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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Linear correlation

    Hello, In the file (attached) I show two datasets. The first measures willingness of people to buy a house (according to statistical sample), and...

    Started by GIS‎, 01-06-2013 03:48 AM
    • Replies: 0
    • Views: 905
    01-06-2013, 03:48 AM Go to last post
  2. Mediation reporting

    I was wondering if someone could please tell me if I am supposed to report either unstandardized coefficients (b) or the standardized coefficient...

    Started by evenflow‎, 01-05-2013 07:01 PM
    • Replies: 0
    • Views: 1,172
    01-05-2013, 07:01 PM Go to last post
  3. Moderated Mediation when Independent Variable is also the moderator

    I have a question on a special case of moderated mediation... I want to compare some effect sizes of: a "simple moderation model" with a...

    Started by pooyat‎, 01-05-2013 04:12 PM
    • Replies: 2
    • Views: 1,626
    01-05-2013, 04:28 PM Go to last post
  4. Predicted standard deviation with simple linear regression

    Hey, I am working on a prediction of wind speed. I'm using two datasets, one with 10 years of data, one with 1 year. I perform a simple linear...

    Started by jdm_dm‎, 01-05-2013 08:28 AM
    simple linear regression, standard deviation
    • Replies: 0
    • Views: 1,494
    01-05-2013, 08:28 AM Go to last post
  5. Dummy's, significant and not significant

    I have in my model two dummy's, for a categorical variable with 3 categories (native, EU-immigrant and non-EU-immigrant). The reference category is...

    Started by Mathis‎, 01-04-2013 05:56 AM
    • Replies: 1
    • Views: 1,116
    01-05-2013, 07:07 AM Go to last post
  6. Ordered probit model and discret independent variables?

    Hello there If I want to estimate an ordered probit mode,l because my depend varible takes the ordered values 1,2,3 and 4, can I do that if I...

    Started by m.lindebjerg‎, 01-04-2013 05:34 PM
    discrete variable, ordered probit, regression analysis
    • Replies: 2
    • Views: 1,897
    01-05-2013, 01:32 AM Go to last post
  7. simultaneous causality correction?

    Hi Based on a data set I have to answer whether the use of tele-diagnosis and tele-evaluation by health professionals in Andalusia has a positive...

    Started by m.lindebjerg‎, 01-04-2013 01:22 PM
    bias, causality, regression, simultaneous
    • Replies: 2
    • Views: 7,793
    01-04-2013, 04:44 PM Go to last post
  8. MRC, Index as dependent variable

    My question has to do with doing an MRC, using an index at the dependent variable. This is a survey, having 62 questions, all rated on the same...

    Started by dschag‎, 12-18-2012 08:35 PM
    • Replies: 1
    • Views: 1,752
    01-02-2013, 07:21 PM Go to last post
  9. Trouble with GLMs (Using R)!

    Greetings! I've been trying to analyse some data for a while now, and I have found what I think the best model for my GLM is. However, I have friends...

    Started by Haggis‎, 12-30-2012 04:08 PM
    • Replies: 4
    • Views: 1,504
    01-02-2013, 04:52 PM Go to last post
  10. mutliple interactions in same equation

    Hi Folks, I am reviewing a manuscript that uses four interactions in the same equation, and i am wondering if authors need to include higher order...

    Started by Bill M.‎, 01-02-2013 03:53 PM
    interaction terms, multiple interactions
    • Replies: 0
    • Views: 1,048
    01-02-2013, 03:53 PM Go to last post
  11. linear regression Johnson Transformation

    If two predictor variables transformed by the Johnson Transformation (see Minitab or Johnson 1949) are used in separate linear regressions (assuming...

    Started by Brian707‎, 01-02-2013 02:19 AM
    linear regression, model comparison, r squared, transformation
    • Replies: 1
    • Views: 3,361
    01-02-2013, 10:59 AM Go to last post
  12. Angry Need help with interpretation of p-value & t-test

    Hi, I am not really used to handle statistical problems, so i hope for your help. Ive got this text that i need to understand, it's regarding two...

