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# Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. ### What is a "count" in regression

It is often said that you should use Poisson regression with data that involves counts. But it seems to me that most of data in the social science is...

• Replies: 9
• Views: 2,496
08-11-2014, 08:51 PM
2. ### Standard Error of Estimate

I am reading a book called Applied Statistics with Excel by G. Keller. On p593 he wrote Standard Error of Estimate=(SSE/n-k-1)^2, and SSE = sum...

• Replies: 7
• Views: 1,976
08-10-2014, 08:42 AM
3. ### Consequences of wrongly applying dummy variables?

I was just wondering if there were any consequences to applying dummy variables to independent variables which don't need it. For example, let's...

• Replies: 0
• Views: 1,192
08-10-2014, 06:58 AM
4. ### Moderation Analysis through Process by Andrew Hayes and SPSS regression analysis

Hello all, I need help analyzing some data for a moderation analysis. I have a continuous variable (predictor), Exhaustion, a continuous outcome,...

• Replies: 0
• Views: 3,205
08-09-2014, 10:22 PM
5. ### Multiple Linear Regression: Coeffiecients are all insignificant - Can someone help?

Hi together, I carried out a multiple linear Regression (OLS) and the results show me that all my explanatory variables (business model...

• Replies: 1
• Views: 1,155
08-09-2014, 11:18 AM
6. ### How to estimate quasi-elasticities from marginal effects of logistic regression?

HI everyone, I am new to this forum. I need some help regarding logistic regression analysis. I am using logistic regression for my research. I...

• Replies: 0
• Views: 1,265
08-09-2014, 07:11 AM
7. ### cooks distance cutoff

Hello, I urgently need to find out what is happening in regards to below: I am doing a huge number of simple linear regressions. For each...

• Replies: 9
• Views: 10,378
08-08-2014, 10:18 PM
8. ### Reasons for high lambda in ridge regression?

I've seen a few papers where they use k-fold cross-validation (k=10) to find the optimal lambda. They end up with huge amounts such as 4000. This is...

• Replies: 0
• Views: 1,607
08-08-2014, 01:23 PM
9. ### Interpretation of restricted cubic splines' coefficients

Hi all, I was wondering whether there is a "not-very-obscure" interpretation of the coefficients (in a regression analysis, like logistic...

• Replies: 0
• Views: 2,656
08-08-2014, 04:05 AM
10. ### Comparing regression slopes measured two times withinsubjets?

Although I am not a statistics-newbee, I have no clue how to contrast the following situation against null-hypothesis, i.e. I don't know how to do...

• Replies: 3
• Views: 1,235
08-08-2014, 12:33 AM
11. ### Logistic regression p-value significance

Dear all, I have done logistic regression for 20 independent variables for which all of them are categorical (0 and 1) also 1 binomial response...

• Replies: 3
• Views: 1,510
08-07-2014, 02:17 PM
12. ### Question about standardizing in ridge regression

Hey guys I found one or two papers which use ridge regression (for basketball data). I was always told to standardize my variables if I ran a ridge...

• Replies: 0
• Views: 1,211
08-07-2014, 05:13 AM
13. ### Constant negative fitted values...am I missing something?

Hello all, I'm attempting to fit a model where y variable is a variety of \$/ha/year figures (all positive) ranging between 0.01 and 2520. The...

• Replies: 2
• Views: 1,364
08-05-2014, 04:34 AM
14. ### Testing multiple interaction variables in logistic regression

Hi everyone, For a study that I'm currently conducting I want to know the effect of some of my variables on other variables, which I think should...

• Replies: 6
• Views: 2,279
08-04-2014, 07:11 PM
15. ### Appropriate model for (repeated) data

I have some cross-sectional data, where I'm interested in estimating a relationship between the "number of items in use" in sector i of country j and...

• Replies: 0
• Views: 1,463
08-01-2014, 07:58 PM
16. ### Interaction between time and time-varying between-subjects variable

I'm struggling with how to think about a question that seems like it should be really straightforward. I have some survey data about regrets...

• Replies: 6
• Views: 1,536
08-01-2014, 05:35 PM
17. ### Correlation between two non stationary time series

Hey everyone, I'm trying to figure out if there is significant correlation between two non stationary time series (e.g. temperature on a a given...

