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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. When to specify an interaction effect

    I have a model with about 20 variables in it (6 of them are dummies from a categorical variable with 7 levels). All of these are suggested by the...

    Started by noetsi‎, 03-08-2016 09:26 AM
    • Replies: 4
    • Views: 1,349
    03-08-2016, 01:18 PM Go to last post
  2. Linear Regression - Influence of experience on wage

    Hello Talk-Stats-Members, i am new to the forum and already have a (in my eyes) complex theoretical problem that i hope you can help me with. I...

    Started by Michael_‎, 05-05-2015 02:37 PM
    • Replies: 4
    • Views: 2,179
    05-06-2015, 03:30 PM Go to last post
  3. 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: 1,250
    06-29-2015, 07:06 AM Go to last post
  4. 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: 1,404
    06-29-2015, 02:45 AM Go to last post
  5. Using residuals as predictors to adjust for effects of covariate in regression

    I was wondering if this is appropriate: I have two predictors that are highly correlated and collinear, x1 and x2, and are both associated with Y....

    Started by Disvengeance‎, 07-21-2015 02:14 PM
    • Replies: 4
    • Views: 2,213
    07-21-2015, 03:50 PM Go to last post
  6. What if you are not interested in a variable that has been found to matter in the lit

    The article I am working for stresses the importance of a variable that my organization has no interest in at all. It is an important control, should...

    Started by noetsi‎, 07-31-2015 01:03 PM
    • Replies: 4
    • Views: 1,918
    08-01-2015, 03:28 AM Go to last post
  7. Logistic Regression

    Hello I am going to start building a Logistic Regression model based on medical data for the purpose of classification. My problem started with...

    Started by osamastat‎, 08-15-2015 05:44 AM
    • Replies: 4
    • Views: 2,223
    08-16-2015, 01:37 PM Go to last post
  8. Dealing with multicollinearity

    I have a following model: y=a+b1x1+b2x2+b3x1x2+b4x3+other terms $ Let's say, I am only interested in coefficient b3. The magnitude of coefficient...

    Started by smith.shrestha‎, 09-03-2015 06:53 AM
    multicollinearity, multiple regression
    • Replies: 4
    • Views: 1,662
    09-03-2015, 10:19 AM Go to last post
  9. Lightbulb Binary predictor in regression analysis?

    I have just had a lecture with a lecturer summarizing regression analysis, and showed us some examples. One of those examples included a regression...

    Started by Lukan27‎, 09-11-2015 11:38 AM
    • Replies: 4
    • Views: 1,833
    09-12-2015, 11:23 AM Go to last post
  10. lagged variables in a model

    Hi, i am reading an academic article and i am not sure i understood the model correctly. 1. It is written that the dependent variable is...

    Started by ophiroz‎, 09-15-2015 01:04 PM
    • Replies: 4
    • Views: 1,766
    10-10-2015, 09:41 AM Go to last post
  11. Please help with the regression analysis result

    Greetings everyone, I'm currently working on my Bachelor thesis relating to behavioral finance. My topic requires me to run a regression analysis...

    Started by darkblade0808‎, 09-20-2015 11:05 PM
    • Replies: 4
    • Views: 2,832
    07-24-2016, 02:41 AM Go to last post
  12. The best formula to use in excel to forecast daily call volume?

    I have used single and double exponential smoothing, but did not know if there is a more accurate approach to predict how many calls that can be...

    Started by mdo8105‎, 09-24-2015 03:16 PM
    holt winters, regression analysis, time series forecast
    • Replies: 4
    • Views: 6,170
    10-01-2015, 01:46 PM Go to last post
  13. How to treat missing IV cases in logistic regression?

    Hey folks, quick question: I am analyzing consumers advertising click behavior (click/no-click =DV) and two IVs in this model are the location of...

    Started by oniontoast‎, 09-30-2015 10:52 AM
    • Replies: 4
    • Views: 2,396
    09-30-2015, 01:38 PM Go to last post
  14. Physics Teacher with a question of appropriate use of regression equaitons

    Is it ever acceptable to replace discrete measured values with a continuous function if you are certain you have the right model? For the last...

