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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Articles/information on robust regression?

    Hi, I am a little confused as to what methods there are for "robust" regression. I thought it was an actual type (as in logistic, linear, etc),...

    Started by statn00b‎, 02-23-2012 09:05 AM
    • Replies: 5
    • Views: 2,396
    02-26-2012, 07:32 PM Go to last post
  2. Question Asasociation between two series of measurements

    I have series of (metric) lab variables measured in a group of patients, with once daily measurements over 20 days, and I would like to investigate...

    Started by AVoelp‎, 05-22-2013 04:36 AM
    • Replies: 5
    • Views: 1,326
    05-23-2013, 06:04 AM Go to last post
  3. ask: no aid dummy in panel data using stata

    Dear all, I would like to ask the utilization of dummy variable in stata. Well, here is my model y=beta1 lnx1(1,x1)+beta2 nox1+beta3 lnx2...

    Started by iqbalkritingsekali‎, 06-17-2013 11:39 PM
    double log, dummy variable, econometrics, no aid dummy, stata
    • Replies: 0
    • Views: 1,205
    06-17-2013, 11:39 PM Go to last post
  4. Assessing model fit

    I have built two logistric regression models: one forced entry model that features some highly insignificant variables, and a stepwise one that,...

    Started by daniel_ev‎, 07-09-2012 11:37 AM
    logistic regression
    • Replies: 1
    • Views: 1,567
    07-09-2012, 12:48 PM Go to last post
  5. Unhappy Assessing SSE(sum of squared errors)?

    Hello, I can't figure out how to solve this question: Consider these summary statistics for a random sample: Mean of x=20 Mean of y=10...

    Started by Enricus‎, 03-24-2013 12:04 AM
    • Replies: 3
    • Views: 2,043
    03-24-2013, 03:27 PM Go to last post
  6. Assessing the Fit of a model: multiple regression

    Hi Guys I'm not sure whether this question belongs to this section or in SAS. I'm using SAS to create a regression model for a response variable...

    Started by excelmac‎, 09-29-2013 03:32 PM
    • Replies: 9
    • Views: 1,878
    10-09-2013, 08:41 AM Go to last post
  7. Assessing the relationship between a continuous variable and categorical variables

    Hello! I have a problem for which I have trouble finding a solution. I would like to assess the relationship between a continuous dependent...

    Started by CheersToStata‎, 09-09-2013 11:32 AM
    • Replies: 2
    • Views: 2,938
    09-09-2013, 12:20 PM Go to last post
  8. Assignment

    Please may you help me answer the question, I'm stuck. Thanx!! A property analyst is examining the relationship between the City council’s...

    Started by natra‎, 02-22-2016 06:43 AM
    • Replies: 2
    • Views: 2,043
    03-08-2016, 04:22 AM Go to last post
  9. Assistance on Analysing Likert scale data

    Hi all, I'm looking for some advice on data analysis. I can't see the wood for the trees now at this stage. I'm doing a study of the effect of...

    Started by Robotron6000‎, 04-02-2012 10:00 AM
    • Replies: 0
    • Views: 1,750
    04-02-2012, 10:00 AM Go to last post
  10. Assistance with Linear Regression Model (Model is Not Full Rank)

    Hello all, I'm currently doing a project in a computer statistics class of mine, and I have run into some potential trouble. I'll admit, I'm not...

    Started by BarnabyJones21‎, 11-29-2014 02:44 PM
    • Replies: 0
    • Views: 1,176
    11-29-2014, 02:44 PM Go to last post
  11. Association between categorical and numerical variables using R

    Hi, I am new to this forum so please be kind :-). Not sure if this belongs in 'R'. I will describe my problem as good as I can. First of all I am...

    Started by MasterStudent‎, 02-25-2016 07:43 AM
    chi square, general linear model, r commander
    • Replies: 5
    • Views: 3,082
    02-25-2016, 12:06 PM Go to last post
  12. Unhappy assumption of independence

    Why is it important that cases are independent in regression (especially, logistic regression)? By "independent" i mean that observations under...

