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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Interpreting coefficients in pooled cross-sectional data with cluster-dummies

    Data: pooled cross-sectional data. 6 countries. 3 years of cross sectional data (10 year gaps in between), with different samples of individuals in...

    Started by Stropharia‎, 01-25-2016 10:15 PM
    cross-sectional, fixed effects model, regression coefficients
    • Replies: 0
    • Views: 344
    01-25-2016, 10:15 PM Go to last post
  2. What to do about violations of assumptions

    This is one example of a larger topic Say you are doing logistic regression and you have influential data points. You can't use robust regression...

    Started by noetsi‎, 01-25-2016 12:53 PM
    • Replies: 9
    • Views: 615
    01-25-2016, 06:01 PM Go to last post
  3. The Tobit Model

    Greatings for all, Suppose we are using the Latent Variable Formulation (i.e. not the Generalized Linear Modeling) for a multiple regression model...

    Started by Vivo Gharib‎, 01-25-2016 07:03 AM
    • Replies: 0
    • Views: 308
    01-25-2016, 07:03 AM Go to last post
  4. Positive definite issue with Likert data

    Hello, I ran my first data set through SPSS for a recent 5-point Likert questionnaire but am returning a "not positive definite" on the reduction. ...

    Started by jonwilliams‎, 01-24-2016 01:36 PM
    • Replies: 0
    • Views: 342
    01-24-2016, 01:36 PM Go to last post
  5. 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: 620
    01-24-2016, 07:30 AM Go to last post
  6. Different signs

    Hello everybody: I have a litte problem interpreting my regression output. In the first regression, I have a continuous variable with a...

    Started by Student90‎, 01-23-2016 08:44 AM
    • Replies: 5
    • Views: 686
    01-24-2016, 05:09 AM Go to last post
  7. Ordinal Time-Series Dependent Variable

    I am attempting to run a regression with an ordinal DV that is panel/time series data. I only have SPSS and with the ordinal DV, it seems I should be...

    Started by COB1010‎, 01-23-2016 04:38 PM
    • Replies: 3
    • Views: 385
    01-23-2016, 05:00 PM Go to last post
  8. [R]: ROC curve after fitting a logistic model to a new datset

    Hello, I have fitted a Logistic Regression model (with 1 binary DV, and several IVs), and then I fitted it to a new dataset using the function...

    Started by gianmarco‎, 01-22-2016 08:24 AM
    • Replies: 5
    • Views: 519
    01-23-2016, 06:45 AM Go to last post
  9. fit an ARIMA-model with t -distributed innovation terms

    Hello, I have to fit an ARIMA-model with t -distributed innovation terms (skew-t) with software R. If I use arima function (package "stats") I...

    Started by cristal‎, 01-22-2016 10:41 AM
    • Replies: 0
    • Views: 364
    01-22-2016, 10:41 AM Go to last post
  10. Bounds for R2 in OLS regression?

    Context: From the big dataset Im working with, my boss is somewhat curious (read skeptic) as for why fitting a multiple linear regression with...

    Started by spunky‎, 01-21-2016 07:57 PM
    • Replies: 1
    • Views: 371
    01-21-2016, 09:27 PM Go to last post
  11. 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: 623
    01-21-2016, 09:06 AM Go to last post
  12. Regression with skewed data

    Our data is highly skewed, so much so that we routinely report median values not average ones in descriptive models. Now I am running regression with...

    Started by noetsi‎, 01-20-2016 05:02 PM
    • Replies: 3
    • Views: 649
    01-21-2016, 04:16 AM Go to last post
  13. Alternatives to ANCOVA? Unequal slopes.

    Hello, and thank you for your help on my question. My goal is to compare multiple groups to determine if a certain "variable of interest" is...

    Started by mgranatosky‎, 01-19-2016 11:04 PM
    • Replies: 5
    • Views: 576
    01-20-2016, 03:55 PM Go to last post
  14. Power analysis and sample size

    Hello all, I've used perused this site numerous times in the past for assistance with statistical issues, but this is my first post. I work with...

    Started by biosci1978‎, 01-19-2016 03:54 PM
    linear regression, power analysis, sample size
    • Replies: 0
    • Views: 299
    01-19-2016, 03:54 PM Go to last post
  15. Cant do a linear regression on a subset of my data: Error

    I installed the R package AER, from which you get the data `PSID1982`. Then I define this model: data("PSID1982") set.seed(15606) ...

    Started by Latriuz‎, 01-17-2016 11:53 AM
    • Replies: 0
    • Views: 371
    01-17-2016, 11:53 AM Go to last post
  16. Logistic model in overall population or in sub-population?

    Hello, I am not sure if this is the right place to ask my question. I really appreciate your help because I am really a beginner in bio...

