1. Announcement:
05-10-2017
Views:
1,862
Page 51 of 73 First ... 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 ... Last
Threads 3001 to 3060 of 4336

# Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. ### Incremental poisson/logistic regression

Is anyone aware of any work on incremental poisson or logistic regression, i.e. where training data arrives one sample at a time, the samples are not...

• Replies: 0
• Views: 1,341
04-30-2012, 03:14 PM
2. ### Creating an indicator variable of a single observation

Hello, Could somebody explain the rational for creating a dummy variable for a single observation in a regression analysis. Why would you do it? ...

• Replies: 0
• Views: 1,905
04-29-2012, 06:26 AM
3. ### Binary logistic regression to analyze Likert Scale questionnaire

Hi, I am sort of stuck with the following problem concerning logistic regression analysis in my research on the determinants of technology...

• Replies: 0
• Views: 3,994
04-28-2012, 12:24 PM
4. ### Blinder-Oaxaca Decomposition for a Multivariate Linear Regression

Hello Everyone, I am working on a thesis that uses a multivariate linear regression to evaluate the racial wealth gap between four groups: whites,...

• Replies: 1
• Views: 5,321
04-28-2012, 11:36 AM
5. ### F-Test Interpretation and Log-Linear?

Hey. I have found this a very difficult subject to self-teach and unfortunately I have not found my teachers particularly helpful. Sorry about the...

• Replies: 9
• Views: 4,269
Jak
04-27-2012, 01:40 PM
6. ### Dummy variable question in regression

Hello, I'm trying to understand dummy variables in regression. I'm regressing the price of diamonds against (1) weight (2) Clarity and (3)...

• Replies: 2
• Views: 2,094
04-26-2012, 11:26 AM
7. ### OLS regression versus Binary regression

Hello, I am currently working on my master thesis and I have a question regarding the use of two types of regressions. First, I will explain the...

• Replies: 1
• Views: 2,007
04-26-2012, 05:29 AM

Hello! Before I start the whole story, I am going to sumamrize my main question beforehand so the story will hopefully make more sense. Mainly,...

• Replies: 0
• Views: 1,960
04-25-2012, 02:01 PM
9. ### Weight Matrix in Generalised Linear Models

Hi, I was wondering if I am trying to do IRLS for GLZ. Is there a way to compute the weight matrix directly for the data I have? I think its...

• Replies: 0
• Views: 1,073
04-25-2012, 09:31 AM
10. ### multiple linear regression

hey guys, i want to ask if anyone has came across any statistical test that have attemted to rank independent variables in their other of...

• Replies: 0
• Views: 1,438
04-24-2012, 10:08 AM
11. ### Really stuck with moderated regression...

I have used a hierarchical regression analysis in SPSS, however the analysis isn't producing any significant interactions :confused: The...

• Replies: 4
• Views: 2,373
04-24-2012, 09:29 AM
12. ### T-test for 2 slopes

Is there a t-test that I can use to show that my two slopes are on different planes, or that they are different? ...

• Replies: 0
• Views: 2,698
04-23-2012, 03:25 PM
13. ### Appropriate null hypothesis for a two-stage regression

Hi – thanks everyone for your help in advance. I’m working on a two-stage regression, in which a coefficient from the first regression is used as an...

• Replies: 0
• Views: 1,404
04-23-2012, 08:25 AM
14. ### Homogeneity of regression slopes

If assumption of homogeneity of regression slopes broken in ANCOVA analysis, what to do? Can I use linear regression instead? Thanks

• Replies: 3
• Views: 5,899
04-23-2012, 04:55 AM
15. ### Simple minitab result interpretation ?

I've lost most of my lecture notes and am having trouble recalling the formulae for various results, it would be appreciated if you could please help...

• Replies: 0
• Views: 1,790
04-21-2012, 03:43 PM
16. ### Systematic way of finding all linear relations between given set of variables?

Hello! I'm a newcomer to statistics and data analysis and I'm currently facing a problem which I don't know how to solve. I have a dataset with...

• Replies: 0
• Views: 1,537
04-21-2012, 04:04 AM
17. ### Help with "nominal" variables and dummy coding

Hi. First of all, I'm sorry for not writing 100% correct as this is not my everyday language :) My quetion I'm working with linear...

• Replies: 3
• Views: 2,856
04-21-2012, 03:07 AM
18. ### Help me choose a regression model?

Hi everyone, I have the following problem in mind: Suppose m items are displayed to a user and the user can buy any one of them. Each of the items...

