1. Announcement:
05-10-2017
Views:
1,964
Page 46 of 73 First ... 27 28 29 30 31 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 ... Last
Threads 2701 to 2760 of 4341

# Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. ### Derivation of Distribution of Sum of Matrices in Quadratic Form

I'm having a bit of trouble starting this question. Is it right for me to assume that the sum of the Ai matrices (A1 + A2 + ... up to k) is an...

• Replies: 3
• Views: 1,638
09-16-2012, 12:34 AM
2. ### Sample size multiple linear regression

Hi, Would anybody know of a method or a respectable online calculator for calculating the sample size for a multiple linear regression (being...

• Replies: 1
• Views: 1,688
09-15-2012, 11:30 PM
3. ### Quasipoisson rregression interpretation

Hi, I am trying to do a quasipoisson regression to know if the frequency of drinking of my subject is related to temperature. The problem is that...

• Replies: 1
• Views: 1,916
09-15-2012, 06:12 PM
4. ### Next step in logistic model...any thoughts?

Hello! I would really appreciate your input on this if you have a minute! I’m looking at 3 different characteristics of 'prestige', and how these...

• Replies: 0
• Views: 860
09-15-2012, 10:54 AM
5. ### Help with nth Leverage

Deduce that the nth leverage lies between zero and one Heres my working out. (But part of it is from lectures.) I dont understand why the...

• Replies: 1
• Views: 1,433
09-15-2012, 02:20 AM
6. ### Logistic regression (with countries & years)

Hi all, I am trying to use logistic regression on a sample of 20,000+ firms across 50+ countries over several years to researching why firms...

• Replies: 0
• Views: 982
09-13-2012, 08:38 PM
7. ### Logistic regresssion and economic significance

Hi guys, Currently I am doing a research about elimination of etfs. Now I have to run a logistic regression using stata. However, I read...

• Replies: 0
• Views: 2,249
09-13-2012, 12:55 PM
8. ### Multiple regression, predictors normally distributed?

Hi, I have a basic question, in multiple regression do the predictors variables have to be normally distributed or is it just the residuals...

• Replies: 1
• Views: 1,254
09-13-2012, 08:49 AM
9. ### number of hours worked squared

Hello, My dependent variable is logged annual income. One of my independent variables is experience squared (the number of hours worked per...

• Replies: 4
• Views: 1,516
09-13-2012, 01:08 AM
10. ### Logistic regression problems with zero variance data

Hello, I am working with binary data. My research question was whether different types of learning experiences would impact whether or not a child...

• Replies: 0
• Views: 1,636
09-12-2012, 06:58 PM
11. ### binary logistics for suicide ideation and attempt

Hi, I am doing analysis for relatively large sample of high school students (4000) of predicting lifetime usage of psychoactive substances as...

• Replies: 6
• Views: 1,872
09-12-2012, 05:38 PM
12. ### Choosing a statistical analysis - is a GAM appropriate for this data?

Hello, I am a master’s student and working on writing my prospectus. As such, my advisor is rather picky and I am trying to make sure I have at...

• Replies: 0
• Views: 2,207
09-12-2012, 02:32 PM
13. ### 4-way nested Anova?

A student of mine carried out some research before we thought about how we were going to analyze it, and we're a bit lost. We are trying to...

• Replies: 0
• Views: 1,473
09-12-2012, 09:42 AM
14. ### Multivariate linear regression, using multiple DVs in GLM>Multivariate

Hi there, first of all thank you kindly for having such a knowledgeable brains trust :) Basically I'm facing a conundrum when it comes to how to...

• Replies: 0
• Views: 2,377
09-11-2012, 11:16 PM
15. ### How affects Multicollinearity to likelihood function in logistic regression

Hello, I'm trying to select the best covariates in a logistic regression model by a forward stepwise method based on conditional likelihood ratio...

• Replies: 0
• Views: 1,376
09-11-2012, 11:51 AM
16. ### To Classify Or Not -- Does it make sense to use income brackets?

At my job we're doing an analysis of energy usage for low income households as part of our subsidy program. Some 90,000 households are in this...

• Replies: 13
• Views: 3,243
09-11-2012, 10:10 AM
17. ### Autocorrelation in nonlinear models

Good morning! I'm running a random effects logit (xtlogit with stata) and cannot find how to test for autocorrelation. Has anyone an idea? Things...

• Replies: 0
• Views: 1,531
09-11-2012, 02:12 AM
18. ### Degrees of freedom for a moving average?

