1. Announcement:
    Want access to a chatbox?
    Dason ‎(Devorador de queso)
+ Post New Thread
Page 11 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 29 30 61 ... LastLast
Threads 601 to 660 of 4341

Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Data Transformations in Multiple Regression

    I have a non-normal distribution for the residuals I'm testing for a multiple regression--what's the best course of action to take? If I transform...

    Started by Pachy‎, 06-03-2011 08:05 PM
    • Replies: 1
    • Views: 4,350
    06-03-2011, 09:07 PM Go to last post
  2. Simple Linear Regression with GUM Uncertainties

    I would appreciate it if someone could suggest some references that discuss how to formally incorporate measurement uncertainties (as calculated per...

    Started by Tom La Bone‎, 07-23-2009 04:31 PM
    • Replies: 0
    • Views: 4,349
    07-23-2009, 04:31 PM Go to last post
  3. Differences Between ANOVA and multiple regression

    What are the differences between ANOVA and multiple regression? If I want to figure out if there exist impacts of one variable on the other, which...

    Started by lztoby‎, 08-30-2010 09:26 PM
    • Replies: 1
    • Views: 4,345
    08-30-2010, 09:58 PM Go to last post
  4. statistics problem

    I am stumped on how to go about making the test statistic for this problem. Any help would be appreciated. Thank you. Suppose that you would like...

    Started by rambo67‎, 06-11-2008 09:17 PM
    • Replies: 7
    • Views: 4,337
    06-12-2008, 05:56 PM Go to last post
  5. Transformed Interactions in Regression

    Hi all, I have a quick (but surprisingly difficult) question to ask regarding transformed variables in an interaction term when conducting...

    Started by mandy_a41‎, 03-24-2009 10:33 PM
    • Replies: 3
    • Views: 4,334
    03-25-2009, 07:42 PM Go to last post
  6. Regression Estimated variance and Chi-square distribution

    Hi all * If i have a data set and I model it using linear regression I estimate intercept, slope and variance Ymodel=a+bx and the...

    Started by saaagar‎, 11-21-2010 04:48 AM
    • Replies: 0
    • Views: 4,332
    11-21-2010, 04:48 AM Go to last post
  7. glm in R - coding issue

    Dear all, I have been attempting to use a generalized linear model in R to determine if any variation existed between the different feeding...

    Started by craigpoconnell11‎, 12-04-2012 12:11 PM
    • Replies: 2
    • Views: 4,330
    12-04-2012, 02:22 PM Go to last post
  8. Physiology grad student needing some help - linear regression through the origin

    Hi all. I'm a PhD student in physiology, and I seem to be suffering from mild amnesia when it comes to statistics. My old course notes are out of my...

    Started by Pascal‎, 01-04-2010 09:45 AM
    • Replies: 6
    • Views: 4,327
    01-06-2010, 04:43 AM Go to last post
  9. Simple command in SAS for regression with a large number of covariates?

    I'm a new poster and I searched before creating this thread, so I hope I'm not raising a common question that is constantly being answered here. ...

    Started by Janus‎, 03-01-2011 10:54 PM
    • Replies: 4
    • Views: 4,325
    03-02-2011, 04:25 PM Go to last post
  10. [Probit] Can I be confident in my results even with a poor Goodness-of-Fit test?

    I am running a probit analysis on a data set with about 1000 cases, predicting probability of college graduation by a set of college institutional...

    Started by DavidBill‎, 02-18-2011 01:08 PM
    • Replies: 3
    • Views: 4,324
    02-18-2011, 03:27 PM Go to last post
  11. Continuous Moderator and DV and categorical IV (dummy coded) Help please!!!

    I ran an experiment recently and now I'm trying to work out whether either of the covariates (anxiety or avoidance) interact with the effect of any...

    Started by LoopyLou‎, 06-11-2012 10:55 AM
    • Replies: 1
    • Views: 4,324
    06-11-2012, 03:28 PM Go to last post
  12. help with Linear regression with nfl stats please

    Hey guys, just wondering if I could get some help with the best way to use my data. After the challenge system was introduced into the nfl in 1999...