    Started by reductico‎, 06-09-2010 09:35 AM
    • Replies: 5
    • Views: 16,702
    06-09-2010, 02:04 PM Go to last post
  13. assumption of linearity in the logit and transformation of continuous IV

    Hello, I am doing logistic regression in spss for my phd research. Testing the assumption of the linearity in the logit I included in the analysis...

    Started by Catherina‎, 05-11-2011 04:28 AM
    • Replies: 0
    • Views: 3,786
    05-11-2011, 04:28 AM Go to last post
  14. Assumption of Linearity not fulfilled - what to do?

    Dear All, I want to conduct a moderated hierarchical regression. I have 3 IVs and one moderator. I started to test the underlying assumptions of...

    Started by bluemuly‎, 09-17-2014 06:02 AM
    • Replies: 1
    • Views: 3,437
    09-17-2014, 02:53 PM Go to last post
  15. Assumptions for adding indicator variable

    Hi, can you please tell me the assumptions that are needed to be satisfied before adding indicator variables? I have searched on internet but I...

    Started by SadieKhan‎, 04-27-2011 12:25 PM
    • Replies: 2
    • Views: 3,150
    04-27-2011, 03:07 PM Go to last post
  16. Assumptions of Linear Regression and Time Series

    Greetings, I am kind of confused while reading topics of Linear Regression and Time Series. There are bunch of assumptions to infer proper...

    Started by cozgenc‎, 01-18-2012 08:20 AM
    • Replies: 1
    • Views: 9,447
    01-18-2012, 12:05 PM Go to last post
  17. Assumptions of logistic regression

    Anyone know a good authoritative source for the assumptions of logistic regression? They differ obviously from OLS and I have not found a good source...

    Started by noetsi‎, 11-22-2011 01:43 PM
    4 Pages
    1 2 3 ... 4
    • Replies: 47
    • Views: 81,469
    11-29-2011, 07:40 PM Go to last post
  18. Assumptions of Quantile Regression

    Is equal variance an assumption of quantile regression? Does quantile or median regression have any assumptions? Thanks.

    Started by zeloc‎, 12-11-2011 02:23 PM
    • Replies: 1
    • Views: 3,257
    12-12-2011, 02:07 AM Go to last post
  19. Assumptions of time series regression

    I was wondering what the equivalent assumptions to Gauss Markov are for time series regression. Some are clearly different. Stationarity is not (as...

    Started by noetsi‎, 07-12-2016 12:44 PM
    • Replies: 2
    • Views: 1,613
    07-12-2016, 05:36 PM Go to last post
  20. Assumptions that underlie a regresion model

    Are there any statistical tests that i can use to evaluate whether the assumptions for the regression model are being met? The assumptions i want...

    Started by katlego‎, 09-23-2011 08:45 PM
    residual plots, residuals
    • Replies: 4
    • Views: 3,129
    09-26-2011, 11:52 AM Go to last post
  21. Asymmetric confidence bands in nonlinear regression

    Hi, I would like to know the formula for asymmetric confidence bands in nonlinear regression. Figure 6 on this webpage is exactly what I'm looking...

    Started by craigsooman‎, 10-19-2011 02:43 PM
    • Replies: 0
    • Views: 2,554
    10-19-2011, 02:43 PM Go to last post
  22. ATE - teffects vs xtlogit

    Hi. I am measuring the average treatment effect on two groups, using STATA´s teffects regression adjustment estimator. The STATA output reports...

    Started by Kristian Korbu‎, 07-22-2014 06:15 AM
    • Replies: 0
    • Views: 2,048
    07-22-2014, 06:15 AM Go to last post
  23. Attempting the Impossible? Please help!

    I've been tasked with conducting a statistical analysis and have encountered a few potentially significant problems. As its been quite some time...

    Started by carriedinterest‎, 07-07-2009 08:21 AM
    • Replies: 0
    • Views: 2,427
    07-07-2009, 08:21 AM Go to last post
  24. AUC below 0.5

    Hi, I am calculating area under the curve (AUC) values for the individual independent variables of a conditional logistic regression model. I am...

