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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. help with stats

    can someone help explain what this means

    Started by mdnelson‎, 06-26-2015 11:27 AM
    • Replies: 3
    • Views: 839
    06-26-2015, 12:44 PM Go to last post
  2. Error term in log-level models?

    I am running a decomposition of log wages for two time periods and want to explain the variance of the error term. My question is: If there is a...

    Started by David@talkstats‎, 06-26-2015 11:18 AM
    anova, heteroskedasticity, log transformation, regression
    • Replies: 0
    • Views: 456
    06-26-2015, 11:18 AM Go to last post
  3. Chi-quare and logistic regression with three level independent variable

    Dear Friends, I am currently working on my master's Dissertation and have some problems in finding out how I should do my chi-square-test and...

    Started by Ricarda_Rau‎, 06-26-2015 07:24 AM
    chi suqrare, control condition, online experiment
    • Replies: 2
    • Views: 706
    06-26-2015, 08:56 AM Go to last post
  4. Repeated measure regression

    I have always heard that ANOVA and linear Regression are essentially the same method and that what one would do the other would as well. I am familar...

    Started by noetsi‎, 06-25-2015 02:33 PM
    • Replies: 0
    • Views: 667
    06-25-2015, 02:33 PM Go to last post
  5. Interactions in logistic regression - Please help

    Hi everyone, Currently I'm writing my thesis on the effects of divorce on children. It's a complex design so I guess I'll be posting more...

    Started by Charlotte_‎, 06-25-2015 03:08 AM
    dichotomous iv, interaction effects, logistic regression, multicollinearity
    • Replies: 2
    • Views: 793
    06-25-2015, 07:50 AM Go to last post
  6. What is the proper name for such kind of regression models - 2-stage or 2-step?

    Dear community experts, I've faced an interesting situation, which is out of my area of expertise, so I need an advice here from someone more...

    Started by DikAlex777‎, 06-24-2015 10:26 AM
    instrumental variables, logit, two-step estimation
    • Replies: 7
    • Views: 894
    06-24-2015, 04:21 PM Go to last post
  7. Regression analysis(?) for multiple independent variables

    Hello all, Apologies for posting an elementary query, but my stats is very rusty. Not looking for an explicit solution, necessarily, just a...

    Started by Heywood‎, 06-14-2015 06:53 PM
    estimation, multiple regression, prediction
    • Replies: 2
    • Views: 968
    06-24-2015, 11:59 AM Go to last post
  8. Regression analysis on grouped data

    What type of regression model do I use, if I have one dependent variable and five independent variables, but each observation was gathered in groups?...

    Started by kelvarnsen‎, 06-24-2015 10:38 AM
    • Replies: 0
    • Views: 549
    06-24-2015, 10:38 AM Go to last post
  9. Question 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)....

    Started by dj_johnphillips‎, 06-23-2015 10:31 AM
    • Replies: 3
    • Views: 1,366
    06-24-2015, 02:09 AM Go to last post
  10. Power analysis for Cox regression...a twist?

    Hello, I am planning prospective trial using secondary data. My sample size is 480. I am using an artificial grouping based on an experimental...

    Started by mirt2013‎, 06-23-2015 09:27 PM
    cox regression and power
    • Replies: 0
    • Views: 646
    06-23-2015, 09:27 PM Go to last post
  11. Reverse engineering investment performance correlations to apply to a new investment

    Hello, I've been given some data for the relationship between investor characteristics and investment performance: KPI | Standard coefficient...

    Started by mr e guest‎, 06-23-2015 06:51 AM
    • Replies: 0
    • Views: 556
    06-23-2015, 06:51 AM Go to last post
  12. help with non-normality issue!

    Thread has already been solved.

    Started by Conni20‎, 06-23-2015 06:13 AM
    • Replies: 3
    • Views: 656
    06-23-2015, 06:37 AM Go to last post
  13. Lightbulb The probability of being born a male baby?