    Started by johnstatistic‎, 01-15-2016 09:26 PM
    • Replies: 3
    • Views: 484
    01-15-2016, 11:01 PM Go to last post
  17. 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: 456
    01-15-2016, 12:55 PM Go to last post
  18. How to test for difference between 2 R-Squared in Binary Hierarchical Regression?

    I ran a BINARY hierarchical regression in SPSS. However, I could not find an option to test change in R-Squared. So is there a way to test it in...

    Started by wannafly‎, 01-15-2016 09:18 AM
    • Replies: 3
    • Views: 469
    01-15-2016, 10:14 AM Go to last post
  19. Unimodal Link-function possible?

    Hi, using a GLM model (e.g. a Poisson regression), there are various link functions available in statistical packages. However, I don't find an...

    Started by mmercker‎, 01-08-2016 03:14 AM
    glm regression, link function, normal curve, probit
    • Replies: 6
    • Views: 665
    01-13-2016, 04:03 PM Go to last post
  20. Instrumental variable apporach: two stage least squares

    Hello everyone, I want to test cross sectional data with a household survey with 60k plus of respondents (however missing data result in overall...

    Started by Carlos_1‎, 01-11-2016 03:38 PM
    • Replies: 1
    • Views: 502
    01-11-2016, 08:05 PM Go to last post
  21. Help with linear regression when multiple subjects

    Hi, I have some data where each subject is presented with pairwise combinations of four test items (A, B, C and D). Each observation is a...

    Started by deeuu‎, 01-11-2016 06:01 AM
    linear regression, repeated measures
    • Replies: 0
    • Views: 392
    01-11-2016, 06:01 AM Go to last post
  22. Question Conceptual queries in modeling

    Hi all, I am from engineering background. I would require your help in certain conceptual questions in modeling. Your help would be greatly...

    Started by rags140684‎, 01-04-2016 01:34 AM
    logistic, modeling, p-value, regression, statistics
    • Replies: 2
    • Views: 570
    01-09-2016, 01:53 PM Go to last post
  23. Pleease help!? Filling in "blanks" in Regression Output

    Hello! Can someone please explain, I need to fill in the blanks marked They provide this info in a row: Coeff:-9074.674 Std.Err: ?? ...

    Started by Cold_w‎, 01-06-2016 03:26 PM
    p-value, regression analysis, standard error, stata, t-statistic
    • Replies: 9
    • Views: 1,027
    01-07-2016, 07:42 AM Go to last post
  24. Multiple Regression on Longitudinal AND Cross-sectional data

    Hello, I'm trying to make sure I'm doing a hierarchical multiple regression analysis correctly (and interpret the results correctly) with regards...

    Started by digestives‎, 01-05-2016 12:22 PM
    • Replies: 0
    • Views: 432
    01-05-2016, 12:22 PM Go to last post
  25. Contribution of multiple correlated effects on global observation

    Hello, In a perfect system, I have 0% of signal loss. I found that there are N effects that can contribute to signal loss. I activate each effect...

    Started by Cab‎, 08-04-2015 09:58 AM
    • Replies: 13
    • Views: 1,066
    01-05-2016, 11:35 AM Go to last post
  26. Can fixed effects models be used on cross sectional data?

    1) Does it make sense to use a fixed effects model on cross sectional data (note, not time-series cross sectional data) if the goal is to account for...

    Started by Stropharia‎, 01-04-2016 09:46 PM
    fixed effects regression
    • Replies: 0
    • Views: 507
    01-04-2016, 09:46 PM Go to last post
  27. Logistic Regression predicted probability is either 1 or 0 (or literally 2.2204E-16)

    I am doing a test logistic regression to predict whether employees will stay in the company for more than 3 years. After the model is trained, the...

    Started by Rizer‎, 01-01-2016 01:35 AM
    logistic regression
    • Replies: 11
    • Views: 1,580
    01-03-2016, 01:28 PM Go to last post
  28. Question Sample size

    I'm running a VAR model with five variables for the period 2000-2011. That's to say, 12 observations. I know the number of observations is small but...

    Started by siddig‎, 01-02-2016 11:40 AM
    • Replies: 2
    • Views: 510
    01-02-2016, 12:41 PM Go to last post
  29. Study Design for assessing efficacy of New Clinical Sign

    Hi! I am looking for some guidance as to what statistical tests I would need to do to know the significance of a study. The situation is this: ...

    Started by cielo‎, 01-02-2016 08:51 AM
    biostatistics, case control, clinical study, diagnostic test
    • Replies: 0
    • Views: 332
    01-02-2016, 08:51 AM Go to last post
  30. Logistic fixed effects cluster-specific interpretation with cross-sectional data

    I'm unsure how to interpret the output of a fixed effects (in the econometric sense) logistic regression model using cross-sectional data. I'm...