    Started by rbskee‎, 04-08-2011 09:41 AM
    • Replies: 3
    • Views: 4,320
    04-09-2011, 01:19 AM Go to last post
  13. Interpretation of MANOVA

    Hello everyone, Forgive me for my ignorance, but I have a quick basic question. When conducting a MANOVA (Using JMP) the output gives me values...

    Started by kron3007‎, 11-29-2010 01:54 PM
    • Replies: 1
    • Views: 4,313
    11-29-2010, 01:55 PM Go to last post
  14. F-Test Interpretation and Log-Linear?

    Hey. I have found this a very difficult subject to self-teach and unfortunately I have not found my teachers particularly helpful. Sorry about the...

    Started by Jak‎, 04-16-2012 02:10 PM
    • Replies: 9
    • Views: 4,313
    04-27-2012, 01:40 PM Go to last post
  15. t-test for categorical predictors in regression WRONG!?

    hey people... so i am sitting in my theory of GLMs class... and the prof just said something i had never ever heard in my life... which is that, in...

    Started by spunky‎, 10-26-2011 12:16 PM
    • Replies: 9
    • Views: 4,312
    10-26-2011, 01:08 PM Go to last post
  16. Interpreting the regression RMSE when responses are measurements with known SD

    Hi all, I'm fitting a simple regression model (Y = a + bX) where my responses are measurements whose standard deviations, SD, are available....

    Started by fgg‎, 07-19-2014 09:04 PM
    • Replies: 8
    • Views: 4,312
    07-29-2014, 07:11 PM Go to last post
  17. Help with Regression Analysis

    It's been a while since I've done a regression analysis. I'm trying to run a multivariate regression analysis in Excel to determine whether or not...

    Started by cglinn‎, 07-12-2011 09:31 AM
    • Replies: 9
    • Views: 4,305
    07-12-2011, 04:34 PM Go to last post
  18. Multinomial Logit vs Dummies vs Ordinal Logit

    Hello everybody, I need help with the following: I would like to conduct a survey, where my dependent variable would be a discrete, nominal...

    Started by EgZeKuToR‎, 11-18-2010 03:22 PM
    • Replies: 0
    • Views: 4,299
    11-18-2010, 03:22 PM Go to last post
  19. Which regression model to use with skewed & ordinal data?

    I'm a bit stucked and just wondering about which regression technic to use with my dependent variable at hand. Respondents were asked to provide a...

    Started by Chris_J‎, 03-19-2013 10:13 AM
    • Replies: 3
    • Views: 4,297
    03-19-2013, 04:16 PM Go to last post
  20. Using OLS vs Probit/Logit to estimate a threshold

    Suppose you're a meteorologist and want to predict whether tomorrow the temperature will exceed 20 degrees. Your boss gives you data where t is...

    Started by aboluk‎, 07-03-2012 06:57 PM
    • Replies: 7
    • Views: 4,290
    07-04-2012, 04:21 PM Go to last post
  21. Ordinal regression vs Linear regression

    Here's the situation: I have a categorical dependent variable (3 categories), and 3 continuous explanatory variables. Say I perform an ordinal...

    Started by annie_81‎, 03-29-2011 02:02 AM
    • Replies: 0
    • Views: 4,278
    03-29-2011, 02:02 AM Go to last post
  22. Question Can "infinite" values be used in regression?

    Hello, I am analyzing a series of plots along a recovery gradient, using "time since disturbance" as a continuous variable. I want to see how...

    Started by GiganD‎, 04-03-2008 03:21 PM
    • Replies: 4
    • Views: 4,277
    04-07-2008, 01:50 PM Go to last post
  23. Questions on which stats to use & sigmaplot for Logistic Regression

    Hi Everyone, This is my first time on the forum. I have been having problems deciding on what test to use for my data and how to input the data...

    Started by Bennice‎, 03-04-2013 07:59 PM
    • Replies: 5
    • Views: 4,273
    03-05-2013, 12:09 PM Go to last post
  24. Question Effect Coding: p-value of reference category

    Hi, I fit a regression model with effect coded variables. I'm well aware of how to compute the value for the reference category but I have...