Can someone please help me to determine the correct number of degrees of freedom used when calculating a moving average? For example, with annual...

• Replies: 0
• Views: 5,652
Joz
09-11-2012, 12:36 AM
19. ### arima multiple periods

Dear All, I have t-shirt sales data from week 14 to 40 weeks for 2011 and 2012, thus I have 50 data weeks(2012 is not completed yet). I defined my...

• Replies: 2
• Views: 1,745
09-10-2012, 03:53 AM
20. ### Help with low Durbin Watson value

I have a large table of time series data. I am trying to build a regression model and all assumptions are satisfied except independent errors. The DW...

• Replies: 1
• Views: 7,079
09-09-2012, 03:52 PM
21. ### Suppressor variable in multiple regression

Hi everyone! I am currently testing a model in organizational behavior where I have several behaviors (B1, B2, B3) that impact positively an...

• Replies: 0
• Views: 1,986
09-09-2012, 11:14 AM
22. ### 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: 5,579
09-09-2012, 06:57 AM
23. ### Multiple regression, why use categories

Hello, I have a question regarding multiple regression. I am reading a paper in which the author performed a multiple regression to predict...

• Replies: 7
• Views: 2,371
09-08-2012, 05:47 AM
24. ### SAS proc reg/spec - Why are binary predictors flagged for singular matrix?

Hello all - I am building a simple linear regression model (OLS) with both continuous and binary independent variables paired with a continuous...

• Replies: 0
• Views: 2,861
09-07-2012, 07:50 PM
25. ### Hosmer Lemeshow test - degrees of freedom

Hello, I have to use HL test for logistic regression purposes. In the most of sources there is written, that number of degrees of freedom is n-2...

• Replies: 0
• Views: 2,305
09-07-2012, 05:20 AM
26. ### Test for and remedy of multicollinearity in logistic regression with categorical IVs

I was searching over net how can I test the presence of multicollinearity and what is its remedy in case the IVs are categorical in a logistic...

• Replies: 2
• Views: 4,562
09-07-2012, 03:22 AM
27. ### Warning on Regression

Hi, I'm trying to run logistic regression analysis but on the output it showed warning: "There is not enough memory for this run. Memory is used...

• Replies: 11
• Views: 2,397
09-06-2012, 04:06 PM
28. ### Least significant variable regression

Hello, Could somebody tell me what is the least significant variable in this regression analysis? What do you look for? Many thanks

• Replies: 3
• Views: 2,781
09-06-2012, 02:54 PM
29. ### Comparing relative importance within a subsample.

Hey everyone, I was wondering if there was a statistical technique that allowed you to compare the differences in effect sizes across two...

• Replies: 0
• Views: 984
09-06-2012, 01:52 PM
30. ### Logistic Regression with binomial dependent variable & binomial independent variable

Hi all, I have a binary dependent variable (presence/absence) and a binary independent variable (also presence/absence) as well as two continuous...

• Replies: 3
• Views: 2,812
09-06-2012, 11:00 AM
31. ### Multicollinearity and the 'backward' regression method

Hello, I have a question about multicollinearity and multiple regression. If you were to use the 'backward' selection method of regression...

• Replies: 0
• Views: 2,455
09-06-2012, 09:04 AM
32. ### Are my residuals normal?

Hi there, I have performed a multiple regression analysis and am checking the assumptions. The normal probability plot is not exactly a straight...

• Replies: 9
• Views: 2,222
09-05-2012, 06:17 PM
33. ### Predicting non linear value

Hello, sorry to cross post, but I initially posted this in the wrong forum. Im trying to build a model to project the number of customer reviews...

• Replies: 0
• Views: 890
09-05-2012, 10:53 AM
34. ### Seeking to hire somebody to perform a regression on data

Hi, I'm am looking to hire somebody to perform a multiple linear regression and produce a short report. I can pay 50 dollars. Would anybody...

• Replies: 0
• Views: 949
09-05-2012, 09:29 AM
35. ### Choosing a model

Hi all, Probably a silly question, but I'm confused about what form of multiple regression to perform (stepwise, hierarchical, etc). If I perform...

• Replies: 1
• Views: 1,246
09-04-2012, 01:32 PM
36. ### How do I interpret this regression table with dummies?

Hey, let´s say I am running a regression with 3 factors. Also I have a dummy variable which takes the value 1 if a bank has a low capital ratio...