    Started by teapot‎, 06-16-2016 10:50 PM
    • Replies: 3
    • Views: 1,591
    06-20-2016, 12:23 PM Go to last post
  25. Unhappy Autocorrelation in nonlinear models

    Good morning! I'm running a random effects logit (xtlogit with stata) and cannot find how to test for autocorrelation. Has anyone an idea? Things...

    Started by Andy‎, 09-11-2012 02:12 AM
    • Replies: 0
    • Views: 1,522
    09-11-2012, 02:12 AM Go to last post
  26. Autocorrelation Remedy Help

    For my bachelor thesis I need to regress historical stock price with earning per share. My data consist of eleven years period with yearly...

    Started by ardinea‎, 07-21-2012 11:12 AM
    • Replies: 1
    • Views: 1,941
    07-24-2012, 07:30 AM Go to last post
  27. Question autocorrelation test?

    should i perform an autocorrelation test such as DW test to a cross-sectional data? what actually autocorrelation means for cross-sectional data?...

    Started by anwarlatif‎, 06-23-2012 02:52 AM
    • Replies: 0
    • Views: 1,319
    06-23-2012, 02:52 AM Go to last post
  28. Autocorrelation/Regression

    Post deleted

    Started by Carlyn‎, 10-29-2011 09:06 AM
    • Replies: 4
    • Views: 3,028
    10-29-2011, 09:58 AM Go to last post
  29. Question Automated multivariate nonlinear regression

    I have 4,300 lines of data that looks like this in each column: IV1, IV2, IV3, DV1, DV2 It has five columns, three are IVs, two are DVs. How can I...

    Started by Chicken325‎, 02-26-2011 03:06 PM
    multiple regression
    • Replies: 1
    • Views: 2,922
    02-26-2011, 04:36 PM Go to last post
  30. Automatically finding relationships between 3 or more variables

    Hello, Total newbie here - but I'm hoping someone can help me out. I have finished running a multiple regression analysis and have my results....

    Started by Tzo‎, 10-02-2015 07:37 PM
    • Replies: 0
    • Views: 792
    10-02-2015, 07:37 PM Go to last post
  31. Post Autoregression model implementation

    Hello forum users! I have a urgent question :/ I need to implement an AR(1) Model into Oxmetrics. Optimize my parameters using the OLS method. ...

    Started by Enies‎, 01-22-2014 01:20 PM
    ar model, ols, oxmetrics
    • Replies: 0
    • Views: 1,574
    01-22-2014, 01:20 PM Go to last post
  32. Autoregression w/ Point Process?

    I would like to generate something akin to an ARX model of a quasi-sinusoidal continuous time series, but my exogenous variable is a binary (0-or-1)...

    Started by flaming_zamboni‎, 09-27-2011 09:00 PM
    • Replies: 0
    • Views: 1,622
    09-27-2011, 09:00 PM Go to last post
  33. Average trendline for multiple trendlines plus standard deviations

    I have data and linear trendlines for 10 subjects. So I have 10 slopes and 10 y-intercepts. If I wanted to plot the average and +/- st deviation...

    Started by ivoryowl‎, 10-16-2012 07:01 PM
    multiple trendlines
    • Replies: 0
    • Views: 1,601
    10-16-2012, 07:01 PM Go to last post
  34. Averages vs Totals in Multiple Regression - Simple Question

    Say in a multiple regression, I have three independent variables, each of which is the sum of 10 values (for ex: annual scores each year for a...

    Started by tge496‎, 03-12-2010 05:29 PM
    • Replies: 1
    • Views: 3,042
    03-12-2010, 08:15 PM Go to last post
  35. Averaging LASSO coefficients for repeated random partitioning of data

    Is it reasonable to average LASSO coefficients from repeated reshuffling of training/test sets? Suppose I randomly divide my data into testing &...

    Started by raco‎, 02-14-2014 05:33 PM
    lasso, regression coefficients, regularized
    • Replies: 0
    • Views: 1,316
    02-14-2014, 05:33 PM Go to last post
  36. Averaging x and y before fitting regression model

    Hi everyone:wave::wave::wave: I have faced problem in my research when i fit a regression model my question is can i make moving average for...