    Started by Chris25‎, 02-18-2013 03:39 AM
    effect coding, p-value, regression, standard deviation
    • Replies: 2
    • Views: 4,264
    02-19-2013, 03:38 AM Go to last post
  25. Lack of Fit Test

    Hi, Can someone please help me derive the expression for E(MSLF) -- Expected Value for the means squares lack of fit (MSLF) Thanks.

    Started by nubyra‎, 12-21-2011 02:12 PM
    • Replies: 4
    • Views: 4,258
    12-27-2011, 01:15 AM Go to last post
  26. Unhappy is it possible for all variables results in no significant value?

    i need help on my multiple linear regression statistics assignment on conclusion and recommendation part... my problem is all the independent...

    Started by tonynk9‎, 08-14-2010 01:12 PM
    • Replies: 0
    • Views: 4,257
    08-14-2010, 01:12 PM Go to last post
  27. Problem with mixed effects model with binary data

    Hi guys, I have a question about logit mixed effects model. I tried to use lmer to fit a model with binary dependent variable (Yes or No), a...

    Started by pydbl‎, 01-09-2011 11:44 PM
    binary, complete separation, glmer, lmer, mixed effects
    • Replies: 2
    • Views: 4,256
    01-10-2011, 01:00 AM Go to last post
  28. Regression approach to ANOVA

    I am trying to fit regression for some categorical variables. I have two treatment A(3 levels) and B (2 levels) and their interaction. The output...

    Started by lovedieer‎, 03-03-2008 11:17 PM
    • Replies: 6
    • Views: 4,254
    03-07-2008, 04:10 PM Go to last post
  29. Non-Significant Categorical Predictor in Logistic Regression

    hi: In the logistic regression modeling one of my predictor is categorical with 4 categories. We use 3 categories considering one as reference...

    Started by navibs‎, 02-02-2012 09:21 AM
    • Replies: 2
    • Views: 4,253
    02-02-2012, 10:25 AM Go to last post
  30. Pooled cross sectional data: How to test for and handle autocorrelation?

    Hi, 1) My goal: I am making a difference-in-difference analysis to estimate the development in political efficacy for a certain group of people...

    Started by MHansen‎, 06-23-2012 09:50 AM
    autocorrelation, durbin-watson, lagged effects, pooled cross section
    • Replies: 0
    • Views: 4,252
    06-23-2012, 09:50 AM Go to last post
  31. Nested or Repeated measures analysis for ecology data?

    This is a refinement of an earlier question I asked. ...

    Started by Cheffy‎, 03-01-2013 12:16 PM
    • Replies: 3
    • Views: 4,249
    03-18-2013, 11:03 AM Go to last post
  32. Poynomial Regression through the origin

    I am trying to program in SQL a polynomial regression of degree two with a zero intercept. I can't seem to find the appropriate literature on this...

    Started by coling‎, 07-24-2012 03:43 PM
    • Replies: 8
    • Views: 4,235
    07-24-2012, 05:50 PM Go to last post
  33. Linear regression analysis proof question

    Hi, can anyone help me please in writing a proof to the following linear regression problem? I have spent countless hours trying to solve it but am...

    Started by tskhor‎, 08-01-2010 10:27 AM
    • Replies: 2
    • Views: 4,233
    08-02-2010, 07:56 AM Go to last post
  34. Confidence Intervals for predicted values

    Hu Guys, I hope you could provide hints to put me on the right track. A scholar has devised a device to measure the momentum of inertia (Mi) of...

    Started by gianmarco‎, 10-21-2013 05:02 AM
    • Replies: 10
    • Views: 4,233
    11-05-2013, 01:17 PM Go to last post
  35. How to test significance of the mean of multiple OLS regressions (Jensen's Alpha).

    Hi. Im working on a paper on mutual fund performance, using Jensen's Alpha to measure performance. Ri-Rf=a+b(Rm-rf)+ei Time series regression,...

    Started by Vogelius‎, 03-26-2012 08:56 AM
    • Replies: 1
    • Views: 4,224
    04-17-2012, 06:23 AM Go to last post
  36. Multivariate Regression vs Canonical Correlation

    I know the difference between correlation and regression, however, I'm a little confused with the difference between Canonical Correlation (CCR) and...