• Replies: 0
• Views: 2,776
09-04-2012, 02:06 AM
37. ### Linear regression - when errors are correlated and from different f distributions

Hi all, This question relates to research assessing the hearing of new born babies. As mentioned in the title, I wished to solve the univariate...

• Replies: 0
• Views: 1,056
09-04-2012, 01:35 AM
38. ### moderated hierarchical regression

Hello, I urgently need help. I have to test a hypothesis regarding moderating role. I know the procedure how to do it in SPSS with moderated...

• Replies: 0
• Views: 3,164
09-03-2012, 02:51 PM
39. ### Arima dummy regression arimax

Dear All, Below is t-shirt sales data for 2011 and 2012 from week 14 to 40. DummyDad is father's day, dummyceleb is the celebration week that...

• Replies: 0
• Views: 2,161
09-03-2012, 11:58 AM
40. ### Logistic Regression or Chi Square?

Hi everyone, I am a stats noob and am currently doing my fourth year thesis, examining moral development in children and adolescents. My design so...

• Replies: 4
• Views: 12,351
09-03-2012, 08:34 AM
41. ### 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: 2,349
09-02-2012, 11:59 PM
42. ### lme4 Fixed Effect Model Code: Does this make sense?

Hi folks, I posted in an earlier message about the modeling I'm doing for my thesis, in which I'm looking at how three factors(biocontrol...

• Replies: 1
• Views: 1,761
09-02-2012, 05:38 PM
43. ### 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: 1,286
09-01-2012, 01:43 PM
44. ### Appropriateness of fixed effect model for temporal/ spatial effects (Ecology)

Hello, I hope you can help me with this. I'm in the throes of finishing my masters thesis, and am stumbling on my model. I've talked a lot with...

• Replies: 5
• Views: 2,444
09-01-2012, 10:54 AM
45. ### WLS in application

Dear stats experts I am aware that the following questions are maybe trivial but I never really got it. Consider I have data of one subject...

• Replies: 1
• Views: 1,336
09-01-2012, 02:18 AM
46. ### Sufficient variability

Hello. I would really appreciate some help conceptualizing a problem that I seem to be having with some data that I've been working with. I was told...

• Replies: 1
• Views: 2,734
08-31-2012, 06:41 PM
47. ### Ordered Logistic Regression Model

I am using SPSS to run ordered logit model on my categorical data but each time i end up receiving warnings like "the number of cells with zero...

• Replies: 2
• Views: 1,961
08-31-2012, 04:26 PM
48. ### How to use Logistic Regression to get info for Sobel test?

Hello, Is it possible to use logistic regression to get info for Sobel test, the same way as using linear regression? If so, what are the variables...

• Replies: 0
• Views: 1,362
08-31-2012, 11:07 AM
49. ### Output of an AR process.

Hello, I modelize returns serie with an AR model using GRETL. Here are the outputs (red and right : the original data; blue and left: the...

• Replies: 1
• Views: 7,562
08-31-2012, 04:52 AM
50. ### How to use a regression analyis to cross calibrate two sensors

I have two temperature sensors that I need to calibrate to each other, and I'm thinking a regression analysis is the best way to go about this. But...

• Replies: 0
• Views: 1,746
08-31-2012, 04:05 AM
51. ### P-value for Polynomial Linear Regression and Testing for R^2 Significance Changes

I am doing some trend estimation in Excel on some daily revenue data and I have fitted a polynomial regression line using the trend estimation tool....

• Replies: 0
• Views: 2,573
08-30-2012, 03:13 PM
52. ### could not find the command for "logistic regression" under analyze in SPSS19

I have been tryibg to do a logistic regression in SPSS 19. But somehow I could not find the option/command in the "regressions" section under...

• Replies: 0
• Views: 961
08-29-2012, 10:26 PM
53. ### Help on count dependent variable

Hello! I am new to this forum. I am bombarded by a lot of info on count DVs. Here are my variables: a. DV= firm-year observations. 7 years, 101...

• Replies: 0
• Views: 963
08-29-2012, 09:44 PM
54. ### Applying estimated model coefficients to subunit level

Hi, I have a question about whether it is okay to apply regression coefficients to predict scores at the nested subunit level. I have a natural...

• Replies: 0
• Views: 1,521
08-29-2012, 09:41 PM
55. ### What to report in a mediation analysis

Hello Given my comprehensive lack of statistical knowledge, I have gained a lot of information over the last five months browsing this forum. But...

• Replies: 2
• Views: 25,947
08-28-2012, 07:10 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.