1. Announcement:
    Want access to a chatbox?
    Dason ‎(Devorador de queso)
+ Post New Thread
Page 9 of 73 FirstFirst 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 59 ... LastLast
Threads 481 to 540 of 4336

Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Theoretical question from Mixed Effects Random Coefficents Multilevel Linear Models

    hello people! this is kind of a theoretical question from people who've seen mixed-effects/random-coefficients/multi-level models before or have a...

    Started by spunky‎, 11-01-2011 02:15 PM
    • Replies: 6
    • Views: 2,834
    11-03-2011, 12:46 AM Go to last post
  2. Model evaluation in logistic regression

    I am doing the analysis in very recent forms of SAS (if any use that here). I ran a logistic model with a huge number of data points (some 11,000)....

    Started by noetsi‎, 11-01-2011 06:41 PM
    • Replies: 6
    • Views: 6,331
    12-02-2011, 04:14 PM Go to last post
  3. Help to control on the size effect between two groups (small vz. big)

    Hello All, I would like to have your help to solve the size effect. Specifically, I have two group of companies listed on different markets....

    Started by Stata_user‎, 11-11-2011 11:30 AM
    • Replies: 6
    • Views: 2,883
    11-12-2011, 12:44 PM Go to last post
  4. Can I trust a regression if variables are autocorrelated?

    Hello everyone! Both variables (dependent and independent) show autocorrelation effects. When I run regression and estimate the residuals, they...

    Started by Mistermishka‎, 12-03-2011 01:48 PM
    autocorrelation, regression analysis, t-statistic
    • Replies: 6
    • Views: 2,752
    12-04-2011, 10:59 AM Go to last post
  5. two ANOVAs, which to use?

    Hypothetical: you have ANOVA tables from two regressions. One is regressed on more variables than the other. The one with more variables, has a low...

    Started by el_presidente_psych‎, 12-12-2011 10:16 AM
    • Replies: 6
    • Views: 2,525
    12-13-2011, 10:12 AM Go to last post
  6. P-value in regression analysis

    How much should a p-value in a regression model be for the related variable to be considered insignificant?

    Started by X-Offender‎, 12-15-2011 10:04 AM
    • Replies: 6
    • Views: 13,604
    12-25-2011, 02:33 PM Go to last post
  7. interpreting log transformed co-effients in linear regression?

    Hello, I have 1 continuous dependent and 1 predictor variable that I've logarithmically transformed to normalise the data and their residuals for...

    Started by orangecrush‎, 12-30-2011 10:52 AM
    • Replies: 6
    • Views: 3,746
    12-31-2011, 12:03 PM Go to last post
  8. Fitting a model with Bernoulli/Binomially distributed data

    I am used to fitting data to estimate parameters in a model f(x,A) where x is my data point and A is the parameter(s) to be determined. To achieve...

    Started by sparticle10‎, 01-07-2012 08:36 PM
    bernoulli, maximum likehood, regresion
    • Replies: 6
    • Views: 2,707
    01-08-2012, 02:44 PM Go to last post
  9. Collinearity Among Categorical Variables in Regression

    Does anyone have any knowledge and/or experience in how to measure collinearity between categorical variables that have more than 2 categories in the...

    Started by jastingo‎, 01-21-2012 05:40 PM
    • Replies: 6
    • Views: 34,848
    01-25-2012, 03:52 PM Go to last post
  10. Use of regression models with centered variables

    Hi all, I'm a little confused about how to use a regression model with centered variables. I know how centering variables works for reducing...

    Started by Ytrack‎, 01-30-2012 10:37 PM
    centering variables, interaction terms, regression
    • Replies: 6
    • Views: 9,244
    02-01-2012, 12:23 AM Go to last post
  11. Building a Logisics regression model - help

    Audited ~50 patients, and collected 10 potential predictors for each (some quantitative, some indicative, all independent). Trying to develop a...

    Started by j_cocker‎, 02-09-2012 05:49 AM
    • Replies: 6
    • Views: 2,233
    02-09-2012, 06:03 PM Go to last post
  12. Linear Regression mystery

    A linear model was built, using 2 explanatory variables and 30 observations. the results were: B=(3.57, -0.18, 1.259)^t (the coefficients) ...