    Started by unistat‎, 11-28-2012 08:03 PM
    • Replies: 2
    • Views: 2,716
    01-02-2013, 08:52 AM Go to last post
  13. Logistic regression

    Hello I just ran a logistic regression on some data I have. The response is binary (0/1) and the independent variable is categorical with 3...

    Started by NN_STAT‎, 12-27-2012 05:45 AM
    • Replies: 4
    • Views: 2,087
    12-30-2012, 07:55 PM Go to last post
  14. Regression tree significances

    Hello I have some rainwater roof runoff data for 69 rain events, plus 4 possible explanatory variables. Individual regressions (linear, power,...

    Started by andyspeak‎, 12-29-2012 11:22 AM
    • Replies: 0
    • Views: 1,875
    12-29-2012, 11:22 AM Go to last post
  15. interpreting parameters in multivariate multiple regression

    Hi all, I have a repeated measures multivariate multiple regression. All measures were sampled three times (hence, Time is the within subject...

    Started by abstoler‎, 12-28-2012 12:27 PM
    • Replies: 0
    • Views: 1,551
    12-28-2012, 12:27 PM Go to last post
  16. 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...

    Started by arindam‎, 12-27-2012 09:26 PM
    dummy variable, regression analysis, sparse data
    • Replies: 0
    • Views: 1,301
    12-27-2012, 09:26 PM Go to last post
  17. Comparing a multiple linear regression model across two groups

    Hi everyone, I've a problem with statistic, which is driving me crazy. I hope someone finds the time to give me a hint or something :) I am...

    Started by omnia‎, 12-26-2012 12:20 PM
    • Replies: 0
    • Views: 2,726
    12-26-2012, 12:20 PM Go to last post
  18. Logs

    Hey, I am running a multiple linear regression twice: first without taking logs for all variables second, by taking logs for both dependent and...

    Started by momo‎, 12-24-2012 11:23 AM
    • Replies: 0
    • Views: 1,240
    12-24-2012, 11:23 AM Go to last post
  19. multiple regression with power law relationship [help!!!]

    I am trying to carry out multiple regression of a dependent variable (DV)with 2 independent variables (IV1 & IV2) that exhibit power law relationship...

    Started by lingdeer‎, 12-23-2012 07:43 PM
    multiple regression, power law, spss, tranformation
    • Replies: 0
    • Views: 3,089
    12-23-2012, 07:43 PM Go to last post
  20. Heteroskedacity and Autocorrelation - residuals vs. fitted values/year

    Dear Talk Stats members, I have justed started using quantitative methods and stata to explain political processes. I analyse a panel dataset and...

    Started by Statato‎, 12-23-2012 11:33 AM
    • Replies: 0
    • Views: 2,303
    12-23-2012, 11:33 AM Go to last post
  21. How to incorporate control variables in SEM?

    Hey guys, I have a very simple model in which 4 institutional dimensions (Reg, Cog, Norm, Cond) are supposed to predict "Rate" and this in turn is...

    Started by fazzmo‎, 12-23-2012 04:53 AM
    • Replies: 0
    • Views: 2,836
    12-23-2012, 04:53 AM Go to last post
  22. Linear Regression modeling on Graphics Cards: Am I missing something?

    :wave: I am trying to understand how to choose a graphics card based on a price to performance value for each card. I have a number of...

    Started by Engineiro‎, 12-22-2012 12:51 PM
    cards, graphics, linear regression
    • Replies: 2
    • Views: 1,781
    12-22-2012, 03:31 PM Go to last post
  23. Panel Data Regression and Normality of Variables / Boxcox Transformation

    Hello, I have started the same thread in "Applied Statistics" but I got no answer so maybe this sections is more appropriate. I'm trying to...

    Started by RAUFURS‎, 12-21-2012 09:41 AM
    • Replies: 0
    • Views: 4,451
    12-21-2012, 09:41 AM Go to last post
  24. Significance level with entire population?

    Hi everyone, I have a short question, and would really appreciate if someone could help me out. I have done multivariate regression analysis...

    Started by lindaxnilsson‎, 12-17-2012 07:37 AM
    • Replies: 3
    • Views: 1,937
    12-20-2012, 10:24 AM Go to last post
  25. Using the same control variable twice... problem? Drawing covariances?