• Replies: 2
• Views: 1,770
04-20-2012, 08:17 PM
19. ### Seemingly Unrelated Regression vs Maximum Likelihood ~ best for constraints?

I am currently doing research and I am utilizing an almost ideal demand system. It is essentially a regression equation that seeks to model consumer...

• Replies: 0
• Views: 1,628
04-20-2012, 03:10 AM
20. ### Help! my model isn't predicting any yes outcomes and don't know why

I am producing a logistical regression analysis to find a model to predict whether someone has minor mental health problems or not. I'm almost...

• Replies: 9
• Views: 2,036
04-20-2012, 02:57 AM
21. ### Combining regression with time series

Using an existing time series of supermarket sales data I need to make a forecast. Basically a simple exponential smoothing model explains future...

• Replies: 2
• Views: 5,592
04-19-2012, 05:59 AM
22. ### Testing a learning curve

Hi all, Suppose someone kicks a football at a goal. However, I want to test to see whether or not practice improves technique - whether there is a...

• Replies: 0
• Views: 1,676
04-18-2012, 04:25 AM
23. ### Log Transform and Nonpositive Values

I know that some researchers, when taking the log of a variable with some nonpositive values (like wealth), simply replace the nonpositive values...

• Replies: 0
• Views: 1,529
04-17-2012, 01:40 PM
24. ### How to test significance of the mean of multiple OLS regressions (Jensen's Alpha).

Hi. Im working on a paper on mutual fund performance, using Jensen's Alpha to measure performance. Ri-Rf=a+b(Rm-rf)+ei Time series regression,...

• Replies: 1
• Views: 4,199
04-17-2012, 06:23 AM
25. ### Regressing survey data with independent variables and external data as dependent

I have an SPSS file with longitudinal data, stretching back 18 months or so (monthly survey with around n=1000), so the survey month is one of the...

• Replies: 0
• Views: 1,822
04-16-2012, 09:18 PM
26. ### 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: 2,812
04-16-2012, 05:57 PM
27. ### Panel data regression time fixed & firm fixed

Hi all, After desparately searching the web and the library I hope one of you will be able to help me with my spss (no 19) problem. My data set...

• Replies: 0
• Views: 1,882
04-15-2012, 02:29 AM
28. ### When Logistic Regression Coefficient Increases

Hi All, I am trying to understand the relationship between naturalization (whether someone becomes a naturalized citizen or not), using data from...

• Replies: 1
• Views: 2,175
04-12-2012, 02:17 PM
29. ### Logistic regression significant interaction with categorical predictor

Hello everyone, I am doing a binary logistic regression and a have some questions about presenting my data. Depedent variable: Extensive rot...

• Replies: 0
• Views: 1,637
04-11-2012, 05:10 PM
30. ### disputing a fixed effects model assumption

Hi guys, I'm in the middle of responding to a reviewer's claim on fixed effects models and wanted to reach out to see if any of you had any...

• Replies: 0
• Views: 1,438
04-11-2012, 12:29 PM
31. ### multiple timeseries in regression ?

Hi, has anyone ever done multiple time series in a regression model.. So for example if I have 3 different regions (Prov) each with 10 sub-regions...

• Replies: 0
• Views: 2,091
04-11-2012, 09:30 AM
32. ### Pooled OLS

I've got a question concerning a regression analysis which I'm about to perform. The dataset contains pupils from six different years in a...

• Replies: 0
• Views: 3,670
04-11-2012, 03:49 AM
33. ### How to do a industry comparison?

Hello everyone, I am really new to statistical analysis and Stata so I might have a question which could sound too dumb, but I still hope that...

• Replies: 1
• Views: 1,626
04-10-2012, 04:44 PM

Hi All, I am running regression on panel data with 6 time periods and around 160 countries. I have been trying different combinations, but get...

• Replies: 1
• Views: 1,905
04-09-2012, 07:43 AM
35. ### LinReg Assumption on errors ConfIV

Hi all why is it assumed that the errors e_i are normal distributed in linear regression, see e.g. Seber. What would be the influence e.g. on...

• Replies: 4
• Views: 2,487
04-09-2012, 05:17 AM
36. ### Multilevel model of school data

Hi, I have a model I am working with to estimate 6 grade test scores from a sample of students who were in a school district from K-6. I am using...

• Replies: 4
• Views: 1,763
04-06-2012, 07:17 PM
37. ### Single Negative Beta in Multiple Linear Regression

Hi everyone I'm having trouble interpreting a single negative regression coefficient in a multiple linear regression. The situation is as follows:...