    Started by Mr. O‎, 10-10-2015 07:39 PM
    calculus, lab data, physics, regression analysis
    • Replies: 4
    • Views: 2,299
    10-11-2015, 01:56 PM Go to last post
  15. Multi variable Regression

    Dear Regression Experts, I am new in this field, I have set of data of about 1 lac entries having a total of 10 variables of which 9 are input...

    Started by wali‎, 12-10-2015 07:27 AM
    • Replies: 4
    • Views: 1,725
    12-12-2015, 01:34 AM Go to last post
  16. Tjur's pseuo R squared

    Paul Allison recommends this now for logistic regression, but I have never run across it (it has not been formally named this, Tjur is the author who...

    Started by noetsi‎, 12-15-2015 03:39 PM
    • Replies: 4
    • Views: 2,927
    12-15-2015, 09:05 PM Go to last post
  17. Logistic Regression

    I am looking at a medical outcome (binary) and known risk factors. There are 10 established risk factors that I will test in my sample of 300...

    Started by hlsmith‎, 12-18-2015 09:28 AM
    • Replies: 4
    • Views: 1,572
    12-18-2015, 10:04 AM Go to last post
  18. Query: Using independent variables in regression.

    1. When putting in independent variables in regression model, for example "income" and my outcome is health status. I can use income as categorical...

    Started by Tilipa‎, 12-28-2015 07:20 PM
    regression analysis
    • Replies: 4
    • Views: 1,643
    12-29-2015, 02:07 PM Go to last post
  19. Comparing the outcome of two contingency tables

    Hi all, I have a data set for two different days. The treatments and outcomes are same but the assays were performed on two different days. I...

    Started by skgatx‎, 01-13-2016 09:31 PM
    • Replies: 4
    • Views: 1,760
    01-15-2016, 12:55 PM Go to last post
  20. Question Regression Type Estimation

    Hello, Attached is a time series data that has a plot of the percentage of breakdowns on a scheduled hours across the days. The objective is to...

    Started by Mukund‎, 01-20-2016 07:08 AM
    • Replies: 4
    • Views: 1,570
    01-21-2016, 09:06 AM Go to last post
  21. Which test for cont DV, 1 nominal IV (2 cat) + 1 nominal IV (4 cat) + 1 cont IV

    Hello, I am a bit struggling with choosing which test I should apply to my data. My dependent variable is continuous (participants could score...

    Started by Pernelle‎, 01-22-2016 06:26 AM
    • Replies: 4
    • Views: 2,465
    01-24-2016, 07:30 AM Go to last post
  22. Linear regression with all categorical variables SPSS

    Hello, I am running a multivariate regression analysis on the presence of an organism in an infection (dependent variable), and certain risk factors...

    Started by ssrx‎, 04-18-2016 07:32 PM
    • Replies: 4
    • Views: 856
    04-20-2016, 12:49 PM Go to last post
  23. Question Dummy variable in a Fixed effects (FE) model

    Hello :-) I am doing a paper where I examine the Scandinavian welfare model effect on inequality in the Scandinavian countries. I examine it using...

    Started by JoLinda91‎, 03-03-2016 05:54 AM
    • Replies: 4
    • Views: 1,658
    03-10-2016, 02:35 PM Go to last post
  24. Partial effect plot: Which options do I have?

    Hi, I have a multiple regression model, and I would like to do an effect plot with confidence bands regarding one of the predictors. One solution...

    Started by mmercker‎, 03-16-2016 11:38 AM
    confidence bands, effect plot, regression plot
    • Replies: 4
    • Views: 1,685
    03-17-2016, 02:21 AM Go to last post
  25. "Sensitivty" analysis

    I have not encountered this before. It occurs in the context of "mixed effects OLS regression" (not sure exactly what type of regression that is...

    Started by noetsi‎, 03-18-2016 01:31 PM
    • Replies: 4
    • Views: 1,493
    03-18-2016, 04:10 PM Go to last post
  26. How to report a non-significant regression?