    Started by abod1409‎, 04-14-2015 02:34 PM
    • Replies: 0
    • Views: 1,804
    04-14-2015, 02:34 PM Go to last post
  37. Avoiding spurious regression in meta-regression using stationary variables like GDP

    I have been reading everything I can get my hands on about spurious regression but can't seem to definitively find out what is best in regressing...

    Started by samuelle‎, 11-12-2014 11:10 AM
    gdp, meta-regression, spurious, stationary variables
    • Replies: 0
    • Views: 1,660
    11-12-2014, 11:10 AM Go to last post
  38. B Coefficient

    I'm having some difficulty making sense of a logistic regression. I think I have the interpretation right based on a university tutorial on how to...

    Started by jle‎, 02-12-2015 12:40 AM
    • Replies: 5
    • Views: 1,865
    02-13-2015, 08:41 AM Go to last post
  39. Back-calculating correlation coefficient for transformed data

    Hi everyone, This is my first post on this board so please excuse if I sound like a n00b. I am doing a meta-analysis on plant physiology studies,...

    Started by qdread‎, 03-20-2012 01:08 PM
    • Replies: 0
    • Views: 2,139
    03-20-2012, 01:08 PM Go to last post
  40. back-transformation of logit-transformed behavioral data

    Hello, I am posting with hopes that someone can assist me in making sure that I am back-transforming my data correctly. I have behavioral data...

    Started by rtoaff‎, 01-29-2012 02:27 AM
    • Replies: 12
    • Views: 14,157
    01-31-2012, 02:15 AM Go to last post
  41. backtranformation of log transformed data

    Hi forum, I've a simple question that has probably a difficult answer. In a lineair regression of the form: log(y) ~ x resulting in an...

    Started by koen‎, 07-25-2006 09:39 AM
    • Replies: 2
    • Views: 4,526
    04-08-2017, 02:58 PM Go to last post
  42. Backward Binary logistic regression: effect of the "indicator" value (first vs. last)

    I have performed a backward binary logistic regression in SPSS (20). The dependent variable is nominal, and there are 5 explanatroy variables, of...

    Started by fruppel‎, 02-25-2014 06:17 AM
    backward, binary logical regression, indactor, spss
    • Replies: 0
    • Views: 1,652
    02-25-2014, 06:17 AM Go to last post
  43. backward stepwise regression: all variables eliminated

    Hello everyone, Initially I perfomed a standard logistic regression (forced enter method in spss) on my data (small sample): n= 85 and 8...

    Started by noob‎, 08-20-2013 03:57 PM
    • Replies: 2
    • Views: 5,138
    08-21-2013, 08:38 AM Go to last post
  44. backwards stepwise multiple regression, collinearity. Rejected paper.

    Hi helpful people! My research paper was recently rejected and some of the feedback I received was in relation to the statistical tests done/not...

    Started by potatopatch‎, 09-04-2017 05:33 PM
    collinearity, stepwise regression
    • Replies: 13
    • Views: 551
    09-06-2017, 05:53 PM Go to last post
  45. Baseball Regression Issue (STATA)

    Hello!! I am glad a site exists like this where peole can compare information on this growing field. Baseball analytics is huge these days and I...

    Started by Rankor‎, 04-28-2013 07:05 PM
    baseball, regression, stata
    • Replies: 0
    • Views: 2,136
    04-28-2013, 07:05 PM Go to last post
  46. Baseball stat fans?

    I play on online Baseball simulator that uses numerous ratings and processes them through an engine which spits out a box score and results. I...

    Started by cledussnow‎, 01-14-2013 01:41 PM
    • Replies: 7
    • Views: 1,202
    01-15-2013, 04:46 PM Go to last post
  47. basic 3 year's observations forecasting - need for tips and feedback

    Hello everybody, I need advice about simple forecasting strategies and wondered if anyone here could kindly give me feedback. In each of the four...

    Started by parsec2011‎, 08-08-2014 01:46 AM
    • Replies: 0
    • Views: 1,032
    08-08-2014, 01:46 AM Go to last post
  48. basic econometrics

    explain the differences for the following paired terms with appropriate examples. (1)log-lin model and lin-log model (2)cross sectional data and...