    Started by jonathaned55‎, 11-12-2012 11:09 PM
    canonical correlation, multivariate regression
    • Replies: 1
    • Views: 4,220
    11-17-2012, 06:55 PM Go to last post
  37. Panel Data and model specification

    Sorry to ask questions which may be obvious to many, but I am just starting out with Stata and econometrics so if anyone could help me I would really...

    Started by tko778‎, 01-21-2011 01:25 PM
    • Replies: 1
    • Views: 4,219
    01-22-2011, 12:23 AM Go to last post
  38. Calculation of effect size in Hierarchical regression

    Hello there, I have conducted a hierarchical regression with two steps. Statistical significance resulted form the first step, as the second...

    Started by YunaniQA‎, 05-29-2013 06:37 AM
    effect size
    • Replies: 3
    • Views: 4,216
    05-29-2013, 11:02 AM Go to last post
  39. Segmented Regression Sample Size

    Hello, I am using Segmented Regression (SegReg*) to compare proportional occurrence (Y) of 18 species vs. proportional habitat cover (X) to...

    Started by sherwood043‎, 12-11-2010 06:45 PM
    • Replies: 0
    • Views: 4,215
    12-11-2010, 06:45 PM Go to last post
  40. Conditional Regression Analysis in SPSS

    Hi all, Im trying to do a matched paired analysis on some data. I have two groups of children, matched by age and sex. Each pair has been given a...

    Started by tommecrow‎, 02-23-2014 03:37 AM
    • Replies: 1
    • Views: 4,215
    02-23-2014, 04:09 PM Go to last post
  41. Overdispersions and logistic regression

    Note the following comment on this: I have never been clear what the difference between grouped and ungrouped data is. My elements, notably...

    Started by noetsi‎, 09-19-2014 09:26 AM
    • Replies: 8
    • Views: 4,212
    09-20-2014, 08:04 AM Go to last post
  42. Comparing curves fitted to two quadratic regressions

    Hello, I have constructed two calibration curves, i.e. plotting known concentrations against response. Both of these sets of data seem to fit a...

    Started by Ri89‎, 03-08-2012 07:19 AM
    curves, quadratic regression
    • Replies: 2
    • Views: 4,207
    03-28-2012, 07:30 PM Go to last post
  43. beta = r, so can beta be greater than 1.0?

    I have a basic question, but it's been a long time since I learned regression. I'm having trouble reconciling these three facts: (1) In a...

    Started by bruin‎, 11-11-2013 03:40 PM
    • Replies: 13
    • Views: 4,197
    11-14-2013, 01:15 AM Go to last post
  44. Correcting for omitted variable bias without including problem variables?

    Hi All, I asked something similar earlier but I don't think I was very clear (so I will try again). I want to run a regression, let's say it is...

    Started by Salohcin‎, 06-26-2013 01:12 PM
    • Replies: 3
    • Views: 4,196
    06-26-2013, 02:55 PM Go to last post
  45. centered polynomials

    in a model involving Y= B0 + B1X1 + B2X2^2, how does centering the model affect the parameters. why does the hypothesis test associated with B2...

    Started by floriandotti‎, 11-23-2010 12:09 AM
    • Replies: 1
    • Views: 4,195
    11-23-2010, 01:01 AM Go to last post
  46. Multiple Regression: Dependent Variable has sub-categories

    I want to be able to predict Total Spare Part Costs (Y). There are 2 types of spare parts contributing to the total costs. Let Spare Part 1 = SP1...

    Started by m007836‎, 07-17-2011 08:30 PM
    • Replies: 4
    • Views: 4,192
    07-31-2011, 06:07 PM Go to last post
  47. Dummy coding in linear regression, with an interaction

    I am using linear regression with a categorial variable (3 levels of stress manipulation) and continuous variables. I am unsure how to dummy code my...

    Started by Liz4218‎, 10-06-2013 03:08 AM
    • Replies: 1
    • Views: 4,192
    10-30-2013, 09:29 PM Go to last post
  48. How to conduct a repeated measures regression with ordinal outcome variable?

    Hi, I am trying to predict an ordinal variable (success: 0, 1, 2, 3). I have 3 predictor variables I want to include in the analyses together with...