    Hi guys, For my final year research project, I have a few regression models with non-significant results. I was just wondering what the...

    Started by twinpeaks‎, 03-27-2016 08:38 AM
    • Replies: 4
    • Views: 6,158
    03-29-2016, 03:45 AM Go to last post
  27. Anova find significant diferrences

    Hi all, I have made an one-way anova in order to test if three populations have the same means. My result is to reject the null hypothesis. So,...

    Started by petros20‎, 03-29-2016 12:43 PM
    • Replies: 4
    • Views: 1,334
    03-30-2016, 01:17 AM Go to last post
  28. Robust regression, bootstrapping and indirect effect

    Hi there, I am currently learning to do mediation analysis using bias-corrected accelerated bootstrap confidence intervals, similar to the...

    Started by Tux‎, 04-01-2016 12:26 PM
    • Replies: 4
    • Views: 1,565
    04-01-2016, 07:55 PM Go to last post
  29. Confused about my Logistic Regression output (SPSS)

    Hi Guys, I've conducted a binary logistic regression using 2 categorical predictors (Static-moving and moving-static) and an outcome variable...

    Started by daveholja‎, 04-05-2016 08:12 AM
    • Replies: 4
    • Views: 1,221
    04-06-2016, 04:44 AM Go to last post
  30. Post Linear Regression Interpretation

    Hi there, I am running a Multiple Linear Regression analysis. I have 2 predictor variables (self-worth and self-acceptance) and 1 criterion...

    Started by vanessak93‎, 05-01-2016 08:21 PM
    interpretation, linear regression, multiple regression, psychology statistics, regression
    • Replies: 4
    • Views: 1,724
    05-01-2016, 08:38 PM Go to last post
  31. Logistic regression - basics

    Dearest stat colleagues, I have some basic questions regarding logistic regression that I hope you can help me out with. Iím running a simple...

    Started by Jeff135‎, 05-31-2016 01:39 PM
    • Replies: 4
    • Views: 1,996
    06-01-2016, 06:48 PM Go to last post
  32. Optimal cut-off from ROC

    Hello, as you know, ROC curve is not depend of the cut-off. But how can I get an "optimal" cut-off from ROC curve? Example: I have a database...

    Started by tradermartin‎, 05-25-2016 03:34 AM
    • Replies: 4
    • Views: 1,022
    05-26-2016, 01:53 PM Go to last post
  33. Multiple Regression Analysis - Two independent variables, one w/same values

    Post closed.

    Started by ablong‎, 06-13-2016 12:18 AM
    • Replies: 4
    • Views: 1,558
    06-13-2016, 09:23 AM Go to last post
  34. Finding predicted values with logged (ln) dependent variable.

    Hello all, I'm currently working on my first quantitative project. I am doing an OLS regression in SPSS. I had to take the natural log of my DV in...

    Started by burdfishdemon‎, 07-27-2016 03:21 AM
    log transformation, ols, predicted values, spss, statistics
    • Replies: 4
    • Views: 3,757
    01-23-2017, 11:16 AM Go to last post
  35. How to Interpret the Factor Analysis Findings

    Kindly help in interpreting the SPSS Factor Analysis findings as attached

    Started by Zainab‎, 07-23-2016 03:44 PM
    • Replies: 4
    • Views: 2,237
    07-24-2016, 12:37 PM Go to last post
  36. Hypothesis for logistic regression

    I get a group of data and would like to use the regression to analysis the relationship. The dependent variable Y is a kind of loss rate, so it is...

    Started by pepsico007‎, 07-27-2016 08:30 AM
    hypothesis, logistic, regression
    • Replies: 4
    • Views: 2,348
    07-27-2016, 12:37 PM Go to last post
  37. Variance of single element of random effects in linear mixed model

    Hi there, I have recently been working a bit with linear mixed model and in order to enhance my understanding of those, I would like to know the...

    Started by lo2‎, 08-14-2016 05:11 AM
    • Replies: 4
    • Views: 1,424
    08-24-2016, 10:38 AM Go to last post
  38. Interaction effect

    Hey guys, I would like to investigate effect of a treatment in randomized control trial. Also, I would like to investigate the moderating effect...

