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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Lag Length for Breusch Godfrey with Cross Sectional data

    Hey guys, I am working on my master thesis and I use STATA. I have cross-sectional data with not really a time component. However I ordered my...

    Started by maxt‎, 02-20-2014 09:55 AM
    • Replies: 6
    • Views: 6,548
    03-04-2014, 01:53 PM Go to last post
  2. Regression analysis with independant variable (error) and multiple dependant variable

    So I took a lot of data (~10000) on a machine (3D printer). For each reading, I got the error and a lot of different parameter (speed, voltage,...

    Started by Elok‎, 11-18-2014 01:25 PM
    2 Pages
    1 2
    linearity, regression analysis
    • Replies: 26
    • Views: 6,547
    11-21-2014, 08:24 AM Go to last post
  3. Do I need to treat all variables in the same way when I transform values?

    Hi, I want to carry out a Pearsons correlation to look relationships between methane flux from soil under different plantation treatments (i.e...

    Started by froglett‎, 02-16-2008 08:24 AM
    • Replies: 3
    • Views: 6,477
    02-17-2008, 02:13 PM Go to last post
  4. multiple regression- how to calculate b?

    If I'm given the means, standard deviations, and correlation coefficients of two independent variables and one dependent variable, how do I calculate...

    Started by mjtaylor‎, 02-23-2010 07:26 PM
    • Replies: 1
    • Views: 6,453
    02-23-2010, 10:03 PM Go to last post
  5. Comparison of non-linear regressions from two different samples

    Hi at all! I got a big problem during my data analysis and I’m already looking for a solution a few days. I hope somebody here can help me. I...

    Started by gadus‎, 07-19-2011 01:09 PM
    • Replies: 1
    • Views: 6,444
    07-19-2011, 08:13 PM Go to last post
  6. bonferroni correction in multivariate regression

    hi, I just read something that made me think about this, the p-values we calculate in a multiple regression have no adjustment for multiple test (...

    Started by rogojel‎, 11-06-2014 01:00 PM
    2 Pages
    1 2
    bonferroni, multiple regressiom, significance
    • Replies: 27
    • Views: 6,421
    12-01-2014, 06:34 PM Go to last post
  7. Comparing coefficients from two separate regressions

    I have done my best to do an extensive literature review to answer this question, but I've frustratingly found nothing. So I would appreciate any...

    Started by dlh8‎, 02-09-2014 08:35 PM
    3 Pages
    1 2 3
    • Replies: 33
    • Views: 6,391
    02-18-2014, 03:01 PM Go to last post
  8. 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: 6,369
    12-21-2015, 03:34 PM Go to last post
  9. Multiple Regression and SEM

    This is largely a theory question. I have been unhappy with my professor's attempt to answer this question for me so I want to get others' opinions....

    Started by krytellan‎, 12-04-2010 03:37 AM
    • Replies: 2
    • Views: 6,364
    12-05-2010, 08:11 PM Go to last post
  10. Logistic regression vs multiple regression

    I have a 3 predictor variables that I am using to predict participation rates. How do I determine whether to use logistic regression or multiple...

    Started by Cohen's monkey‎, 07-15-2009 06:20 PM
    • Replies: 1
    • Views: 6,347
    07-15-2009, 07:54 PM Go to last post
  11. Dependent variable as a percentage-which model to use

    Hello, I am dealing with a dependent variable which is a percentage, so which regression model would be better in this case? The histogram and...

    Started by pff‎, 01-07-2011 06:59 AM
    • Replies: 1
    • Views: 6,341
    01-09-2011, 02:08 PM Go to last post
  12. Heteroscedasticity in logistic regression

    Hi! I have a question regarding heteroscedasticity in binary logistic regression, and would be most grateful for any kind of feedback. I am...

    Started by majkel‎, 08-20-2010 08:48 AM
    • Replies: 0
    • Views: 6,339
    08-20-2010, 08:48 AM Go to last post
  13. Panel Data Regression (xtreg) STATA

    Hello everyone, I'm running a pooled tiem series regression with random effects. It runs fine and I'm having a problem interpreting results. I'm a...

    Started by berry16‎, 09-15-2011 09:24 PM
    • Replies: 0
    • Views: 6,339
    09-15-2011, 09:24 PM Go to last post
  14. confidence interval/f-tests

    Basically Fe (iron) is the x variable/predictor, and MDD loss is the y variable/response in minitab. 1. I generated some data (regressoin...

    Started by gomes.‎, 02-21-2011 06:42 PM
    • Replies: 1
    • Views: 6,335
    02-23-2011, 01:01 PM Go to last post
  15. 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: 6,320
    12-02-2011, 04:14 PM Go to last post
  16. Calculating deviance residuals and dispersion for a count model

    Hello, Im working with a poisson model to look at relationships between fish and habitat. I have multiple-pass count data (the same pool...

    Started by kirkby‎, 09-24-2012 10:19 AM
    deviance, dispersion, quasi-poisson
    • Replies: 2
    • Views: 6,293
    10-02-2012, 07:42 PM Go to last post
  17. Question Testing suppression with SEM

    hey everybody Using multiple regression analysis on my data, I've discovered a suppression effect. Now I started analyzing the same data with...

    Started by piweli‎, 09-04-2008 04:30 AM
    • Replies: 1
    • Views: 6,292
    09-30-2008, 10:27 AM Go to last post
  18. question~sum of (residual*Xi)

    Hi, I know it might sound stupid but I do not understand why the fact that sum of residuals equals zero implies the sum of (residual i*Xi)...

    Started by dandelion‎, 01-26-2013 01:04 AM
    • Replies: 4
    • Views: 6,290
    01-27-2013, 03:18 AM Go to last post
  19. Single Negative Beta in Multiple Linear Regression

    Hi everyone I'm having trouble interpreting a single negative regression coefficient in a multiple linear regression. The situation is as follows:...

    Started by lord_yo‎, 04-05-2012 02:56 AM
    • Replies: 1
    • Views: 6,282
    04-05-2012, 03:57 AM Go to last post
  20. Dummy Variables and Multiple Regression

    Hi, if someone could make this clear for me, would be much appreciated.. Is it possible to create a dummy variable for more than one outcome. ...

    Started by janeduluth‎, 03-20-2008 11:50 AM
    • Replies: 3
    • Views: 6,279
    03-20-2008, 03:09 PM Go to last post
  21. Help Regarding Linear Regression in SPSS (R Square help)

    Hi, this is my situation for a Human Resources research project. I have 100 respondents and 14 questions. All the questions are simple tick...

    Started by vipinkr3‎, 05-09-2011 05:15 AM
    • Replies: 3
    • Views: 6,268
    05-12-2011, 12:58 PM Go to last post
  22. Standard error of regression

    I am writing a robust regression algorith in Python and using the linregress method from SciPy/NumPy. linregress returns the b0, b1, r^2, p_val, and...

    Started by strimp099‎, 09-16-2010 12:18 PM
    • Replies: 2
    • Views: 6,255
    09-16-2010, 02:35 PM Go to last post
  23. Logarithmic regression in SPSS

    Hi, does anyone know how to use non-linear logarithmic regression in SPSS? I have one DV and one IV. Thanks

    Started by graphicsgriffin‎, 06-27-2011 10:39 AM
    • Replies: 0
    • Views: 6,248
    06-27-2011, 10:39 AM Go to last post
  24. Pooling data for multiple regression

    Hi All, :wave: I have a few issues with some collected data. I have been collecting attitude/perception questionaires using likert scales...

    Started by funkymunky‎, 05-12-2006 01:13 PM
    • Replies: 2
    • Views: 6,218
    05-13-2006, 08:43 AM Go to last post
  25. Multiple regression help needed

    I am struggling with the concept of a forced entry linear multiple data regression. Could someone please explain what they are, why they are used,...

    Started by southerngirl920‎, 09-05-2006 04:03 PM
    • Replies: 1
    • Views: 6,213
    09-05-2006, 08:27 PM Go to last post
  26. Unhappy Regression Help for Masters thesis

    ..........

    Started by Parikshit Luktuke‎, 08-23-2011 09:49 PM
    • Replies: 4
    • Views: 6,207
    08-24-2011, 12:55 AM Go to last post
  27. Using pooled OLS when running a model with panel data?

    How bad is it to use pooled OLS instead of fixed effects when you have 7 years of panel data? From what I have understood, the risk is that the...

    Started by Eric_B‎, 06-18-2014 04:23 AM
    • Replies: 1
    • Views: 6,204
    07-12-2014, 06:46 AM Go to last post
  28. 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: 6,204
    10-01-2015, 01:46 PM Go to last post
  29. Difference-in-differences analysis - STATA syntax for binary data

    Dear Friends, I am doing Difference-in-differences analysis with repeated cross-sectional data. I have both continuous and binary data. I found...

    Started by karen_marti‎, 05-24-2012 03:50 AM
    • Replies: 0
    • Views: 6,198
    05-24-2012, 03:50 AM Go to last post
  30. 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: 6,198
    03-29-2016, 03:45 AM Go to last post
  31. Question Vote Fraud in Iowa??? Tell me how this is statistically possible please!

    NOTE: UPDATED, PLEASE SEE MY COMMENT #26 ON PAGE TWO. Ok... Please be easy on me... One, I'm new here. Two, it has been a long time...

    Started by presence‎, 02-21-2012 10:10 PM
    2 Pages
    1 2
    • Replies: 27
    • Views: 6,194
    10-08-2012, 01:53 PM Go to last post
  32. Variance Extracted and Multicollinearity in Structural Equation Model

    Hello, I am a new user here, and I am quite in need of help with regards to statistical problems. :) I really appreciate it if anyone can help me. ...

    Started by Iori‎, 01-20-2012 12:56 PM
    ave, lisrel, multicollinearity, sem, variance extracted
    • Replies: 0
    • Views: 6,165
    01-20-2012, 12:56 PM Go to last post
  33. Question calculating sample size needed by future studies having got my Logistic Regression

    Help anyone? I have downloaded Gpower 3, and seemingly found the option: under test family: z tests statistical test: logistic regression ...

    Started by Freya_77‎, 07-18-2012 01:13 PM
    logistic regression, sample size
    • Replies: 11
    • Views: 6,161
    07-23-2012, 08:59 AM Go to last post
  34. Lmer Output/: variable re-levelling

    Morning/Evening all I'm having a bit of a time getting the LME4 package to list ALL of my IVs, rather than all-1. By way of example, here is my...

    Started by drewmac‎, 09-04-2011 04:18 PM
    binomial, lmer, logistic regression, r package
    • Replies: 7
    • Views: 6,143
    09-06-2011, 06:56 AM Go to last post
  35. Question HELP NEEDED! Running a negative binomial regression in SPSS

    Hey everyone, I'm new here, working on my master's thesis in strategic public relations, and am in over my head with statistics. I need to run a...

    Started by dutchinrichmond‎, 02-03-2013 09:50 PM
    • Replies: 1
    • Views: 6,143
    02-03-2013, 11:49 PM Go to last post
  36. Method to calculate the most accurate method of prediction

    Hi, this is my first post, and I'm entirely self taught re statistics, so go easy on me. :) I want to calculate which of several prediction...

    Started by joshAU‎, 10-12-2010 04:30 AM
    • Replies: 1
    • Views: 6,138
    10-12-2010, 01:04 PM Go to last post
  37. Fixed Effects Common Panel Regression versus GMM estimation

    Hi, I have estimated my model using the Fixed Effects Common Panel method and this seems to work fine. I get an R2 of .90 However, I am now in...

    Started by Herbert‎, 02-18-2011 07:43 AM
    common panel, fixed effects, gmm
    • Replies: 0
    • Views: 6,133
    02-18-2011, 07:43 AM Go to last post
  38. Please help, how do i interpret this?

    okay the regression formula that i have worked out is y=12559.7477 + 4265.7566X i have to discuss the size, sign, significance and meaning of this. I...

    Started by danswe3‎, 03-26-2011 04:09 PM
    • Replies: 1
    • Views: 6,114
    03-27-2011, 08:49 PM Go to last post
  39. Panel Data Analysis, Help Urgently Needed! Fixed & Random effects, Fama MacBeth etc.

    Hi, I have the following panel dataset: 11 years of annual data with a total of 250 observations. The panel is highly unbalanced, in the beginning...

    Started by Sascha93‎, 11-29-2011 04:34 PM
    fama macbeth regression, fixed effects, panel data, random coefficient, random effects
    • Replies: 0
    • Views: 6,114
    11-29-2011, 04:34 PM Go to last post
  40. Linear regression on seemingly linear data, but residual plot is a parabola?

    So I did a linear regression on x y data that seemed very linear, but the residual plot was a a clear parabola. Next I did a 2nd order polynomial...

    Started by saveourpens‎, 11-26-2011 02:32 PM
    • Replies: 2
    • Views: 6,082
    11-27-2011, 05:56 AM Go to last post
  41. Fixed term is (Intercept) --Dredge function

    Hi, i'm currently running a glm model in R and have attempted to use the following code: Model:...

    Started by arl139‎, 02-05-2015 09:52 PM
    dredge, glm, logistic regression
    • Replies: 2
    • Views: 6,075
    02-05-2015, 11:08 PM Go to last post
  42. The standardized and non standardized coefficients gives diff results

    Hi. Some coworkers ran a regression and used first the beta to analyze the strength of the independent variables in a regression. However all the...

    Started by Kframnes‎, 03-09-2012 04:28 PM
    • Replies: 7
    • Views: 6,067
    03-09-2012, 05:21 PM Go to last post
  43. Conducting a White's test in SPSS

    PLEASE anyone?? I'm really struggling here... Hi everyone, I've seen a tutorial on youtube on how to conduct a white's test in spss. I was...

    Started by Charlotte_‎, 07-10-2015 05:02 AM
    • Replies: 1
    • Views: 6,065
    07-10-2015, 05:44 AM Go to last post
  44. How can this be true [linear versus logistic regression]

    This comes from a government study that was used to generate something of great importance, funding and related factors for a major government...

    Started by noetsi‎, 01-07-2017 01:31 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 6,050
    01-15-2017, 02:51 PM Go to last post
  45. Zero-inflated continuous independent variables

    Are there ways of handling zero-inflated continuous independent variables?

    Started by doh_ramey‎, 11-01-2012 08:22 AM
    • Replies: 4
    • Views: 6,038
    11-01-2012, 10:44 AM Go to last post
  46. Best way to normalize a non linear trend.

    Using a regression performed in Excel, I have data that can be described by the equation y = 4*(x^0.5). The x values range from 1000 to 5000. I...

    Started by FishMan‎, 06-20-2011 09:06 PM
    • Replies: 2
    • Views: 6,032
    06-20-2011, 11:48 PM Go to last post
  47. Logistic regression with significant coefficient but .000 Exp(B)

    I am getting an output for a binary logistic regression I can't quite figure out how to interpret. It is a 0/1 binary logit, with 10 numeric IVs....

    Started by mylesg‎, 01-02-2014 05:34 PM
    logistic regression
    • Replies: 9
    • Views: 6,028
    01-03-2014, 04:32 PM Go to last post
  48. MLR: R2 and RMSE in assessing quality

    How would one judge the quality of a multiple linear regression model if the model had a high value for cross-validated R2 but also a high value for...

    Started by Grateful‎, 04-26-2006 06:35 PM
    • Replies: 1
    • Views: 6,000
    04-26-2006, 08:00 PM Go to last post
  49. Collinearity

    Hi, Is there any possibility that if colinearity exists between two or more DV variables in a regression analysis, the regression analysis to be...

    Started by alexandros__23‎, 01-16-2011 03:33 PM
    • Replies: 3
    • Views: 5,985
    01-17-2011, 08:00 AM Go to last post
  50. Inverse prediction from Binary Logistic Regression

    Hi! I was wondering how to get the inverse prediction from Binary Logistic Regression, that is calculating x (and CIs) given p. Now, I know that x...

    Started by gianmarco‎, 12-05-2013 04:40 AM
    • Replies: 3
    • Views: 5,980
    12-06-2013, 05:40 PM Go to last post
  51. Is R squared number valid when forcing a slope on regression fit line?

    When I plot my log transformed data and do a regression fit, I get a slope of 3.37 and a r-squared of 0.96. My professor wants me to "force" a slope...

    Started by SeatOFpants‎, 02-15-2012 03:07 PM
    • Replies: 12
    • Views: 5,978
    02-16-2012, 02:06 PM Go to last post
  52. Question Multiple Regression analysis for dependent variable with multiple dimensions..

    Hi All, with respect to Multiple Regression Analysis, is it possible to regress 6 dependent variable dimensions against 1 independent variable? ...

    Started by sachitha‎, 06-16-2010 12:55 AM
    • Replies: 2
    • Views: 5,969
    06-16-2010, 01:56 PM Go to last post
  53. Question What does the correlation matrix for a multiple regression analysis contain?

    hi :wave: how do u doing? I have this quiz tomorrow and I need answer for one quistion If any one of u guys knew the answer u just type it ...

    Started by walol‎, 05-27-2011 06:59 AM
    • Replies: 1
    • Views: 5,968
    05-27-2011, 12:34 PM Go to last post
  54. Include dummy variables (time series) for industries

    Hi all, I have a question about including dummy variables in mijn analysis for master thesis. In my analysis I investigate the relationship...

    Started by kleon‎, 04-11-2013 09:41 AM
    • Replies: 0
    • Views: 5,965
    04-11-2013, 09:41 AM Go to last post
  55. Interpreting log-linear coefficients

    Hi there, I am fairly new to regression and have been set the task of modelling a data set in the form ln(y) = bx1 +bx2 +bx3 +bx4 +bx5 + e. In...

    Started by adam15‎, 04-18-2012 06:37 AM
    • Replies: 3
    • Views: 5,960
    06-22-2012, 04:19 AM Go to last post
  56. multiple regression - mix of ordinal/continuous/dichotomous independent variables?

    I need to find relationships between one continuous dependent variable (hourly salary) and a number of ordinal (e.g. language skills which are ranked...

    Started by minnie2‎, 03-08-2010 03:52 AM
    • Replies: 0
    • Views: 5,947
    03-08-2010, 03:52 AM Go to last post
  57. Pros and cons of using partial least square regression

    Hello guys, I have a computational model of a single cardiac cell. With it I have generated a data matrix consisting of columns of inputs (e.g....

    Started by milo‎, 08-18-2010 12:05 AM
    • Replies: 0
    • Views: 5,940
    08-18-2010, 12:05 AM Go to last post
  58. Multiple Regression Analysis of a time series

    Hello everyone! I'm trying to use multiple regression analysis of a time series, but I've run into a problem interpreting the data. First, I've...

    Started by minchazo‎, 02-04-2008 05:48 PM
    • Replies: 0
    • Views: 5,936
    02-04-2008, 05:48 PM Go to last post
  59. Double check sample calculation from pilot study

    I am really a neophyte to statistics but am in the middle of a research project and would appreciate someone checking my calculations. I ran a...

    Started by lph2005‎, 02-23-2009 01:35 AM
    • Replies: 3
    • Views: 5,928
    03-01-2009, 09:28 PM Go to last post
  60. Regression using gram-schmidt orthogonalization

    Hello dear members, Hoping again to solicit some help from the knowledgeable members here, I thought I'd come to you with this question. I'm...

    Started by Link‎, 12-05-2010 12:33 PM
    • Replies: 7
    • Views: 5,914
    12-07-2010, 11:31 PM Go to last post

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