, however I appreciate being introduced to...

• Replies: 0
• Views: 1,518
03-25-2012, 01:01 PM
36. ### a question about estimates in mixed models

Hello, I was hoping to be able to find all of the estimates of covariates and of the categories with a number of factors. I found a similar study...

• Replies: 0
• Views: 1,297
03-28-2012, 12:55 AM
37. ### Linear Regression for Traffic Data

Hi there, I have a two full years of traffic data by month and I am trying to predict traffic for the next two years based on historical growth...

• Replies: 3
• Views: 4,788
10-13-2010, 11:25 AM

Hi there, First of all please excuse my lack of knowledge of the subject I have just started a course in Econometrics and find using the...

• Replies: 3
• Views: 2,669
05-16-2011, 12:07 PM
39. ### I(1)?deterministic trend? you could probably answer this!

Hey all I am using the Augmented Dickey-Fuller test on EViews7 to test for stationarity in two series; ln(employment) and the ln(wage rate). Both...

• Replies: 0
• Views: 2,563
06-04-2011, 05:33 AM
40. ### Multiple Linear Regression: How to Calculate the Coefficient

This post has been deleted.

• Replies: 3
• Views: 16,234
02-08-2010, 12:03 PM
41. ### How to Calculate the Coefficient of Multiple Regression

Hi Statistic Gurus I'm not really familar with multiple linear regression, and despite countless hours on google, I havn't found any clear...

• Replies: 2
• Views: 10,446
02-24-2010, 07:24 AM
42. ### Pos. or Neg. Correlation with Error Term?

in IV regression, how can I tell if an endogenous variable (Pi) is positively or negatively correlated with the error term? The only information I...

• Replies: 0
• Views: 1,971
11-28-2012, 09:34 PM
43. ### warning - may require help

Hello all you stats, and indeed non-stats, fowk I'm reasonably au fait with my stats methods. However, I don't have access to SPSS, which is my...

• Replies: 1
• Views: 1,769
08-01-2011, 03:48 AM
44. ### Lmer Output/: variable re-levelling

Morning/Evening all I'm having a bit of a time getting the LME4 package to list ALL of my IVs, rather than all-1. By way of example, here is my...

• Replies: 7
• Views: 6,146
09-06-2011, 06:56 AM
45. ### Multiple logistic regression intercept

Hello guys and gals, I'm having a me***own trying to understand exactly what the intercept of a multiple logistic regression is telling me/ or if...

• Replies: 3
• Views: 3,363
03-13-2012, 12:29 AM
46. ### Regression: GLM vs. Lmer question

Hi group, I've typically conducted my regressions, both linear and logistic, using the lmer function from lme4. However, having read around a bit...

• Replies: 3
• Views: 2,871
12-04-2013, 01:46 PM
47. ### Do I need to control for Type 1 errors?

Hi guys, the situation I have is, a reviewer has asked me to reduce my mediation model (MPLUS) as he says I have too many tests going on. In fairness...

• Replies: 5
• Views: 2,278
01-14-2015, 03:09 PM
48. ### GLM repeated measurements with very large database

I am trying to perform a multivariate regression analysis in SPSS. The problem is the database is very large (one variable contains over 200.000...

• Replies: 0
• Views: 2,905
01-27-2011, 08:42 AM
49. ### Regression for CAPM.. Finance

I am testing CAPM (a financial model) using regression. Would It be correct to say that 'c' (the constant) is equal to the alpha? Thanks

• Replies: 2
• Views: 5,231
12-26-2010, 07:24 PM
50. ### Hot to analyze data at various levels (company and employee)?

I have a data set with data at two different levels. I want to analyze the perceptions of employees of a specific management practice. The data...

• Replies: 1
• Views: 2,239
02-25-2015, 12:45 PM
51. ### P-value for a regression where expected slope is 1:1

Hi, I am comparing two values for vegetation cover from two time periods. The expected value is y=x for the slope. I am curious how to calculate a...

• Replies: 6
• Views: 2,989
11-26-2016, 09:40 AM

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