    Started by Sausage‎, 12-04-2010 04:03 PM
    • Replies: 0
    • Views: 4,188
    12-04-2010, 04:03 PM Go to last post
  49. Question How can I handle an independent variable with many zeros?

    Hey everyone! I'm currently working on my Master's thesis and am slightly stuck in the analytical part. For my research, I am trying to figure out...

    Started by student9090‎, 06-18-2013 08:57 AM
    • Replies: 3
    • Views: 4,188
    06-19-2013, 08:25 AM Go to last post
  50. Robust regression

    Hi, I am trying to use robust regression instead of ordinary least squares since my data set has a lot of outliers but I don't know if I have...

    Started by akhil123‎, 03-28-2011 09:18 PM
    • Replies: 0
    • Views: 4,180
    03-28-2011, 09:18 PM Go to last post
  51. Parameter estimation - which method?

    I am new to parameter estimation. It is not clear for me which method is the best to use to estimate parameter of my model: my statistical model has...

    Started by hase‎, 06-11-2012 11:01 AM
    • Replies: 14
    • Views: 4,177
    07-18-2012, 04:06 AM Go to last post
  52. Logistic regression - help needed

    Hi, I want to predict a dependent variable from a set of (3) factor scores, as independent variables. The problem is that one of those scores...

    Started by Kara‎, 06-18-2011 05:21 AM
    • Replies: 2
    • Views: 4,172
    06-19-2011, 01:42 AM Go to last post
  53. complex survey analysis and weight variables in proc surveylogistic

    I am analyzing the effect of Calcium on Obesity in adults based on the NHANES dataset. I have two questions. First, since I am combining two day...

    Started by sabina9‎, 04-18-2011 10:26 AM
    • Replies: 1
    • Views: 4,169
    04-18-2011, 11:05 AM Go to last post
  54. Weighted Least Squares & VIF - SPSS questions

    I was hoping someone could help me understand a problem I am having. I frequently use weighted least squares, however I do not estimate the weights...

    Started by AnalystNYC‎, 04-19-2011 10:17 AM
    • Replies: 0
    • Views: 4,163
    04-19-2011, 10:17 AM Go to last post
  55. statistical analysis of global warming/fossil fuels

    Hello, I have to write a paper for a class (environmental management). I've been thinking quite a bit about global warming/weather trends and how...

    Started by Analytics‎, 01-11-2008 08:14 PM
    • Replies: 0
    • Views: 4,157
    01-11-2008, 08:14 PM Go to last post
  56. So many variables--how to approach this?

    I'm working on a project about depression as a possible side effect of a particular medication. The people who take this drug also tend to have...

    Started by brooklynqueen‎, 08-10-2010 10:31 PM
    • Replies: 9
    • Views: 4,157
    08-11-2010, 05:24 PM Go to last post
  57. problem with independent variables

    Hello, I need your advice. I have a data file, with a binary dependent variable and some independent ones. For each person (case), there were 3...

    Started by WeeG‎, 08-19-2010 04:26 AM
    • Replies: 4
    • Views: 4,155
    08-20-2010, 09:12 PM Go to last post
  58. dummy coding help for cat variables

    I have a questionnaire with 28 items - 20 items are Likert attitude questions. In fact there are 5 main variables (constructs?) being measured by 4...

    Started by ehb23‎, 12-06-2006 07:26 PM
    • Replies: 0
    • Views: 4,153
    12-06-2006, 07:26 PM Go to last post
  59. How to develop a regression expression using factor scores?

    Hi, I have four factors for fourteen variables. I want to develop a regression expression for a dependent variable using the correlated variables....

    Started by aceprod51‎, 01-21-2007 03:22 PM
    • Replies: 1
    • Views: 4,148
    01-23-2007, 10:05 PM Go to last post
  60. generalized least squares

    Hello. How can I modify least square linear regression method in order to fit a straight line to data with non gaussian error (such as Levy, Poisson...

    Started by skan‎, 07-29-2007 01:21 PM
    • Replies: 6
    • Views: 4,148
    08-02-2007, 05:53 AM Go to last post

+ Post New Thread
Page 11 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 29 30 61 ... 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