• Replies: 1
• Views: 6,280
04-05-2012, 03:57 AM
38. ### Ordered Logit - Probabilities and quadratic term

Hi everyone, I'm running into a problem interpreting a quadratic (curvilinear) relationship using an ordered logit model. the d.v. is self...

• Replies: 0
• Views: 3,894
04-04-2012, 04:03 PM
39. ### Logistic regression convergence issues

Hi Folks! I'm using logistic regression for classifying records into groups. The issue with logistic regression is that if any cell in the...

• Replies: 8
• Views: 6,811
04-04-2012, 01:12 PM
40. ### Moderation in Logistic Regression

Hi, looking at all the other topics, this is a very basic question, but for me it is really a brain cracker.. I have a conceptual model; ...

• Replies: 9
• Views: 24,602
04-04-2012, 05:36 AM
41. ### Problems with within subjects regression and dummy variables

I'm hoping someone will be able to help me with this. I'm trying to replicate some analysis that was done in a published paper to see if I get the...

• Replies: 0
• Views: 2,370
04-04-2012, 03:27 AM
42. ### Help with mixed models (spss, time-invariant main predictor, not a growth model)

I have practically no experience with longitudinal data, and really need your help. I am looking at a sample of firms in a certain industry, and...

• Replies: 0
• Views: 2,412
04-03-2012, 06:25 AM
43. ### Is this data acceptable for a multiple regression?

Hi all, I have data from a community with MIN size (g) MAX size (g) MAX size without neighbours (g), Height (cm) and Area (cm^2). I have this for...

• Replies: 3
• Views: 2,137
04-02-2012, 01:58 PM
44. ### Assistance on Analysing Likert scale data

Hi all, I'm looking for some advice on data analysis. I can't see the wood for the trees now at this stage. I'm doing a study of the effect of...

• Replies: 0
• Views: 1,742
04-02-2012, 10:00 AM
45. ### Mallows Cp selection

I am using the best subsets method in Minitab to select the best parameters for a multiple regression, but I'm a bit confused on Mallows Cp. Some...

• Replies: 3
• Views: 16,685
04-01-2012, 02:13 PM
46. ### simulating bias in fixed-effect dummy regressions

Earlier today I was typing up a reply to this thread (LINK), but since I don't have a lot of experience with so-called fixed-effects dummy regression...

• Replies: 0
• Views: 3,223
03-31-2012, 08:30 PM
47. ### Principal component analysis before regression anallysis

Hi this is my first post and i've searched for this answer in vain. I have 50 participants in an experiment i conducted and i want to use a...

• Replies: 3
• Views: 2,983
03-31-2012, 10:22 AM
48. ### Greatest impact prediction

Hi, please i have one Question. If i have this results (Stepwise method) Can i say: 1) Better for predict Y is model 4 2) Regression...

• Replies: 1
• Views: 1,330
03-31-2012, 12:39 AM
49. ### Poisson data pairwise comparisons valid?

Hi everyone, I'm a bit confused if what I am doing is valid. I thought I would get your two cents worth. I have done a poisson linear...

• Replies: 3
• Views: 2,860
03-30-2012, 02:46 PM
50. ### Linear regression vs ancova - when to use which

Hi all, I have some data on species richness, latitude and temperature. In the past on this sort of data I have used multi-linear regression. But it...

• Replies: 1
• Views: 3,571
03-29-2012, 07:11 PM
51. ### Derivation of the lack of fit sum of suares

Hi, Can anyone show me step by step how to derive the lack of fit sum of squares, I would be very thankful, I'm so lost in this. Thank you.

• Replies: 1
• Views: 2,079
03-29-2012, 12:05 PM
52. ### (Beginner!) Questions about regression on CD album sales/internet use/digital music s

Hello, I am attempting to perform a regression on what has caused the reduction in CD album sales, and need a little assistance. I have 28 data...

• Replies: 1
• Views: 1,961
03-29-2012, 09:34 AM
53. ### Comparing curves fitted to two quadratic regressions

Hello, I have constructed two calibration curves, i.e. plotting known concentrations against response. Both of these sets of data seem to fit a...

• Replies: 2
• Views: 4,175
03-28-2012, 07:30 PM

Use this control to limit the display of threads to those newer than the specified time frame.

Allows you to choose the data by which the thread list will be sorted.

Note: when sorting by date, 'descending order' will show the newest results first.