    Started by Stropharia‎, 01-01-2016 01:07 AM
    clustered data, fixed effects model, logistic regression
    • Replies: 0
    • Views: 453
    01-01-2016, 01:07 AM Go to last post
  31. Logistic Regression of NFL Data

    Week 5 picks from a logistic regression model for the NFL: http://trevorbischoff.com/nfl-2015-week-5-predictions/

    Started by LeeBalto‎, 10-07-2015 09:00 AM
    logistic regression, modeling, prediction
    • Replies: 8
    • Views: 1,943
    12-30-2015, 01:19 PM Go to last post
  32. interpreting interaction results in ols regression

    Dear all, I am trying to examine the association between household wealth and expenditure on education of children aged 11-17 and 5-10 in a...

    Started by anika13‎, 12-29-2015 12:45 PM
    • Replies: 1
    • Views: 490
    12-29-2015, 04:28 PM Go to last post
  33. 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: 636
    12-29-2015, 02:07 PM Go to last post
  34. Post ANOVA multi-variable problem

    If there is a dependent variable depending on 5 independent variables or factors, how to find the relative effect of these 5 groups on dependent...

    Started by prasun samir‎, 12-24-2015 09:12 PM
    • Replies: 3
    • Views: 706
    12-26-2015, 09:40 PM Go to last post
  35. Linear regression and dichotomous variable

    Hello I would like to do a linear regression (stepwise), and one of the variables I want to enter is sick/ not sick. The other variables are from...

    Started by talgef‎, 12-22-2015 04:43 AM
    • Replies: 1
    • Views: 487
    12-22-2015, 07:14 AM Go to last post
  36. Percentage change of dependent variable (MLR)

    Greetings, I went through SPSS regression analysis of a certain dataset, tested assumptions, and finally I got a multiple regression model:...

    Started by bellcross‎, 12-20-2015 09:13 AM
    • Replies: 3
    • Views: 1,819
    12-21-2015, 03:34 PM Go to last post
  37. The assumptions of multiple regression: An article by TalkStatters!

    Hi everyone, A lot of you are aware of this already, but I'm posting this to a public subforum on Quark's suggestion :) Recently a group of 3...

    Started by CowboyBear‎, 09-10-2013 11:31 PM
    • Replies: 3
    • Views: 59,373
    12-21-2015, 02:02 PM Go to last post
  38. adding skewness and kurtosis to CAPM - regression

    Suppose I have a set of monthly returns of a stock, monthly 'market' returns and some risk free rate for lets say 10 years. Performing an usually OLS...

    Started by Deusdeorum‎, 07-21-2015 04:55 AM
    capm, regression analysis
    • Replies: 1
    • Views: 1,825
    12-18-2015, 07:26 PM Go to last post
  39. 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: 709
    12-18-2015, 10:04 AM Go to last post
  40. Commonality analyses/structure coefficients/relative importance

    Dear members: I am conducing a 2-way moderation and I would like to determine the meaningful implications of each of my predictors (IV, Moderator,...

    Started by Elena_Iva‎, 12-17-2015 09:34 PM
    • Replies: 0
    • Views: 422
    12-17-2015, 09:34 PM Go to last post
  41. Nominal predictor with 70 levels....

    I have a nominal level predictor with 70 levels (its units that provide some service). I want to analyze how these units preform on an interval...

    Started by noetsi‎, 12-08-2015 03:13 PM
    qq-plot
    • Replies: 9
    • Views: 947
    12-16-2015, 01:44 PM Go to last post
  42. Control variable for panel analysis

    i am writing a paper analyzing What is the effect of corruption on Government expenditure (education,health,military and infrastructure). I have data...

    Started by arni‎, 12-16-2015 06:55 AM
    variable
    • Replies: 0
    • Views: 329
    12-16-2015, 06:55 AM Go to last post
  43. 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: 672
    12-15-2015, 09:05 PM Go to last post
  44. Logistic regression: Development of a hypothesis question

    Logistic regression: Development of a hypothesis question Hello guys, I am working on my master thesis right now. I am examining...

    Started by maxime39‎, 12-14-2015 09:18 AM
    • Replies: 2
    • Views: 475
    12-15-2015, 12:39 PM Go to last post
  45. AIC for evaluating transformations

    I was just reading an article that seemed to say they used AIC to evaluate continuous variable transformations, I guess in a logistic model. I am...

    Started by hlsmith‎, 12-04-2015 10:13 PM
    • Replies: 1
    • Views: 450
    12-15-2015, 09:39 AM Go to last post
  46. New to statistics and Binary Logistics Regression

    Dear Fellows! In search of help just found this forum and I hope there would be anyone who will help me. I am doing the Binary Logistic...