    Started by floriisco‎, 08-15-2016 12:48 PM
    interaction effect, interactive terms
    • Replies: 4
    • Views: 1,128
    08-15-2016, 01:13 PM Go to last post
  39. Categorical multiple linear regression analysis - what would you do?

    Noob here. I'm doing a project to determine how different factors (race, insurance status) are related to distance from pediatric urologists. I'm...

    Started by gliomanerd‎, 09-01-2016 10:35 AM
    categorial analysis, multiple regression
    • Replies: 4
    • Views: 1,079
    09-05-2016, 07:16 PM Go to last post
  40. Basic Estimation; Should I use future data?

    Hi everyone, I'm new on the forum but had a question to ask that's related to the work I currently do. I'm wondering if we should include...

    Started by Edorian‎, 10-04-2016 06:54 PM
    • Replies: 4
    • Views: 1,320
    10-23-2016, 10:24 PM Go to last post
  41. Multinomial regression: how to interpret results

    Hello Everyone, I'm currently writing my master's dissertation and i'm having two main issues. 1) The first one is related to the attached...

    Started by GiuliaCarbone‎, 10-30-2016 03:41 PM
    • Replies: 4
    • Views: 1,962
    10-31-2016, 01:57 PM Go to last post
  42. logistic regression or survival analysis?

    Hello, I have two main questions that I hope you help me answer. Let me give you the scenario first. Letís say that some students in a school are...

    Started by Marvin85‎, 11-14-2016 04:44 PM
    controlling for time, survival analysis, time post
    • Replies: 4
    • Views: 2,414
    11-15-2016, 10:41 AM Go to last post
  43. Multiple Logistic Regression question

    Greetings, I have three categorical IVs and one categorical DV. However, the DV is a self-reported ranking from 1 to 4 (1= not important, 4 = very...

    Started by Luxor‎, 11-30-2016 02:29 PM
    • Replies: 4
    • Views: 2,452
    12-01-2016, 01:46 PM Go to last post
  44. conditional logit model_help with data interpretation

    0 down vote favorite I have performed a clogit following the instruction of Aizaki et al.2012 but I am not sure on how to interpret some results...

    Started by senzu‎, 12-08-2016 12:13 PM
    clogit, coefficient, logit model
    • Replies: 4
    • Views: 2,813
    12-09-2016, 09:26 AM Go to last post
  45. Linear Regression - Beginner Need Help

    Hello everyone, I have a simple exercise to do about linear regressions and models but I have a few doubts. The exercise gives you 2 vectors(let's...

    Started by dieselonthecouch‎, 12-14-2016 10:38 AM
    • Replies: 4
    • Views: 2,886
    12-14-2016, 03:04 PM Go to last post
  46. question !!

    I am helping my niece in explaining regression analysis by studying by myself and finding problems and trying to solve those. one of the problem has...

    Started by rka_stat‎, 04-29-2017 06:33 AM
    • Replies: 4
    • Views: 1,089
    04-30-2017, 07:58 AM Go to last post
  47. Zero inflated negative binomial regression interpreting main and interaction effects

    I am running a zero inflated negative binomial model (zinb) and want to interpret the main and interaction effects. I have the following: ...

    Started by random_android‎, 04-21-2017 03:51 PM
    interaction effects, main effect, negative binomial model, stata 14, zero inflated
    • Replies: 4
    • Views: 1,020
    04-22-2017, 02:43 AM Go to last post
  48. Got some questions on simple regression

    Hello everybody! I'm learning how to use SAS program and I have some questions when I got this ANOVA (view pic) - Are the two parameters estimated...

    Started by ElijahWood‎, 02-08-2017 12:36 PM
    • Replies: 4
    • Views: 2,089
    02-08-2017, 10:20 PM Go to last post
  49. Newbie Question

    Hello, Just wondering if someone could help me. I have a degree in Maths and have done second year Uni Maths stats (but quite a while ago) so...