    Thank you! :)

    Started by nmpeony‎, 06-21-2015 10:33 PM
    probability, regression
    • Replies: 2
    • Views: 848
    06-22-2015, 08:17 AM Go to last post
  14. Logit regression, marginal effects

    Hi all, I ran a logit regression on the success (1 succesful, 0, unsuccessful) of a Kickstarter Project. I have some difficulties with...

    Started by Piet Voerman‎, 06-21-2015 09:27 AM
    • Replies: 0
    • Views: 643
    06-21-2015, 09:27 AM Go to last post
  15. Negative Binomial Regression Coefficient Interpretation

    Hello, the results of my negative binomial regression show me a .03 coefficient. Does it mean when I increase my IV by one unit the DV increases...

    Started by Wald‎, 06-16-2015 05:45 AM
    • Replies: 3
    • Views: 1,121
    06-17-2015, 05:54 AM Go to last post
  16. Mixed model for empty cell design

    Hi everybody, I would like to do a mixed effects regression that is like this: ISI ~ Location + Stage + Stage*Location + 1|Patient/Chan ...

    Started by matthieugold‎, 06-15-2015 03:30 PM
    mixed model, unbalanced data
    • Replies: 0
    • Views: 773
    06-15-2015, 03:30 PM Go to last post
  17. hausman test

    Dear community, I analyse purchase decisions on different products j over a duration of t days. I would like to include random or fixed effects. When...

    Started by peter1985‎, 06-12-2015 12:35 PM
    • Replies: 1
    • Views: 927
    06-14-2015, 10:12 AM Go to last post
  18. ex post regression analysis

    So I have 500 different store locations 125 locations are from w brand 200 are from xbrand 100 are from y brand 75 are from z brand each...

    Started by statshelp101‎, 06-14-2015 06:16 AM
    regression analysis
    • Replies: 0
    • Views: 551
    06-14-2015, 06:16 AM Go to last post
  19. minimum adequate model dropped variables

    Once ive found my final minimum adequate model, what other options could i use to ensure that all of the variables dropped during the...

    Started by lydiasharp‎, 06-14-2015 06:05 AM
    • Replies: 0
    • Views: 882
    06-14-2015, 06:05 AM Go to last post
  20. Interaction significant but simple slopes not significant?

    I have run a forum search and an internet search, and tried posting this question on other forums, but have been unable to find an answer to my...

    Started by B B Jinx‎, 06-10-2015 06:01 AM
    interaction, moderation, simple slopes
    • Replies: 2
    • Views: 2,848
    06-10-2015, 09:32 AM Go to last post
  21. Do I need to refer goodness of fit indices when I am only interested in estimates?

    Hello all, I am intersted in the relationship b/w 3 variables (A,B, and C). Then I constructed a path model as A->B->C. My only interest is how big...

    Started by MartenH‎, 06-04-2015 01:44 PM
    • Replies: 8
    • Views: 1,422
    06-09-2015, 11:38 AM Go to last post
  22. Panel model with FE minimum number of observations per group

    Hello dear forum members, I am estimating a panel model with fixed effects using yearly data from 2009 to 2013 (N=1848). Whereas 80% of the data...

    Started by kiton‎, 06-07-2015 03:06 PM
    • Replies: 3
    • Views: 1,036
    06-08-2015, 12:53 PM Go to last post
  23. Question Null hypothesis at the 5% level of significance

    H0: β1 = β2 = β3 = 0 H1: At least one of the equalities does not hold If I have gotten the answer 5.518 from the formula F k, n- (k +1) = (RSS/...

    Started by Viv0202‎, 06-07-2015 01:47 PM
    • Replies: 1
    • Views: 1,103
    06-07-2015, 02:42 PM Go to last post
  24. Help

    Hi Everyone, Is a sample of 20 companies too small for a dividend payout study? in SPSS I get a negative Adjusted R sq you will find attached...

    Started by c_b_s90‎, 05-22-2015 08:14 PM
    • Replies: 1
    • Views: 791
    06-07-2015, 01:51 PM Go to last post
  25. Nonsignificant mediation analysis

    Hello there, first post in this forum. I hope this is the correct subforum, as I have a question regarding psychology statistics, but I am using a...