    Started by waily‎, 03-18-2013 10:38 AM
    • Replies: 2
    • Views: 2,538
    03-18-2013, 11:11 AM Go to last post
  49. 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: 1,336
    10-23-2016, 10:24 PM Go to last post
  50. Unhappy Basic Help with Multiple Regression Results

    Can you help? I'm trying to run a basic multiple regression in SPSS 18. I have a series of measurements made in cm, and I want to find the...

    Started by Medical‎, 10-18-2010 12:30 PM
    • Replies: 0
    • Views: 2,069
    10-18-2010, 12:30 PM Go to last post
  51. Basic information on binary logistic regression

    Can anyone point me in the direction of a webpage that provides an overview of the binary logistic regression technique and ideally instructions on...

    Started by chrisquinze‎, 07-19-2011 06:09 AM
    • Replies: 1
    • Views: 3,043
    07-19-2011, 08:27 AM Go to last post
  52. Basic multiple regression question

    Sorry, should've probably specified linear regression. I was given a data and ran a proc corr on it in sas. As you can see, x1 through x5...

    Started by downthesun01‎, 11-16-2011 01:00 AM
    • Replies: 7
    • Views: 2,303
    11-25-2011, 05:22 AM Go to last post
  53. Basic Regression Question (Total Sum of Squares)

    What is the total sum of squares (regression) when Y is constant? Is it zero, thus explained fully by your model because it is a straight line? But...

    Started by FromHonoluluWithLove‎, 04-24-2013 10:46 PM
    regression, total sum of squares, y is constant
    • Replies: 0
    • Views: 1,140
    04-24-2013, 10:46 PM Go to last post
  54. Basic regressionquestion

    Hi, I am currently learning ML algorithms and implementing in R. I have a some basic questions. 1.)I know that linear regression an statistical...

    Started by chakravarty456‎, 03-28-2016 05:16 AM
    • Replies: 2
    • Views: 1,359
    03-28-2016, 10:59 AM Go to last post
  55. Basic Unbiased/Consistency Estimator Definition question

    Hi As below, i was wondering if someone could be kind enough to define these to points with reference to the diagram. I understand the...

    Started by liydg‎, 08-26-2013 01:14 PM
    • Replies: 6
    • Views: 2,179
    08-26-2013, 03:04 PM Go to last post
  56. Bayes Rule to summarize time series cumulative Logistic Regression output

    Hello, I have been struggling to find a definitive answer to what should be a very simple question. I have a logistic regression model that...

    Started by dwienke‎, 10-23-2012 10:49 AM
    • Replies: 0
    • Views: 959
    10-23-2012, 10:49 AM Go to last post
  57. Bayesian approach for logistic regression models? (the case of low-count cells)

    so... now that i'm a PhD student my advisor wants me to help out people with their projects. as fate may have it, the same problem has arisen both in...

    Started by spunky‎, 12-09-2013 04:26 PM
    2 Pages
    1 2
    • Replies: 15
    • Views: 5,482
    12-10-2013, 01:54 PM Go to last post
  58. Bayesian GLM with missing data

    Just while I'm on a roll with simple questions... I'm using MCMCregress {MCMCpack} to do a Bayesian regression in R. My dataset has a good chunk...

    Started by CowboyBear‎, 07-31-2014 06:57 PM
    • Replies: 3
    • Views: 1,988
    07-31-2014, 09:23 PM Go to last post
  59. Bayesian multiple regression issue in R

    I am attempting to generate a multiple regression model using JAGS on R and my results deviate substantially from MCMCregress and lm. I ran out of...

    Started by micdhack‎, 02-03-2016 05:09 PM
    • Replies: 0
    • Views: 762
    02-03-2016, 05:09 PM Go to last post
  60. Bayesian regression

    it's a actually an informatics math related question. But i want to start here to get a first opinion. As a software engineer and cryptographer, I'm...

    Started by ethomas‎, 01-07-2015 01:16 PM
    • Replies: 0
    • Views: 1,056
    01-07-2015, 01:16 PM Go to last post

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