    Started by PinkyP2‎, 04-13-2017 11:44 PM
    • Replies: 4
    • Views: 779
    04-16-2017, 11:31 PM Go to last post
  50. Can you include X1/X2 in a model when you've already included X1 and X2?

    Can you include X1/X2 in a model when you've already included X1 and X2? For example, I am trying to predict housing prices. X1=square feet and...

    Started by smw10c‎, 04-08-2017 12:40 PM
    • Replies: 4
    • Views: 693
    04-11-2017, 02:59 PM Go to last post
  51. Model validation in regression

    I was wondering, for this question and why. I think its in-sample but curious why. 1) Models need to be validated: a. In-sample b....

    Started by msoe414‎, 04-07-2017 03:49 PM
    • Replies: 4
    • Views: 956
    04-08-2017, 06:58 PM Go to last post
  52. Hypothesis interpretation

    Dear I'm wondering how I should interpret my hypotheses. The first one is "the relationship between X1 and Y increases as X3 increases" and the...

    Started by Hypnoz‎, 03-31-2017 02:03 PM
    • Replies: 4
    • Views: 896
    04-01-2017, 03:09 AM Go to last post
  53. When log transformation

    Hello, I am a bit confused with WHY and WHEN you should take the log of the dependent variable and/or independent variables, after running a...

    Started by Jazz3‎, 03-14-2017 12:20 PM
    • Replies: 4
    • Views: 968
    03-17-2017, 08:23 AM Go to last post
  54. Expert Help Required - Multiple Regression with Nominal and Scale Variables

    Hi all, I'm having huge issues with the assumptions of multiple regression and determining whether I am running my analysis correctly. First of...

    Started by Aegislash‎, 02-27-2017 05:28 AM
    dummy coding, multiple regression, nominal, scale
    • Replies: 4
    • Views: 2,090
    02-27-2017, 01:25 PM Go to last post
  55. Comparison of Coefficients of two different Regression Models

    Hi everyone, I am analyzing the impact of price and promotion activities on sales in two separate 2-Way-Fixed Effects models. One model is for...

    Started by LariB‎, 01-23-2017 04:08 AM
    • Replies: 4
    • Views: 2,845
    01-27-2017, 03:53 PM Go to last post
  56. SPSS: regression analysis for 3x2 experiment. How to test for interaction

    Dear all, For my research I have the following facts: - I have two categorical IVs: - treatment condition called competition, which has...

    Started by Ricovermeulen‎, 01-25-2017 09:39 AM
    3x2, anova, experiment, regression
    • Replies: 4
    • Views: 2,739
    01-29-2017, 04:19 AM Go to last post
  57. Variation in significance Categorical Regression Analysis (CATREG)

    Hello, I am doing Categorical Regression Analysis (CATREG) with SPSS. However, every time i run the analysis, the standard error and p-value vary...

    Started by mfi_shakil‎, 05-15-2017 09:44 AM
    catreg, spss
    • Replies: 4
    • Views: 797
    05-16-2017, 11:03 AM Go to last post
  58. Trichotomizing an Independent Variable

    In SPSS, how does one go about trichotomizing an independent variable such that about 33% are in each of the three groups?

    Started by langood‎, 06-08-2017 11:54 AM
    linear regression, multiple regression, trichotomize
    • Replies: 4
    • Views: 604
    06-08-2017, 06:19 PM Go to last post
  59. Regression or regression alternatives for data missing not at random

    I am analyzing the results of a satisfaction survey. The research question or goal is to determine whether or not (dis-)satisfaction with...

    Started by appendix‎, 07-29-2017 09:08 PM
    • Replies: 4
    • Views: 309
    07-31-2017, 02:43 PM Go to last post
  60. [Linear Regression] Regression with aggregated or separated years?

    Hello to everyone! :wave: I should do some regressions but i've an important and simple question... my dataset have this structure: ...

    Started by andre94‎, 08-25-2017 09:32 AM
    aggregation, linear regression, regression analysis
    • Replies: 4
    • Views: 310
    08-25-2017, 12:00 PM Go to last post

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