    Started by nevial‎, 06-07-2015 05:34 AM
    • Replies: 10
    • Views: 1,174
    06-07-2015, 01:28 PM Go to last post
  26. What to do with non-stationary and not cointegrated panel data?

    Hi, I've been trying to conduct a panel data analysis. I have 3 variables, all of them stationary at I(1). Then I employed both Westerlund and...

    Started by nunu‎, 06-07-2015 05:42 AM
    cointegration, non-stationarity, panel data
    • Replies: 0
    • Views: 982
    06-07-2015, 05:42 AM Go to last post
  27. Exclamation GLM diagnostic plots in r

    I am trying to fit a Gamma glm in R. getting very weird diagnostics even though all variables are significant. Please advise as to how i can improve...

    Started by doy_h(r)‎, 06-04-2015 02:56 PM
    • Replies: 3
    • Views: 1,599
    06-05-2015, 07:49 AM Go to last post
  28. Residual plots (against y vs y hat)

    I'm reading up on residual analysis and am trying to apply to some data using multiple regression. The residual plot (std res vs the regression...

    Started by Value Ninja‎, 06-02-2015 05:33 PM
    • Replies: 3
    • Views: 3,126
    06-05-2015, 02:39 AM Go to last post
  29. Replication in linear regression. General Estimating Equations (GEE) a good option?

    or is it the only option? I've been collecting hosts in 3 different habitats, about 20 hosts every sampling trip. I've been recording prevalence...

    Started by Saccharo‎, 06-03-2015 03:02 PM
    general estimating, linear regression, replications
    • Replies: 3
    • Views: 896
    06-04-2015, 01:03 PM Go to last post
  30. Ordered Probit Model

    I am using the ordered probit model in my regression, and I have some questions. 1. What are the basic assumptions? 2. which tests should be run?...

    Started by Ellinor Hjelvik‎, 06-03-2015 07:29 PM
    • Replies: 0
    • Views: 807
    06-03-2015, 07:29 PM Go to last post
  31. Interpretation of Cross validation (in Logistic Regression) results

    Hello! I am faced again with Logistic Regression, and in particular binary LR, in a study that I am faced with trying to assess the impact of some...

    Started by gianmarco‎, 06-03-2015 01:53 AM
    • Replies: 0
    • Views: 1,347
    06-03-2015, 01:53 AM Go to last post
  32. Comparing coefficients in Logistic Regression

    Hello ! I would like to have guidance on what follows. I was fitting a Logistic Regression model, and I got the coefficients for the model's...

    Started by gianmarco‎, 07-29-2014 07:08 AM
    • Replies: 14
    • Views: 6,112
    06-02-2015, 09:08 AM Go to last post
  33. Getting VIF from R

    Hello! I was wondering how to get the VIF value for predictors in R (namely, in the context of Logistic Regression). I have read that there is a...

    Started by gianmarco‎, 06-02-2015 08:25 AM
    • Replies: 1
    • Views: 1,122
    06-02-2015, 08:38 AM Go to last post
  34. Find the Most Important Variables In Predictive Models

    Hi, I have a target variable Y, and twenty predictors (input variables) X1,X2,...,X20. I can predict Y by its predictors X1,X2,...,X20....

    Started by mojassameh‎, 06-02-2015 06:56 AM
    • Replies: 1
    • Views: 568
    06-02-2015, 07:16 AM Go to last post
  35. Ordinal vs Multinomial

    I am interested why predicted probabilities for ordinal and multinomial regressions differ? Can we explain this difference in terms of multinomial...

    Started by Dannysaf‎, 05-31-2015 05:25 PM
    • Replies: 0
    • Views: 635
    05-31-2015, 05:25 PM Go to last post
  36. step wise regression and bootstrap method

    anyone able to help me with an article i am critiquing? I wanted to do mediation model and I think the authors have used incorrect method but not...