    Started by Yankel‎, 02-12-2012 07:44 AM
    • Replies: 6
    • Views: 2,469
    02-12-2012, 02:11 PM Go to last post
  13. I think I may finally understand, but a few questions

    Please note that you will find a simplified question below in case you do not have the time to check all of my scripts in the first two posts, but...

    Started by Dragonwalker‎, 03-20-2012 11:18 AM
    mixed-effects aic
    • Replies: 6
    • Views: 2,031
    03-21-2012, 12:28 PM Go to last post
  14. Multiple Regression theory

    Hey guys I'm not too good with the logic of multiple regression so I'd like some enlightenment on the following query. I'm running a multiple...

    Started by durantz‎, 04-03-2012 12:11 AM
    • Replies: 6
    • Views: 2,746
    04-19-2012, 05:19 AM Go to last post
  15. Alternatives to Poisson regression for overdispersed count data

    Hi all, I'm currently analyzing data from a series of behavioral experiments that all use the following measure. The participants in this...

    Started by forscher‎, 05-04-2012 11:20 AM
    count data, poisson mean/variance, poisson regression
    • Replies: 6
    • Views: 2,401
    05-04-2012, 11:52 AM Go to last post
  16. Help - coefficients have wrong signs!

    Hi guys I'm a struggling with an econometric model. I am trying to predict tenant demand for office space based on a selection of 5 lagged...

    Started by Pete‎, 05-13-2012 11:21 PM
    • Replies: 6
    • Views: 2,145
    05-17-2012, 10:36 AM Go to last post
  17. LME in SPSS and R giving different results

    I am trying to do a linear mixed model in both SPSS and R ... well, more precisely, originally I did it in SPSS, but now I want to use resampling to...

    Started by baixiwei‎, 06-08-2012 09:21 PM
    • Replies: 6
    • Views: 5,382
    06-11-2012, 04:31 PM Go to last post
  18. Multiple Linear Regression: Transformation, testing of normality, heteroscedasticity

    Hello everyone, I have a question that might be a basic one, but still I want to reassure myself that I am not on the wrong path by hearing the...

    Started by bekkiee‎, 06-27-2012 05:09 PM
    • Replies: 6
    • Views: 4,912
    06-28-2012, 09:18 AM Go to last post
  19. Sample size of Categorical Variables

    Hi, I'm running a binary logistic model that includes categorical variables. One of my main covariates has 8 categories and some of the sample...

    Started by li_mee‎, 07-09-2012 10:21 AM
    categorical variable, dummy variables, logistic regression, sample
    • Replies: 6
    • Views: 8,014
    07-23-2012, 08:17 AM Go to last post
  20. (OLS) How to get sample variance-covariance matrix of residuals?

    Consider the OLS: (1) y = a + b*x + e Where e is the error term. I understand that the population variance-covariance matrix for the residuals...

    Started by derksheng‎, 07-16-2012 07:00 AM
    • Replies: 6
    • Views: 4,967
    07-16-2012, 10:02 AM Go to last post
  21. reporting descriptive Stats when using gender in multiple regression.

    Hi, I am relatively new to research methods and using SPSS. I wanted to perform multiple regression analysis using categorical and continuous...

    Started by caoimhe‎, 07-18-2012 05:50 PM
    • Replies: 6
    • Views: 4,360
    07-19-2012, 02:39 PM Go to last post
  22. Moderated multiple regression - comparing interactions with dummy variables

    Hello - I ran a moderated multiple regression in SPSS and am having a hard time understanding the results with my dummy codes. IV - rejection...

    Started by Susanmarkunas‎, 07-19-2012 02:29 PM
    • Replies: 6
    • Views: 3,001
    08-02-2012, 12:33 PM Go to last post
  23. Newbie Logistic regression/weighted regression

    Greetings I have been reading this article http://vassarstats.net/logreg1.html and trying to understand it but I am getting confused at how they...

    Started by aivoryuk‎, 07-26-2012 03:19 PM
    • Replies: 6
    • Views: 2,370
    07-31-2012, 05:03 PM Go to last post
  24. \hat{SE}(coefficient) OR SE(\hat{coefficient})?

    Hi all, Typesetting a table at the moment and would like to know which is correct for the standard error, given the population model Y_t = a + b...

