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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Mediation analysis - Preacher & Hayes - could someone check what I've done please?

    I'm new to mediation analysis and have had a go with a simple model. I'd be thrilled if someone could have a look at this and let me know any issues...

    Started by Binka‎, 06-21-2013 03:06 AM
    • Replies: 0
    • Views: 3,108
    06-21-2013, 03:06 AM Go to last post
  2. The Mediation Analysis by Regression

    Hi All, Does Anyone Know a good reference to conduct the Mediation Analysis by Regression by SPSS? Many thanks, Gh

    Started by ghada8888‎, 11-30-2011 01:48 PM
    • Replies: 4
    • Views: 3,103
    12-01-2011, 12:13 PM Go to last post
  3. Heteroscedasticity

    I am new to this. I'm conducting analysis using standard multivariate regression and I've been look at some of the outputs from my model (I'm...

    Started by Novice2011‎, 02-24-2011 09:18 PM
    • Replies: 0
    • Views: 3,098
    02-24-2011, 09:18 PM Go to last post
  4. Bootstrapping regression coefficients - count DV

    Hi folks, I'm trying to plan some analyses for a project assessing how well some subscales measuring various facets of self-control (arguably...

    Started by CowboyBear‎, 05-16-2011 10:06 PM
    • Replies: 0
    • Views: 3,094
    05-16-2011, 10:06 PM Go to last post
  5. Regression with cointegrated time series data

    Hello, I am studying a predator-prey relationships using field data collected biannually over 5 years. For example, here is some abundance data: ...

    Started by marshmugger‎, 10-04-2014 05:36 AM
    autocorrelation, time series regression
    • Replies: 3
    • Views: 3,094
    10-10-2014, 01:08 PM Go to last post
  6. How do I apply the bonferroni correction in hierarchical regression?

    I am conducting a hierarchical multiple regression with 6 predictor variables (2 dichotomous, 1 continuous, 3 2-way interactions) entered over 4...

    Started by mle80‎, 07-23-2012 11:42 PM
    bonferroni correction, hierarchical
    • Replies: 0
    • Views: 3,091
    07-23-2012, 11:42 PM Go to last post
  7. Linear mixed model without random or repeated effects? GLMZ?

    Hi, I'm working on a dissertation, of which many chapters have longitudinal data and I've been using linear mixed models to estimate growth. I...

    Started by jcs691‎, 04-21-2011 09:12 PM
    generalized linear model, growth model, lmm, mixed models, multilevel model
    • Replies: 1
    • Views: 3,089
    04-22-2011, 10:18 AM Go to last post
  8. number of variables for a model

    I am now trying to build a cox model: h(t, beta) = h0(t)exp(X*beta) I have selected some variables from the data, and for a category variable, if...

    Started by pepsico007‎, 02-22-2014 11:40 AM
    cox, model, regression, survival analysis, variable selection
    • Replies: 8
    • Views: 3,087
    03-25-2014, 06:05 PM Go to last post
  9. 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: 3,086
    02-25-2016, 12:06 PM Go to last post
  10. ANOVA REML AND REGRESSION - When to use

    Dear All I am trying to get my head around when to use ANOVA when to use regeression and when to use REML. As I understand REML can be used in...

    Started by joanne1999‎, 06-27-2012 04:56 AM
    anova, correlation, regression, reml, unbalanced
    • Replies: 1
    • Views: 3,085
    06-29-2012, 12:24 PM Go to last post
  11. Finding the population mean from a sample

    For a quiz, the question I was given is "Estimate the mean weekly gross sales for all stores that spend $800 on direct mail advertising (Independent...

    Started by Thebluesclues‎, 03-31-2015 01:46 AM
    • Replies: 1
    • Views: 3,081
    03-31-2015, 08:12 AM Go to last post
  12. Error estimates with r2 in linear regression

    I have been given the results of some regression analysis, where some variable y is a function of x1 and x2. I have a r2 value for the analysis, and...

    Started by mh8782‎, 09-18-2009 04:29 AM
    • Replies: 2
    • Views: 3,080
    09-18-2009, 09:44 AM Go to last post
  13. Exp(B) or CI values with the letter "E"

    Dear all, I am running a Multinomial Log. Regression. Everything seems fine but I do not understand when Exp(B) oder CI values are like...

    Started by rezzak‎, 01-26-2017 04:42 AM
    confidence interval, exp(b), logistic regression
    • Replies: 6
    • Views: 3,080
    01-27-2017, 11:42 AM Go to last post
  14. Looking for mult. linear regression equations

    Hi - I'm having trouble finding the equations for the coefficients for a multiple linear regression with two independent variables (a=, b1=, b2=). ...