    Started by howanru‎, 05-30-2015 08:15 PM
    • Replies: 1
    • Views: 674
    05-31-2015, 05:53 AM Go to last post
  37. Logistic Regression as Data Transform?

    Hello everyone, new here, glad to be here! I have what might be an unorthodox question. I use the matlab function 'mnrfit' ...

    Started by hcc‎, 05-30-2015 10:09 PM
    anova, data transformation, logistic regression, matlab, normal distribution
    • Replies: 1
    • Views: 879
    05-30-2015, 10:18 PM Go to last post
  38. Help with running two level binary logistic regression model

    Hello everyone, It is my first time when I am performing quantitative research. My master thesis is about determining specialist level and...

    Started by Evelina‎, 05-28-2015 09:35 AM
    • Replies: 1
    • Views: 684
    05-28-2015, 11:12 AM Go to last post
  39. Including cross-sectional variables in panel data analysis -- can I do that?

    Hello dear forum members, I have a panel data set with a count outcome variable. As far as I understand, Yit is conditional on Xit in panel...

    Started by kiton‎, 05-27-2015 12:16 AM
    • Replies: 3
    • Views: 794
    05-27-2015, 02:26 PM Go to last post
  40. Is logistic regression appropriate for this study?

    A study that compares 3 different categorical outcomes

    Started by professorzoom‎, 05-17-2015 07:00 PM
    • Replies: 1
    • Views: 711
    05-27-2015, 12:00 AM Go to last post
  41. Post Comando para correlacion contemporanea (modelo efectos aleatorios

    Buenas noches compañeros, busco un comando para el software stata 13.1, para poder estimar la correlacion contemporanea, para el modelo de efectos...

    Started by Juan Carlos 1991‎, 05-25-2015 09:26 PM
    • Replies: 2
    • Views: 915
    05-26-2015, 09:14 AM Go to last post
  42. Reporting logistic regression results

    Hi, I have a study that aims to find out the association of a binary outcome (e.g. BP control-Y/N) with categorical independent variables e.g....

    Started by Yi Ling‎, 05-25-2015 02:52 AM
    interpretation, logistic regression
    • Replies: 3
    • Views: 1,459
    05-25-2015, 10:29 PM Go to last post
  43. Significant effect disappears when separate analyses are conducted

    Dear all I have conducted an experiment in which subjects concurrently perform two tasks. Task A stays always the same, while Task B has two...

    Started by Scarlatti‎, 05-21-2015 10:14 PM
    • Replies: 0
    • Views: 605
    05-21-2015, 10:14 PM Go to last post
  44. The Dummy Variable Alternative to the Chow Test

    Hello, I'm writing a paper for econometrics. The deadline is approaching, but we have some problems with answering a question about the model that...

    Started by econometrics‎, 05-21-2015 04:34 PM
    • Replies: 0
    • Views: 1,625
    05-21-2015, 04:34 PM Go to last post
  45. Errors on fit parameters with no errors on data

    Hi all Many, maybe all, statistical packages I know of (R, matlab, root, sas) will allow you to fit data with no associated errors, and give you...

    Started by jonascj‎, 05-20-2015 11:38 PM
    errors, fit
    • Replies: 0
    • Views: 877
    05-20-2015, 11:38 PM Go to last post
  46. Estimate of Variance

    How does one obtain the best estimate of the variance of observations around the fitted model in SPSS? My thinking is that the best estimate of...

    Started by helppleasestats‎, 05-19-2015 06:36 PM
    fitted model, regression
    • Replies: 0
    • Views: 748
    05-19-2015, 06:36 PM Go to last post
  47. Hell Please. Linear Regression Model

    Which of the following is NOT assumed to contribute to uncertainty in predicting y from x in a standard Model I linear regression. a. Uncertainty...

    Started by helppleasestats‎, 05-18-2015 08:57 AM
    help me, linearregression, mcq
    • Replies: 8
    • Views: 1,005
    05-19-2015, 09:42 AM Go to last post
  48. Residual variance of OLS regression from R-Squared?

    Can residual variance of OLS regression be derived from R-Squared, and if so, how?

    Started by BigBugBuzz‎, 05-16-2015 03:04 PM
    r-square, residual
    • Replies: 2
    • Views: 1,017
    05-17-2015, 11:51 AM Go to last post
  49. logistic regression for customer data

    Hey guys, i'm supposed to build a logistic model, but i'm not quite sure how to begin. i have two data sets. One for the customers( all...

    Started by Lisa_‎, 05-16-2015 09:16 AM
    • Replies: 0
    • Views: 668
    05-16-2015, 09:16 AM Go to last post
  50. New with Stata - Changes in Beta event study question

    Hello, I am trying to do an event study regarding beta and check if beta changes after stock splits dates. I am planning on checking if the...

    Started by Quatze‎, 05-14-2015 06:16 PM
    • Replies: 0
    • Views: 764
    05-14-2015, 06:16 PM Go to last post
  51. Paired/Matched Sample with Hierarchical Moderated Regression Question

    Hello Everyone, I would greatly appreciate some help with this question. I am trying to help a good friend with her dissertation and am now...

    Started by psycgirl‎, 05-14-2015 05:14 PM
    • Replies: 0
    • Views: 660
    05-14-2015, 05:14 PM Go to last post
  52. Time series regression with blocks of years?

    I am evaluating the impact of policy changes over time. There are three separate time periods, each representing a number of years, and I want to see...

    Started by katiegud‎, 05-14-2015 06:16 AM
    • Replies: 3
    • Views: 1,179
    05-14-2015, 03:29 PM Go to last post
  53. Independent Variables and Dependent Variable Regression Analysis

    I came across this question which best explain what a need in one of the forum, however it was not answered. Please assist based on the scenario...

    Started by Mosima‎, 05-12-2015 02:39 PM
    • Replies: 7
    • Views: 1,102
    05-14-2015, 01:55 AM Go to last post
  54. GLS regression STATA

    Hi, is there a command in Stata that allows for GLS regression without panel data? or am I missing something? Thanks

    Started by harleystats‎, 05-13-2015 06:00 PM
    regression analysis, regression help
    • Replies: 0
    • Views: 1,710
    05-13-2015, 06:00 PM Go to last post
  55. 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...

    Started by dnh‎, 05-13-2015 05:59 AM
    • Replies: 0
    • Views: 704
    05-13-2015, 05:59 AM Go to last post
  56. Regression with averaged data

    I have data that represents the average for a group, which I would like to use for my response variable. I have different variables that are...

    Started by twotone4‎, 05-12-2015 08:24 PM
    averages, regression
    • Replies: 0
    • Views: 1,165
    05-12-2015, 08:24 PM Go to last post
  57. Logistic regression and significance of continuous variables across 3 periods

    I'm currently working on a logistic regression analysis in R with a binary response variable (0 = non-used; 1 = used location). I am modeling...

    Started by arl139‎, 05-12-2015 07:28 AM
    logistic regression, regresiion
    • Replies: 3
    • Views: 854
    05-12-2015, 12:22 PM Go to last post
  58. Multiple Regression - Is it possible to constrain the coefficients to be positive?

    Another stumper ... I am running a multiple regression with two independent variables. The regression results look good, except that one coefficient...

    Started by statburner‎, 05-11-2015 01:08 PM
    • Replies: 6
    • Views: 1,051
    05-11-2015, 07:26 PM Go to last post
  59. Linear regression on a weighted moving average

    Hi, I was hoping to get some advice. I want to run a forecast using linear regression but wanted to account for any potential cyclic variations in...

    Started by Indigosoul‎, 05-11-2015 04:52 PM
    • Replies: 0
    • Views: 642
    05-11-2015, 04:52 PM Go to last post
  60. β and b

    Hi, Just starting with regression analysis but am confused with the interchangeability of β and b. Can someone clarify the difference? Thank...

    Started by stats_challenged‎, 05-11-2015 04:49 AM
    • Replies: 3
    • Views: 2,064
    05-11-2015, 04:31 PM Go to last post

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