    Started by derksheng‎, 08-10-2012 09:08 AM
    • Replies: 6
    • Views: 2,577
    08-10-2012, 01:53 PM Go to last post
  25. Dependent variable issues: (i) Mild skewness and (i) Measurement error

    Cross-sectional \hat{Y}_i = a + b X_i + e_i over i \in \{1,2,...,300\}. \hat{Y}_i's were estimated in a different regression (specifically, 300...

    Started by derksheng‎, 08-16-2012 07:12 AM
    • Replies: 6
    • Views: 1,771
    08-17-2012, 10:08 AM Go to last post
  26. The claim of homoscedasticity when presenting an OLS specification

    From http://web.mit.edu/~kjforbes/www/Papers/AsianFluandRussianVirus-JIE.pdf applied econometrics paper: Why does the author claim...

    Started by derksheng‎, 08-22-2012 09:52 PM
    • Replies: 6
    • Views: 2,524
    08-22-2012, 10:12 PM Go to last post
  27. Urgent Some Reasons why variables are insignificant

    Hi guys *its urgent plz* i just wanted to know some good reasons of "why my some of the variables are insignificant in regression, As...

    Started by lamhay101‎, 09-08-2012 03:33 PM
    • Replies: 6
    • Views: 3,088
    09-10-2012, 12:39 AM Go to last post
  28. Multiple Regression Analysis Issue

    Hi everyone I have just signed up! I am currently doing a thesis & struggling with my regression model. I am examining the link between profit...

    Started by 1114368@rgu.ac.uk‎, 09-10-2012 04:09 PM
    dummy variable, help needed, hypothesis testing, multiple regression, problem
    • Replies: 6
    • Views: 2,788
    09-17-2012, 12:54 AM Go to last post
  29. binary logistics for suicide ideation and attempt

    Hi, I am doing analysis for relatively large sample of high school students (4000) of predicting lifetime usage of psychoactive substances as...

    Started by aliriza.arenliu‎, 09-10-2012 07:48 AM
    • Replies: 6
    • Views: 1,861
    09-12-2012, 05:38 PM Go to last post
  30. Multicollinearity and the 'backward' regression method

    Hello, Simple question - Am I right is assuming that you cannot use backwards,forwards or best subsets regression techniques if you have two...

    Started by bradyj2‎, 09-26-2012 09:56 AM
    • Replies: 6
    • Views: 2,776
    09-26-2012, 12:22 PM Go to last post
  31. Help! can't get normal residual, what should I do?

    Dear All, I am working on a project, and trying to explain what factors will affect the price of a product, here LOG10(PRICE) is the DV, and a few...

    Started by fcong‎, 10-05-2012 03:54 AM
    • Replies: 6
    • Views: 2,659
    10-09-2012, 12:56 AM Go to last post
  32. Projecting Data - what is the right analysis to use?

    I am in healthcare. I have a report have is providing me a unit of service on a daily basis going back three months. What I would like to do is...

    Started by psrs0810‎, 10-15-2012 08:05 AM
    • Replies: 6
    • Views: 1,829
    10-16-2012, 02:11 PM Go to last post
  33. Still a count variable?

    First off, I hope this is the right forum. I'm not sure which other one would be more appropriate for the question. I have a dependent variable...

    Started by crimsonandclover‎, 12-10-2012 05:15 AM
    • Replies: 6
    • Views: 2,065
    12-11-2012, 07:22 AM Go to last post
  34. Hierarchical Regression for Undergraduate Thesis

    Hi, I am working on an undergraduate thesis testing the effectiveness of incentives in the workplace. My director told me that I had to run a...

    Started by Catalyst48‎, 04-01-2013 07:18 PM
    • Replies: 6
    • Views: 3,378
    04-08-2013, 04:53 PM Go to last post
  35. Model fit vs. Prediction

    When it comes to regression, a lot of people are obsessed (as they should be) with how well a model fits. But what about how well the model can...

    Started by agp‎, 01-13-2013 10:27 AM
    • Replies: 6
    • Views: 2,863
    01-18-2013, 04:53 PM Go to last post
  36. HELP regression with percentage and current $

    Hi i am trying to construct a regression with inflation as my dependent variable and gdp and income as my independent, but i am not sure if it can...

    Started by faizan123‎, 01-12-2013 08:37 PM
    dependent, inflation, percentage, regression, regression analysis
    • Replies: 6
    • Views: 2,472
    01-30-2013, 10:17 AM Go to last post
  37. Determining the Standard Deviation (vice Standard Error) of regression coefficients?