    Started by dave25‎, 11-26-2008 07:28 PM
    • Replies: 1
    • Views: 3,076
    11-26-2008, 08:13 PM Go to last post
  15. How to run Multivariate regression model w/ lags in R

    Hello everyone, great resource here! I have done some googling and searching of forums, but I cant seem to find how to run a regression like the...

    Started by Raneff‎, 10-11-2011 07:17 PM
    • Replies: 1
    • Views: 3,076
    10-15-2011, 08:40 PM Go to last post
  16. Simulated response

    Hi, I have a bunch of simulated predictors and the assumed coefficients that I'm going to use. Now I need to simulate the response Y = b0 +...

    Started by zzzc‎, 10-29-2010 05:44 PM
    • Replies: 1
    • Views: 3,074
    10-29-2010, 06:49 PM Go to last post
  17. mediation/moderation analysis in a within-subject design (repeated measure design)

    Hi, I hope you can help me with this issue: I have a within-subject design where some stimuli (positive negative or neutral) interference with...

    Started by ilaria‎, 04-25-2013 11:53 AM
    • Replies: 1
    • Views: 3,074
    04-25-2013, 12:29 PM Go to last post
  18. Error contribution from covariance in linear regression

    Hello, I try to consider the covariance in the error analysis of a linear regression with few data points. I could not find for this a worked...

    Started by Asterix‎, 07-24-2012 08:35 AM
    • Replies: 8
    • Views: 3,073
    08-02-2012, 08:07 AM Go to last post
  19. multiple regression sample

    Hello, I am undertaking a small project for some course work. I am using a multiple regression with 4 predictors. I have a histogram which doesn't...

    Started by stoner222‎, 05-24-2010 10:07 AM
    • Replies: 1
    • Views: 3,071
    05-25-2010, 12:21 PM Go to last post
  20. Question Correlation coeffcient

    I have no idea where to begin with this. If someone could guide me into the right direction, please. If the correlation coefficient is 0.97, what...

    Started by jamjammuffin‎, 03-05-2011 08:44 AM
    • Replies: 1
    • Views: 3,070
    03-05-2011, 09:23 AM Go to last post
  21. (SPSS) External validation for a linear regression model

    Hello, I am investigating relationships of continuous variables and I am aiming at getting a model that can be generalized for the study. My DV is...

    Started by wid‎, 01-02-2015 07:32 PM
    • Replies: 6
    • Views: 3,069
    01-06-2015, 06:49 AM Go to last post
  22. Ordered probit model (panel) with random effects - stata - regoprob command

    Hi, I am currently working on my masters thesis and am having some trouble. I have tried a variety of specifications and cannot seem to get...

    Started by minerals‎, 12-17-2012 04:26 PM
    • Replies: 0
    • Views: 3,068
    12-17-2012, 04:26 PM Go to last post
  23. Damage Assessment

    I apologize for this question being exceedingly vague, but I'm not sure of the correct terminology. After running a regression analysis, I have...

    Started by DCohen‎, 05-23-2008 03:17 PM
    • Replies: 4
    • Views: 3,063
    05-25-2008, 09:07 AM Go to last post
  24. Question Straightforward question about how to select Generalized Linear Model

    Hi! I have what I think is quite a straightforward problem for those in the know. I have a dependent variable measured in different subjects....

    Started by amorphia78‎, 05-18-2011 03:12 PM
    • Replies: 7
    • Views: 3,061
    05-19-2011, 02:54 PM Go to last post
  25. Is my sample too big ?

    Hello, I have a sample of 20 continuous variables, along with 3 explanatory (2 continuous and 1 dummy). I am trying to run a regression, linear...

    Started by NN_STAT‎, 03-19-2012 01:48 PM
    • Replies: 3
    • Views: 3,060
    03-26-2012, 10:55 AM Go to last post
  26. 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: 3,059
    12-12-2015, 11:59 AM Go to last post
  27. Factorial ANOVA

    I am not sure if what i am about to ask would make complete sense so let me start from the beginning. I'm doing research to measure five different...

    Started by jaanus_lallu‎, 07-11-2009 06:11 PM
    • Replies: 2
    • Views: 3,057
    07-15-2009, 06:49 AM Go to last post
  28. Multiple linear regression + QQplots problem! Includes Pics!

    Hello I want to do multiple linear regression, but one of the requirements is the residuals to be normally distributed, and I can check that with...

    Started by emelie_earlgrey‎, 11-25-2010 01:58 PM
    • Replies: 3
    • Views: 3,056
    11-30-2010, 12:34 PM Go to last post
  29. identification with ordinal independent variable

    Hi, Can you help me find the relevant literature for this problem? My regression model is: Yi=Xi*b+Ei, where Yi is income and Xi is a score, Ei...

    Started by 2282‎, 01-26-2011 03:49 PM
    • Replies: 1
    • Views: 3,056
    01-26-2011, 10:15 PM Go to last post
  30. Doubt regarding Multiple Regression

    Hi, I have some doubt in Multiple regression. I have Y as the dependent variable (mutual fund returns) I have many independent variables...

    Started by akshay_ajmani‎, 04-20-2008 03:40 PM
    • Replies: 2
    • Views: 3,055
    04-24-2008, 01:13 PM Go to last post
  31. im a newbie and i need some help with regression :(

    kayy... masters student here :wave: im so lost in my statistical analysis and my supervisor isn't really helpful :( for my model i have 3...

    Started by jkerr1‎, 01-20-2017 08:01 AM
    • Replies: 1
    • Views: 3,055
    01-20-2017, 12:30 PM Go to last post
  32. how to draw a logistic curve in word, excel etc

    Hello, I am working on a binary logistic regression and would like to insert the logistic sigmoid curve. do you know how to draw such a curve in...

    Started by t.wang21@yahoo.com.au‎, 02-14-2015 08:32 PM
    • Replies: 0
    • Views: 3,054
    02-14-2015, 08:32 PM Go to last post
  33. A good text on generalised linear models?

    Does anyone have any good recommendations on texts on generalised linear models without matrix notation? Cheers.

    Started by .ACS.‎, 03-28-2010 12:17 PM
    • Replies: 2
    • Views: 3,053
    03-28-2010, 03:01 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: 3,051
    03-12-2010, 08:15 PM Go to last post
  35. 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: 3,051
    07-19-2011, 08:27 AM Go to last post
  36. Regression Analysis w/Dummy Variable

    I am trying to run a regression on a dataset. The dataset has the regions listed as 1, 2, 3, and 4. To run a regression, do i need to recode these...

    Started by oxygen‎, 05-07-2011 08:46 AM
    dummy variable, effect, regression, relationship
    • Replies: 2
    • Views: 3,051
    05-09-2011, 10:49 AM Go to last post
  37. How exactly does MLR hold other things constant?

    Hi all, I have just signed up to the forum and I am quite inspired by the discussions. I have an intermediate level experience in statistics...

    Started by ChiSquare‎, 09-17-2013 02:32 AM
    • Replies: 2
    • Views: 3,051
    09-17-2013, 09:46 AM Go to last post
  38. using Andrew Hayes PROCESS

    Can anyone give my instructions how to use syntax with PROCESS. I want to include more than one predictor in a mediational analysis and understand...

    Started by rosenmarsh‎, 04-21-2013 07:25 AM
    • Replies: 0
    • Views: 3,049
    04-21-2013, 07:25 AM Go to last post
  39. Constant of 1: Why?

    I know that in regression (well any linear model I would assume; correct this if I'm wrong) models there's a constant of 1 added to the model. I've...

    Started by trinker‎, 09-19-2012 08:26 AM
    constant, regression
    • Replies: 7
    • Views: 3,048
    09-19-2012, 12:19 PM Go to last post
  40. Ordered Probit Diagnostics.

    Hello everyone, I'm dealing wth an ordered probit model, I need now to test the different specifications of my model, but I've not clear ideas on...

    Started by hamidreza‎, 10-30-2013 11:48 AM
    • Replies: 0
    • Views: 3,048
    10-30-2013, 11:48 AM Go to last post
  41. Help with Mutiple Regression Analysis

    Hello, I am doing my dissertation on Racial differences in Stigma related attitudes towards mentall illness. I have 200 participants, 120 from...

    Started by katerine75‎, 03-30-2011 05:24 PM
    • Replies: 4
    • Views: 3,046
    04-07-2011, 08:50 PM Go to last post
  42. Regression or Correlation?

    I have collected a range of genetic and non-genetic factors from a series of natural populations and I want to know if; a) how close the correlation...

    Started by Pen‎, 08-15-2010 07:13 PM
    • Replies: 2
    • Views: 3,042
    08-15-2010, 08:55 PM Go to last post
  43. pearson correlation in linear mixed models?

    Hi, I'm trying to understand a research article that used linear mixed models, and I think they have done something wrong. Basically, the...

    Started by williaml‎, 02-24-2009 05:50 AM
    • Replies: 0
    • Views: 3,041
    02-24-2009, 05:50 AM Go to last post
  44. I need ideas for building a "customer-centric" model

    I'm just starting down this path so forgive me for being vague and maybe not even asking the right questions. The goal: I would like to build a...

    Started by jawon‎, 02-14-2013 02:37 PM
    • Replies: 4
    • Views: 3,040
    02-19-2013, 02:46 PM Go to last post
  45. Linear regression

    Hi all I was given a data sample of 35 countries which included the country name,the number of railways and the number of airports in the given...

    Started by gloew‎, 12-19-2008 04:44 AM
    • Replies: 6
    • Views: 3,039
    12-23-2008, 06:09 PM Go to last post
  46. Lowest Mean Squared Error doesn't mean highest R^2?

    Question: Well, the title says it already. Does the lowest Mean Squared Error not automatically mean the highest R^2? Reason for asking: I'm doing...

    Started by Jolien‎, 02-06-2012 09:52 PM
    • Replies: 5
    • Views: 3,039
    02-09-2012, 12:15 AM Go to last post
  47. Did I do this correctly?

    Hi, I am trying to forecast electric power demand for natural gas in the near future. A huge driver of electric power demand for natural gas on a...

    Started by naturallight‎, 06-12-2009 06:08 PM
    • Replies: 5
    • Views: 3,038
    06-15-2009, 07:01 PM Go to last post
  48. Large coefficient problem

    Hello, i'm running linear regressions for a large cross country panel data: the simplified term is similar to y = a + b + axb. When I run...

    Started by dou‎, 05-23-2011 04:21 AM
    • Replies: 3
    • Views: 3,038
    05-23-2011, 05:20 AM Go to last post
  49. Probit Regression?

    So I was working on a Logistic Regression with binary DV, but now it turns out that the DV is actually probabilities such that they are between 0 and...

    Started by Autobot‎, 08-16-2012 09:24 AM
    2 Pages
    1 2
    • Replies: 19
    • Views: 3,038
    08-17-2012, 12:01 PM Go to last post
  50. Comparing Regression Slopes Across 3 Groups - SPSS

    I am running a simple regression with one dependent variable and one independent variable but splitting the results by group (3 groups). So, I am...

    Started by JerLon‎, 01-03-2014 06:56 PM
    • Replies: 4
    • Views: 3,036
    01-04-2014, 05:47 PM Go to last post
  51. Split sample regression vs Regression with interaction term

    Hi, I need some advice on using split sample regression versus regression with interaction term. My objective is to tell the difference, if any,...

    Started by wand‎, 12-12-2014 12:08 PM
    • Replies: 0
    • Views: 3,034
    12-12-2014, 12:08 PM Go to last post
  52. Regression Help! to predict performance using the output of questionaire

    Hi All, Somebody pl. helpe me in the brlow case, As a part of academic project, im intrested in measuring performance of purchase dpeartment in a...

    Started by Arjun‎, 02-22-2012 05:08 AM
    multiple regression, regression analysis
    • Replies: 13
    • Views: 3,033
    02-28-2012, 01:12 AM Go to last post
  53. What econometric method for macroeconomic trade data?

    Hello, I am working with a data set with trade data of one specific good of 173 countries from 1990 to 2010 in STATA. For every year and a pair of...

    Started by DanielFox‎, 09-30-2013 04:10 PM
    • Replies: 3
    • Views: 3,033
    10-01-2013, 08:57 AM Go to last post
  54. Red face regression - given model, assess probability of results

    Hi, (It's many, many years since my last foray into statistics so please be gentle..) In its simplest form my question is this: I have...

    Started by TimBom‎, 02-15-2011 09:53 AM
    probability, regression
    • Replies: 1
    • Views: 3,031
    02-15-2011, 05:12 PM Go to last post
  55. Unhappy Single parent-offspring regression

    Does anyone know how to do this? I can't find the web page I found with the full explanation:shakehead Failing that, I am carrying out a study...

    Started by charlotte22‎, 03-08-2012 03:03 AM
    • Replies: 0
    • Views: 3,031
    03-08-2012, 03:03 AM Go to last post
  56. Simple logistic regresssion question

    I am currently doing a project that requires some simple logistic regression analysis in SAS(version 9.1). For some reason my results seem to be the...

    Started by nwigg‎, 07-09-2010 09:47 PM
    • Replies: 7
    • Views: 3,030
    07-09-2010, 11:12 PM Go to last post
  57. Centering and transforming

    Hello, I'm performing a multiple regression analysis and have a question about transforming variables. I am using two IVs to see if there are...

    Started by statishtics‎, 08-27-2008 03:45 PM
    • Replies: 1
    • Views: 3,029
    08-28-2008, 05:05 AM Go to last post
  58. