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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Help creating my first logistic Regression model

    Hi everyone, I`m new here, and new in the stats world, and i have several questions and need for help on how to proceed. First, what i`m doing...

    Started by Perdido‎, Yesterday 09:29 AM
    • Replies: 8
    • Views: 136
    Yesterday, 03:21 PM Go to last post
  2. Testing heteroscedasticity statistically

    Hi everyone, I conducted a Breush-Pagantest and it is unsignificant, so there is no heteroscedasticity. My residual plot however looks pretty...

    Started by Charlotte_‎, Yesterday 03:20 AM
    breush-pagan, white's test
    • Replies: 2
    • Views: 97
    Yesterday, 04:05 AM Go to last post
  3. How to Handle Blank Fields in Multiple Linear Regression

    I am building a regression with 45 samples across 20+ independent variables. I am randomly selecting subsets of the variables and running many...

    Started by Ahmntz‎, 06-29-2015 08:24 AM
    blank fields, least squares regression, missing data, regression, regression analysis
    • Replies: 2
    • Views: 179
    07-02-2015, 01:32 PM Go to last post
  4. multivariate regression ?

    Hello everyone, I would like to check whether gross margin% is different in different segments. With segments I mean f.e. quantity, weight,...

    Started by pjlambrecht‎, 06-26-2015 12:40 AM
    • Replies: 3
    • Views: 249
    06-30-2015, 07:07 AM Go to last post
  5. Time series regression

    I am trying to learn how to conduct regression with time series data . I intend to use ARDL which is time series with autoregressive error with the...

    Started by noetsi‎, 06-29-2015 03:51 PM
    • Replies: 0
    • Views: 127
    06-29-2015, 03:51 PM Go to last post
  6. Determining the weight of variables

    I am trying to determine if one of the numbers in regression summary provide the weight of the important of each variable? Here is an example: ...

    Started by MikeDrohan‎, 06-26-2015 09:10 AM
    regression analysis
    • Replies: 4
    • Views: 113
    06-29-2015, 07:06 AM Go to last post
  7. Log

    Dear all, Im am doing an OLS regression. My dependent variable has large negative values, many zeros and large positive values. How can I...

    Started by Joanne Smith‎, 06-28-2015 06:00 AM
    • Replies: 4
    • Views: 133
    06-29-2015, 02:45 AM Go to last post
  8. general mediation question

    Hi guys Probably the easiest question ever but I can't really wrap my head around it. The setup of the research is as follow: X and M =...

    Started by Conni20‎, 06-27-2015 09:14 AM
    • Replies: 1
    • Views: 113
    06-27-2015, 04:22 PM Go to last post
  9. "Lumping" multiple data sets into one for regression

    Closed - moved sub-forums

    Started by reactant‎, 06-26-2015 01:25 PM
    • Replies: 0
    • Views: 135
    06-26-2015, 01:25 PM Go to last post
  10. help with stats

    can someone help explain what this means

    Started by mdnelson‎, 06-26-2015 11:27 AM
    • Replies: 3
    • Views: 78
    06-26-2015, 12:44 PM Go to last post
  11. 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: 54
    06-26-2015, 11:18 AM Go to last post
  12. 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: 77
    06-26-2015, 08:56 AM Go to last post
  13. 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: 105
    06-25-2015, 02:33 PM Go to last post
  14. 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: 118
    06-25-2015, 07:50 AM Go to last post
  15. 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: 157
    06-24-2015, 04:21 PM Go to last post
  16. 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: 276
    06-24-2015, 11:59 AM Go to last post
  17. 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: 67
    06-24-2015, 10:38 AM Go to last post
  18. 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: 182
    06-24-2015, 02:09 AM Go to last post
  19. 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: 96
    06-23-2015, 09:27 PM Go to last post
  20. Corporate Governance Explanations effects on Firm Value

    Hi all, I'm quite new to statistics and need some guidance for my dissertation. The University is messing up with my supervisor resulting in me...

    Started by Vislian‎, 06-23-2015 09:54 AM
    • Replies: 0
    • Views: 71
    06-23-2015, 09:54 AM Go to last post
  21. 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: 65
    06-23-2015, 06:51 AM Go to last post
  22. help with non-normality issue!

    Thread has already been solved.

    Started by Conni20‎, 06-23-2015 06:13 AM
    • Replies: 3
    • Views: 130
    06-23-2015, 06:37 AM Go to last post
  23. 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: 205
    06-22-2015, 08:17 AM Go to last post
  24. 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: 138
    06-21-2015, 09:27 AM Go to last post
  25. Experiment Design Help please

    Hi All I have used a Central Composite Design (CCD) for my experiments, where I have three Factors (A, B, c) and each Factor has five values. I have...

    Started by Dlair‎, 06-21-2015 08:16 AM
    • Replies: 0
    • Views: 120
    06-21-2015, 08:16 AM Go to last post
  26. 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: 323
    06-17-2015, 05:54 AM Go to last post
  27. 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: 182
    06-15-2015, 03:30 PM Go to last post
  28. 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: 223
    06-14-2015, 10:12 AM Go to last post
  29. 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: 122
    06-14-2015, 06:16 AM Go to last post
  30. 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: 122
    06-14-2015, 06:05 AM Go to last post
  31. 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: 268
    06-10-2015, 09:32 AM Go to last post
  32. 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: 411
    06-09-2015, 11:38 AM Go to last post
  33. 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: 249
    06-08-2015, 12:53 PM Go to last post
  34. 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: 164
    06-07-2015, 02:42 PM Go to last post
  35. 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: 261
    06-07-2015, 01:51 PM Go to last post
  36. 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: 304
    06-07-2015, 01:28 PM Go to last post
  37. 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: 164
    06-07-2015, 05:42 AM Go to last post
  38. 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: 316
    06-05-2015, 07:49 AM Go to last post
  39. 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: 257
    06-05-2015, 02:39 AM Go to last post
  40. 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: 192
    06-04-2015, 01:03 PM Go to last post
  41. 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: 151
    06-03-2015, 07:29 PM Go to last post
  42. 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: 111
    06-03-2015, 01:53 AM Go to last post
  43. 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: 1,159
    06-02-2015, 09:08 AM Go to last post
  44. 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: 92
    06-02-2015, 08:38 AM Go to last post
  45. 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: 140
    06-02-2015, 07:16 AM Go to last post
  46. 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: 171
    05-31-2015, 05:25 PM Go to last post
  47. 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: 222
    05-31-2015, 05:53 AM Go to last post
  48. 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: 226
    05-30-2015, 10:18 PM Go to last post
  49. 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: 259
    05-28-2015, 11:12 AM Go to last post
  50. 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: 279
    05-27-2015, 02:26 PM Go to last post
  51. 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: 277
    05-27-2015, 12:00 AM Go to last post
  52. 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: 254
    05-26-2015, 09:14 AM Go to last post
  53. 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: 277
    05-25-2015, 10:29 PM Go to last post
  54. 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: 196
    05-21-2015, 10:14 PM Go to last post
  55. 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: 180
    05-21-2015, 04:34 PM Go to last post
  56. 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: 173
    05-20-2015, 11:38 PM Go to last post
  57. 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: 201
    05-19-2015, 06:36 PM Go to last post
  58. 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: 409
    05-19-2015, 09:42 AM Go to last post
  59. 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: 258
    05-17-2015, 11:51 AM Go to last post
  60. 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: 197
    05-16-2015, 09:16 AM Go to last post

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