    This is a question Iíve been wondering about for a while, but perhaps itís not possible or perhaps I just need a point in the right direction. I...

    Started by LKM‎, 12-24-2012 02:17 PM
    • Replies: 6
    • Views: 1,585
    01-09-2013, 11:55 AM Go to last post
  38. Interpretation of odds ratio in logistic regression for a logged variable

    Hello, How do we interpret the odds ratio in logistic regression for a logged variable? Thanks in advance.

    Started by zarasandreas‎, 02-05-2013 06:58 AM
    • Replies: 6
    • Views: 3,120
    02-08-2013, 08:43 AM Go to last post
  39. Question Categorical variable as dependent variable

    I have a categorical variable which is like: "How much do you like the sun?" 1 not at all 2 not a great deal 3 neither/nor 4 quite a lot 5...

    Started by Athinagoras‎, 04-12-2013 09:00 AM
    categorical, categorical dependent, dpendent, dummy
    • Replies: 6
    • Views: 1,982
    04-12-2013, 11:28 AM Go to last post
  40. Goodness of fit versus AIC/BIC versus pseudo R squares

    This is geared to Logistic regression I understand in theory you use these for different reasons. AIC for comparing non-nested models and goodness...

    Started by noetsi‎, 03-22-2013 05:17 PM
    • Replies: 6
    • Views: 4,083
    03-25-2013, 10:10 PM Go to last post
  41. OLS regression with dummy dependent AND independent vars

    Disregarding whether probit / logit should be used - I just want to verbally interpret results from an OLS regression where my dependent variable y...

    Started by kbmertz‎, 02-12-2013 02:12 PM
    • Replies: 6
    • Views: 2,896
    02-12-2013, 09:15 PM Go to last post
  42. Help with simple comparing regression results

    Hey guys, I am revising for an exam in a few days and I have pretty much most stuff covered other then a couple of things, and my teacher has emailed...

    Started by supergt‎, 02-04-2013 12:03 PM
    • Replies: 6
    • Views: 1,192
    02-05-2013, 01:21 PM Go to last post
  43. Normality assumption for Regression

    I have an outcome variable that is composed of one item on a 3 point scale to assess participation (none-1, member of 1 program-2, member of both...

    Started by agrig12‎, 02-05-2013 12:00 PM
    normality, regression assumption
    • Replies: 6
    • Views: 2,091
    02-05-2013, 04:04 PM Go to last post
  44. Stepwise regression

    Hi there, I wish someone can help. I will be grateful. I ran a stepwise linear regression in SPSS, and one of the signification predictors was...

    Started by Gary1‎, 04-06-2013 12:57 AM
    • Replies: 6
    • Views: 1,688
    04-11-2013, 02:50 AM Go to last post
  45. NonLinear Regression

    Hello all, I have a pretty general question: Which nonlinear regression is more reliable when you have a small sample of 50 - 70 size one...

    Started by triunk‎, 05-09-2013 08:24 AM
    • Replies: 6
    • Views: 1,582
    06-02-2013, 05:13 AM Go to last post
  46. Logistic Regression Problem - HELP!

    A local health clinic sent fliers to its clients to encourage everyone, but especially older persons at high risk of complications, to get a flue...

    Started by aweimer‎, 05-15-2013 04:53 PM
    odds, regression analysis
    • Replies: 6
    • Views: 3,549
    05-16-2013, 09:39 AM Go to last post
  47. Cross validation in SPSS

    Hi, I need to conduct cross validation of my data to check for predictive validity. This is what I did so far. I divided the sample into two...

    Started by milehigh899‎, 06-10-2013 08:34 AM
    • Replies: 6
    • Views: 13,594
    06-19-2013, 03:34 AM Go to last post
  48. Mispecification

    In theory, or as I understand theory,:p if you leave out a covariate that has a signficant effect on the DV and one IV still in the model you will...

    Started by noetsi‎, 07-02-2013 10:50 AM
    • Replies: 6
    • Views: 1,566
    07-02-2013, 01:55 PM Go to last post
  49. Unequal sample size among sub-groups: Effects on significance levels?

    Hello, I just came across a finding which I find somewhat strange: I conducted a quite simple multiple regression analysis in a dataset that...

    Started by szidel‎, 07-24-2013 01:04 AM
    regression; significance;
    • Replies: 6
    • Views: 5,438
    07-25-2013, 02:37 AM Go to last post
  50. Multivariate regression

    Hello, I am using SPSS 20.0 and am running a multivariate regression using the GLM...

    Started by rkeenan37‎, 07-23-2013 02:58 PM
    multivariate, regression, spss
    • Replies: 6
    • Views: 2,153
    07-24-2013, 12:31 AM Go to last post
  51. Validating regression models

    It is commonly suggested that you use part of the data to generate a model, and then use the rest of the data you withheld from creatng the model to...

    Started by noetsi‎, 07-30-2013 02:12 PM
    • Replies: 6
    • Views: 2,395
    07-31-2013, 09:13 PM Go to last post
  52. Ordinal Logisitc Regression with Soccer

    Hi I have made up some statistical results and would like to analyse them. 2 teams playing against eachother: Team A and Team B There are 3...

    Started by zebbie‎, 07-11-2013 08:36 PM
    • Replies: 6
    • Views: 4,347
    07-15-2013, 10:26 PM Go to last post
  53. Parameters Meaning

    What does parameters a and b represent in the equation y = A + B ln(x) ?

    Started by NSB‎, 07-15-2013 08:44 AM
    • Replies: 6
    • Views: 2,525
    07-15-2013, 05:43 PM Go to last post
  54. Analysis of promotional data by department

    Hi all, I have recently started an internship with a major UK retailer. My project is to come up with a model (and analysis) for promotions that...

    Started by cus003‎, 07-11-2013 02:44 PM
    • Replies: 6
    • Views: 1,198
    07-15-2013, 08:38 AM Go to last post
  55. Understanding coefficient of determination

    Hello everybody Im having some trouble understanding R^2. Almost everywhere, people describe it as the amount of the total variance in y that can...

    Started by RorschachDK‎, 07-16-2013 02:56 PM
    • Replies: 6
    • Views: 2,794
    07-20-2013, 07:12 AM Go to last post
  56. no r-squared calculation for models without the constant

    hi, I ran a multiple regression in Minitab and tried the model without the constant. It worked well but Minitab did not give me the r-squared value....

    Started by rogojel‎, 08-13-2013 12:52 AM
    • Replies: 6
    • Views: 2,734
    08-15-2013, 04:57 AM Go to last post
  57. How to test for Multi-collinearity among dummy explanatory variables

    Hello, Almost all the explanatory variables in my data are dummy variables and I would like to test for multi-collinearity among them. Does it...

    Started by kellyyang‎, 08-09-2013 04:04 PM
    dummy variables, multicollinearity
    • Replies: 6
    • Views: 2,868
    08-19-2013, 04:37 PM Go to last post
  58. 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: 2,175
    08-26-2013, 03:04 PM Go to last post
  59. Plot interaction effects

    Hi! I already know how to plot the predicted probabilities of binomial models without any interaction terms: predicted logit = a + bX ...

    Started by FDFS‎, 09-12-2013 10:06 AM
    binomial logistic regress, interactions, predicted probabilities
    • Replies: 6
    • Views: 7,588
    09-12-2013, 10:23 AM Go to last post
  60. Obtain the least squares estimator b1 of B1.

    Given the regression model Yi=B1Xi + ei for i=1,2,...,n. Is the estimator unbiased? So this represents the simple model with B0=0, but I'm not...

    Started by TheRealAct‎, 09-22-2013 12:09 AM
    • Replies: 6
    • Views: 3,301
    09-23-2013, 04:32 AM Go to last post

+ Post New Thread
Page 9 of 73 FirstFirst 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 59 ... LastLast

Thread Display Options

Use this control to limit the display of threads to those newer than the specified time frame.

Allows you to choose the data by which the thread list will be sorted.

Order threads in...

Note: when sorting by date, 'descending order' will show the newest results first.

Icon Legend

Contains unread posts
Contains unread posts
Contains no unread posts
Contains no unread posts
More than 15 replies or 300 views
Hot thread with unread posts
More than 15 replies or 300 views
Hot thread with no unread posts
Closed Thread
Thread is closed
Thread Contains a Message Written By You
You have posted in this thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Advertise on Talk Stats