    Started by Usman Abdullah‎, 12-12-2015 12:36 AM
    • Replies: 3
    • Views: 672
    12-12-2015, 05:53 PM Go to last post
  47. What does intercept mean in regression analysis?

    I have searched it on the web but I just cant understand it. To better understand it I did one example my self. Can somebody explain me this? >...

    Started by Mr Good News‎, 12-10-2015 02:53 AM
    • Replies: 3
    • Views: 790
    12-12-2015, 11:59 AM Go to last post
  48. 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: 750
    12-12-2015, 01:34 AM Go to last post
  49. Calculate estimated median survival time (by hand)

    So I have some SAS code: proc lifereg data=surv_data; model event_time * censor(1) = var1 var2 var3 / distribution=weibull; output...

    Started by lancearmstrong1313‎, 12-10-2015 01:06 PM
    • Replies: 5
    • Views: 715
    12-11-2015, 01:05 PM Go to last post
  50. Tutorial Tobit Eviews 9

    The tobit models, Also called a censored regression models (Tutorial Tobit Eviews 9) (Guide Tobit Eviews 9) (Regression Tobit Eview 9), is designed...

    Started by OlhDt_semarang‎, 12-11-2015 12:53 AM
    (tutorial tobit eviews 9, guide tobit eviews 9, regression tobit eview 9
    • Replies: 0
    • Views: 1,059
    12-11-2015, 12:53 AM Go to last post
  51. Eviews 9 Tutorial Two Stage Least Squares

    Two-stage least squares (TSLS) is a special case of instrumental variables regression. As the name Suggests, there are two distinct stages in the...

    Started by OlhDt_semarang‎, 12-09-2015 08:46 PM
    guide eview 9, tutorial eviews 9
    • Replies: 0
    • Views: 940
    12-09-2015, 08:46 PM Go to last post
  52. Ordered Logistic Regression - proportional odds

    Hey, for a homework paper I have analyze some data. Its about how social networks are related to health. My depended var is an ordinal variable...

    Started by Hansbusch‎, 12-07-2015 07:42 AM
    • Replies: 0
    • Views: 607
    12-07-2015, 07:42 AM Go to last post
  53. Exam Question Help

    Hey Guys, After a worked solution for this previous exam question, if that's too much to ask, I understand, could you then point me to some...

    Started by IRK‎, 12-07-2015 02:15 AM
    • Replies: 1
    • Views: 429
    12-07-2015, 03:51 AM Go to last post
  54. Regression analysis with multicollinearity

    I am using jmp software for analysis... I am looking at prognostic factors that influence survival of patients with a specific type of cancer. ...

    Started by yellowsubmarine_7‎, 12-06-2015 04:55 PM
    regression analysis
    • Replies: 1
    • Views: 403
    12-06-2015, 06:05 PM Go to last post
  55. Compute and interpretation of logarithmic dependent variable

    Hello everyone, For a paper I am using a model from another paper. However, I have some difficulties determining how I should generate this...

    Started by Jantje Beton‎, 12-06-2015 01:16 PM
    • Replies: 0
    • Views: 346
    12-06-2015, 01:16 PM Go to last post
  56. Interpretation of the squared term coefficient in the presence of interaction

    Hello dear form members, Please consider the following regression model: y = a + b1x1 + b2x1^2 + b3x2 + b4x1*x2 + e, Note that x1 is (1)...

    Started by kiton‎, 11-11-2015 04:09 PM
    • Replies: 6
    • Views: 841
    12-06-2015, 11:03 AM Go to last post
  57. Rare suppressor effect?

    Hey, I recently discovered a somewhat surprising result in a hierarchical regression: I have three predictors (C M N) and one outcome (D). ...

    Started by asbjorng‎, 03-18-2014 04:40 AM
    • Replies: 2
    • Views: 743
    12-06-2015, 06:45 AM Go to last post
  58. Applying multiple regression results to new data SPSS

    My study involves testing infants at multiple time points using a number of behavioural tests. I used a multiple regression to establish which...

    Started by rdavis09‎, 12-05-2015 10:05 AM
    • Replies: 3
    • Views: 590
    12-06-2015, 04:17 AM Go to last post
  59. Integrating a continuous predictor in multiple logistic regression?

    Hi everyone, I was wondering if you could help tell me if this would be possible. I'm doing a health research project were I am using a lot of...

    Started by derivativegradient‎, 12-05-2015 10:55 PM
    • Replies: 1
    • Views: 433
    12-06-2015, 03:50 AM Go to last post
  60. Estimate a Logistic Regression Model

    Hi guys, I want to estimate a logistic regression model's equation based on observed data and get the coefficients to extrapolate further. I have...

    Started by Oberon‎, 12-03-2015 08:40 AM
    logistic, regression
    • Replies: 6
    • Views: 879
    12-04-2015, 01:18 AM Go to last post

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