• Replies: 9
• Views: 3,940
08-01-2014, 02:03 PM
18. ### Insignificant coefficients. Fixed effects model.

Dear all, I have a panel data, and I estimate a regression using fixed-effects model (i.e. I use 'xtreg' command in Stata). The regression is as...

• Replies: 0
• Views: 1,807
Man
08-01-2014, 01:20 PM
19. ### Bayesian GLM with missing data

Just while I'm on a roll with simple questions... I'm using MCMCregress {MCMCpack} to do a Bayesian regression in R. My dataset has a good chunk...

• Replies: 3
• Views: 1,979
07-31-2014, 09:23 PM
20. ### Clarifying collinearity

I am trying to run a regression model where the Y is concentration and predictors are stove type (e.g., stove1, stove 2, stove 3) and fuel type...

• Replies: 3
• Views: 1,211
07-31-2014, 09:46 AM
21. ### bootstrap validation

how can we do bootstrap validation in sas?

• Replies: 0
• Views: 976
07-31-2014, 08:14 AM
22. ### Do i need to correct for family wise error when doing moderation and mediation?

Hi, I've been analyzing data for moderating and mediating relationships and am wondering how necessary it is to correct for family wise error in...

• Replies: 0
• Views: 857
07-30-2014, 09:19 PM
23. ### Multivariate repeated measures, binary and continuous

Hello all. I am working with a data set of multivariate repeated measurements. Specifically, subjects performed an exercise they were taught up to...

• Replies: 3
• Views: 1,778
07-30-2014, 07:01 PM
24. ### Bizarre multicollinearity (inferred from VIF) in regression

I'm really confused about why I have such high VIFs in a multiple regression I've run. My predictors are country (2 different countries, so -1 and...

• Replies: 2
• Views: 1,182
07-30-2014, 04:00 PM
25. ### Interpreting the regression RMSE when responses are measurements with known SD

Hi all, I'm fitting a simple regression model (Y = a + bX) where my responses are measurements whose standard deviations, SD, are available....

• Replies: 8
• Views: 4,277
07-29-2014, 07:11 PM
26. ### Logistic regression: trouble finding out which variables are significant

Hi, I'm using logistic regression to analyse a dataset on managerial decision making. Managers have made decisions to fire 2 employees out of a...

• Replies: 7
• Views: 1,512
07-29-2014, 06:12 PM
27. ### How to integrate an interaction term into a fixed effect model?

Hi, I have a balanced panel data set for t=2. I want to estimate a fixed effects model in the following way: Y= β(0) + β(1)*x + β(2)*z +...

• Replies: 0
• Views: 1,260
07-29-2014, 06:21 AM
28. ### Question about homoscedasticity (for a probably non-linear relation)

I predict that independent variable X, has an U-shaped relation with dependent variable Y. I test this assumption using a regression analysis...

• Replies: 1
• Views: 2,656
07-28-2014, 11:04 AM
29. ### weight of evidence

If WOE>0, what does it imply?

• Replies: 0
• Views: 955
07-28-2014, 08:11 AM
30. ### "Averaging" linear trends = linear regression slopes ?

Hello everyone, I was not able to find a solution for the following question, explaining it with a simple example: We have N=12 weather boxes...

• Replies: 1
• Views: 1,142
07-27-2014, 05:18 PM
31. ### correlation of trends?

Hi, I have extracted trends from two time series (one correspond to some climate parameters, the other one to chemical composition of tree...

• Replies: 1
• Views: 3,173
07-27-2014, 04:11 PM
32. ### Finding correlation of independent variables with a response variable in R

I have a set of independent variables X1, X2, X3,..., Xn and a response variable Y. I want to perform some form of data analysis in R so that I only...

• Replies: 3
• Views: 2,025
07-27-2014, 06:23 AM
33. ### Extend economics thesis with multivariate analysis

Dear all, Working on my Master Thesis I got the remark from my supervisor that I have to extend the research with a multivariate analysis. I have...

• Replies: 3
• Views: 2,029
07-27-2014, 05:11 AM
34. ### choosing β0 and β1 to minimize the residual sum of squares

I'm reading a book called , and I have a question in regards to the material inside. I understand that we can find the residual sum of squares by...

• Replies: 0
• Views: 2,938
07-26-2014, 11:53 PM
35. ### Partial Least Square Regression_Interpretation of Result_VIP_Model Equation_urgentpls

Hello! I would like to ask your help about the interpretation of my results. So I am doing an analysis about which among the environmental predictors...

• Replies: 6
• Views: 1,809
07-26-2014, 11:53 AM
36. ### Change score as the DV with change scores as IVs - Category mistake?

I have a theory that needs to be tested. The idea is that an IV "change in the knowledge of", and an IV "change in the sense of importance" of...

• Replies: 0
• Views: 1,272
07-26-2014, 01:35 AM
37. ### Looking for a good beginners guide to Regression Analysis using Excel

I am looking for a good beginners guide to Regression Analysis using Excel. Any recommendations? Thanks!

• Replies: 2
• Views: 2,051
07-25-2014, 01:33 PM
38. ### Multiple Regression while variables kept constant

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• Replies: 6
• Views: 1,920
07-23-2014, 03:02 PM
39. ### Dummy Variable Interactions

Hi all, At the moment I'm working on an analysis of wage inequality and have come across a considerable stumbling block. I am trying to compare...

• Replies: 2
• Views: 1,294
07-23-2014, 01:39 PM
40. ### Best regression model when I am just using dummy variables as independent variables

Dear all I am just wondering where to find help for my question. Hopefully this is the right place with many smart people. I am currently...

• Replies: 1
• Views: 912
07-23-2014, 07:56 AM
41. ### R squared and Standard Error

Hi, Can standard error be 94.10 when R squared is 0.67 in a linear model? Thanks.

• Replies: 7
• Views: 1,713
07-22-2014, 02:31 PM
42. ### ATE - teffects vs xtlogit

Hi. I am measuring the average treatment effect on two groups, using STATA´s teffects regression adjustment estimator. The STATA output reports...

• Replies: 0
• Views: 2,020
07-22-2014, 06:15 AM
43. ### Scaling independent variable in regression

I have a long data set collected over time on two variables and have done linear and polynomial regression on it with good results. I want to...

• Replies: 1
• Views: 1,136
07-20-2014, 06:12 PM
44. ### How to model my variables into a probit

Hey guys, Got a tricky issue here... I am trying to estimate a probit model. The binary dependent variable is employment status and the...

• Replies: 0
• Views: 1,269
07-20-2014, 02:38 PM
45. ### Test of Significance - Confidence Interval

Hi All, I need some help from any kind soul who is able to shed some light on my query: I have a 95% confidence interval for a mediation effect...

• Replies: 0
• Views: 1,488
07-20-2014, 04:34 AM
46. ### Odds ratio of 1 for bivariate logistic regression

My wonderous memory is that an odds ratio near 1 is not remotely substantively important, much like a zero slope would be in OLS. But I have a highly...

• Replies: 14
• Views: 7,116
07-19-2014, 02:51 PM
47. ### Logistic Regression - Interpretation issue - Odds Ratios near 1

Hello, I have some several doubts about the logistic regression. I am working with stata in the logisitc regression and my binary input variables...

• Replies: 0
• Views: 922
07-19-2014, 10:55 AM
48. ### Repeated measure nested within individuals?

Hi, All, (I'm a beginner so my question could be really dumb...) So, I have a set of data that contains 30 schools' variable A and variable B....

• Replies: 1
• Views: 1,265
07-17-2014, 12:46 PM
49. ### Regression of calories consumed and body weight

So I want to understand whether the relationship between calories consumed and body weight differs between males and females. I have data from 20...

• Replies: 2
• Views: 905
07-17-2014, 10:30 AM
50. ### Logistic regression significant test

Dear all, I have done logistic regression for 20 independent variables for which all of them are categorical (0 and 1) also 1 binomial response...

• Replies: 4
• Views: 1,271
07-16-2014, 04:50 PM
51. ### Test for absolute value of coefficient

After running a simple linear regression I estimate a coefficient beta. I want to test the null that the absolute value of beta is less than or...

• Replies: 0
• Views: 1,151
07-16-2014, 03:06 PM
52. ### What kind of regression should I use?

I have next problem. I want to investigate the relation between life stages (string variable) and organizational ambidexterity (numeric variable),...

• Replies: 0
• Views: 949
07-16-2014, 10:19 AM

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