    Hey, I'm trying to test a simple model consisting of three layers IV (Institutional environment) --> MV (Entrepreneurial Activity) --> DV...

    Started by fazzmo‎, 12-20-2012 05:54 AM
    • Replies: 0
    • Views: 1,102
    12-20-2012, 05:54 AM Go to last post
  26. Binary logistic regression. missing values

    Hi. I have a question about missing values. My dependent value is whether the respondend voted in the last election or not - N=2600 cases. I want...

    Started by Dan23‎, 12-19-2012 04:55 AM
    missing values, regresion analysis
    • Replies: 0
    • Views: 1,139
    12-19-2012, 04:55 AM Go to last post
  27. Entering variables: Part or partial correlation

    Hi, The software packages I have seen display and use partial correlation - but not part correlation - to select the iv that will enter the...

    Started by webithet‎, 12-18-2012 11:35 PM
    • Replies: 0
    • Views: 893
    12-18-2012, 11:35 PM Go to last post
  28. Control variables, what to do in practise

    I understand the theoretical use of control variables in regression analysis but when it comes to actually using them in practise i am stumped. Do...

    Started by finken‎, 12-17-2012 05:18 PM
    • Replies: 1
    • Views: 1,386
    12-17-2012, 05:31 PM Go to last post
  29. Ordered probit model (panel) with random effects - stata - regoprob command

    Hi, I am currently working on my masters thesis and am having some trouble. I have tried a variety of specifications and cannot seem to get...

    Started by minerals‎, 12-17-2012 04:26 PM
    • Replies: 0
    • Views: 3,018
    12-17-2012, 04:26 PM Go to last post
  30. Easy but need help

    Hi all! I am doing an experiment involving the age children started wearing glasses and comparing this to the age a parent started wearing glasses....

    Started by cwdaughtry‎, 12-15-2012 03:39 PM
    • Replies: 1
    • Views: 1,372
    12-15-2012, 09:31 PM Go to last post
  31. Question Extremely large Odds Ratios?!

    Hi, I've conducted a binary logistic regression with 1 independent variable (Type of property: flat/maisnette, terraced, semi-detached, detached and...

    Started by ljohnston86‎, 08-22-2011 03:17 PM
    logistic regression, odds ratios
    • Replies: 4
    • Views: 12,033
    12-13-2012, 10:19 AM Go to last post
  32. By which dimension to cluster standard errors in linear regression?

    Hello, This is my first post to this forum. All direct help, as well as references to other sources discussing the subject, are greatly...

    Started by Peksu‎, 12-13-2012 07:18 AM
    clustering, robust standard errors, standard error
    • Replies: 0
    • Views: 2,015
    12-13-2012, 07:18 AM Go to last post
  33. Simultaneous Equations Model - Endogenous/Exogenous Variables

    I'm having doubts about the first question, I think Qt should be exogenous as although other endogenous variables depend on it, Qt doesn't depend on...

    Started by ankc‎, 12-13-2012 12:34 AM
    • Replies: 0
    • Views: 1,891
    12-13-2012, 12:34 AM Go to last post
  34. Questions on Testing for Residuals

    Hi, I'm new on here and I'm sorry if I posted in the wrong section. So I just went over testing of residuals for regression analysis and have a...

    Started by ankc‎, 12-11-2012 11:32 AM
    • Replies: 2
    • Views: 1,373
    12-12-2012, 11:19 AM Go to last post
  35. Still a count variable?

    First off, I hope this is the right forum. I'm not sure which other one would be more appropriate for the question. I have a dependent variable...

    Started by crimsonandclover‎, 12-10-2012 05:15 AM
    • Replies: 6
    • Views: 2,036
    12-11-2012, 07:22 AM Go to last post
  36. White test for heteroskedasticity

    HI, I build a three factor model to explain excess return of a stock. I found low levels of heteroskedasticity through a white test. but I don't...

    Started by sumal‎, 11-18-2012 05:51 PM
    • Replies: 1
    • Views: 2,049
    12-11-2012, 03:44 AM Go to last post
  37. how do i do this final project =(

    1) Sale prices of apartments. The data is saved in the SALES file. A Minneapolis, Minnesota, real estate appraiser used regression analysis to...

    Started by mikem11‎, 12-10-2012 12:05 PM
    • Replies: 4
    • Views: 2,769
    12-10-2012, 04:47 PM Go to last post
  38. Structural Equation Modeling with panel-data - Where to look for the overall effect?

    Hey, I build a simple longitudinal model as can be seen in the following picture between my independent variable "Ease" and my dependent variable...

    Started by fazzmo‎, 12-10-2012 04:15 AM
    • Replies: 0
    • Views: 1,465
    12-10-2012, 04:15 AM Go to last post
  39. test homogeniety of variances with residuals or observations?

    When doing a multiple regression and testing for homoscedasticity some people look at raw observations and others the residuals. Which is correct? ...

    Started by victordaniels‎, 12-08-2012 01:05 PM
    • Replies: 1
    • Views: 1,191
    12-08-2012, 01:15 PM Go to last post
  40. Post What are the criteria for variable selection for Canonical Correlation ?

    If we have respondent level data for Multi domains (eg., Demographic + Loyalty + Behavior + Attitude + Usage), while performing Canonical Correlation...

    Started by Pradeep‎, 11-22-2012 08:11 AM
    • Replies: 1
    • Views: 1,442
    12-06-2012, 04:59 PM Go to last post
  41. Embarrasingly easy question re. Regression analysis/Forecasting/Time Series

    Hi, I have sales data for 2 years, over various product types, like this: Date Product Quantity Sold Total sales invoice Price per unit a a...

    Started by lizzerous‎, 12-05-2012 02:26 PM
    • Replies: 3
    • Views: 1,822
    12-05-2012, 02:38 PM Go to last post
  42. Logistic regression - Hosmer and Lemeshow test with 0 df in Block 1

    Hi everyone! :wave: Context: I want to see how coping strategies (3 categories) affect the anxiety level (binary outcome) of the participants after...

    Started by Mase‎, 12-05-2012 02:05 PM
    • Replies: 0
    • Views: 2,603
    12-05-2012, 02:05 PM Go to last post
  43. Modeling Future Logistic Regression Covariates

    Hello, I have a logistic regression model which implicitly estimates the probability that a business will default in each of 8 future quarters...

    Started by dwienke‎, 12-05-2012 12:06 PM
    • Replies: 0
    • Views: 1,242
    12-05-2012, 12:06 PM Go to last post
  44. Interpreting a time-based multiple linear regression.

    Emails to my teacher have only dodged the question and offered virtually NO explanation on this, so I'm hopeful someone can help me figure this...

    Started by kyle33‎, 12-03-2012 08:54 PM
    • Replies: 2
    • Views: 2,244
    12-05-2012, 08:21 AM Go to last post
  45. Missing terms in Logistic Regression

    I'm running a model that contains three treatments (control, proceduralcontrol, and treatment) and three feeding levels (nofeeding, chum, satiation)....

    Started by craigpoconnell11‎, 12-04-2012 09:01 PM
    • Replies: 0
    • Views: 1,091
    12-04-2012, 09:01 PM Go to last post
  46. glm in R - coding issue

    Dear all, I have been attempting to use a generalized linear model in R to determine if any variation existed between the different feeding...

    Started by craigpoconnell11‎, 12-04-2012 12:11 PM
    • Replies: 2
    • Views: 4,265
    12-04-2012, 02:22 PM Go to last post
  47. Regression- Standard Errors

    I have a general question regarding standard errors with regards to regression analysis, "filling in the blanks" so to speak. What formula would be...

    Started by SaviorMasses‎, 12-04-2012 11:50 AM
    • Replies: 0
    • Views: 1,381
    12-04-2012, 11:50 AM Go to last post
  48. paper replication

    Hi all I am trying to replicate this paper using STATA: HETEROGENEITY BIASES, DISTRIBUTIONALE FFECTS, AND AGGREGATE CONSUMPTION AN EMPIRICAL...

    Started by Rodrigo Badilla Cabrera‎, 12-03-2012 10:22 PM
    • Replies: 2
    • Views: 1,503
    12-04-2012, 06:16 AM Go to last post
  49. Fit Gompertz with vector of dependent variables.

    Hi community, Do any of you know where or how I could fit a to a Gompertz? Usually, we just fit some variable vs time to a Gompertz like number...

    Started by bjbreitling‎, 12-03-2012 03:22 PM
    • Replies: 0
    • Views: 1,677
    12-03-2012, 03:22 PM Go to last post
  50. Question Logistic regression logit or cloglog?

    Hi folks,:wave: currently I'm performing a logistic regression and I'm not sure which link function I should use. I have a binary response...

    Started by breez86‎, 10-04-2012 01:11 PM
    • Replies: 3
    • Views: 18,032
    12-03-2012, 01:37 PM Go to last post
  51. Choosing the best dependent variable (Y)

    Hello, I'm working on a multiple regression model. The dependent variable (Y) is an ordered multinomial qualitative variable. To do regression...

    Started by goldenboy‎, 11-23-2012 05:16 AM
    best dependent variable
    • Replies: 5
    • Views: 3,046
    12-03-2012, 05:03 AM Go to last post
  52. Adding up the coefficients of a contemporaneous and a once-lagged variable

    Hello, I'm stuck on what's probably a trivial problem, but I can't figure out how to go about it as I am a semi-beginner, so I would really...

    Started by econlearner‎, 12-01-2012 07:46 PM
    lagged effects, regression, standard error
    • Replies: 0
    • Views: 1,658
    12-01-2012, 07:46 PM Go to last post
  53. general linear model - missing coefficient in R?

    Hi I am trying to run a nested general linear model. I run the following model: egg volume = Perturbation + Location%in%Perturbation. I have 3...

    Started by gibb‎, 12-01-2012 07:06 PM
    • Replies: 1
    • Views: 2,872
    12-01-2012, 07:13 PM Go to last post
  54. Normalized/Standardized values? Confirmatory Factor Analysis

    Hey, I would like to do a regression analysis in SPSS and collected data for all my variables. However, I have four "latent" independent...

    Started by fazzmo‎, 11-30-2012 01:17 PM
    • Replies: 0
    • Views: 1,486
    11-30-2012, 01:17 PM Go to last post
  55. 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...

    Started by Arno050‎, 11-30-2012 12:20 PM
    • Replies: 2
    • Views: 1,592
    11-30-2012, 12:51 PM Go to last post
  56. Excel and StatPlus to do Multiple Regression

    Hi all--I would be grateful for any help with this! I am doing my statistics research project on whether or not there is a correlation b/w where...

    Started by Belle‎, 11-29-2012 05:26 PM
    • Replies: 4
    • Views: 9,783
    11-30-2012, 12:39 PM Go to last post
  57. Question Urgent Help Required.....

    Dear all, i am doing a research these days. but i am facing a difficulty in statistics analysis. Actually i have measured a quantity "A" in the...

    Started by imtii‎, 11-30-2012 08:59 AM
    • Replies: 10
    • Views: 1,964
    11-30-2012, 09:37 AM Go to last post
  58. multiple regression categorical variable and different slopes

    Hi All, Im trying to run multiple regression with 2 independent variables and one categorical variable (two levels: male vs. female). The...

    Started by mcdomell‎, 11-28-2012 08:50 AM
    separate slopes
    • Replies: 4
    • Views: 2,011
    11-30-2012, 05:13 AM Go to last post
  59. testing interaction between two independent variables

    To test for interaction between two independent variables in a linear multiple regression model (e.g. 'A' and 'B' as independent variables; 'C' as...

    Started by lingdeer‎, 11-29-2012 04:40 PM
    • Replies: 0
    • Views: 3,861
    11-29-2012, 04:40 PM Go to last post
  60. Dummy Coding of Variable and interpretation

    Discussion One of my IV in my regression analysis is religion 1=Catholic 2=Jewish 3=Protestant 4=muslim 5=other 6=none I recoded religion as...

    Started by Dee6619‎, 11-28-2012 04:18 PM
    • Replies: 8
    • Views: 2,735
    11-29-2012, 01:43 AM Go to last post

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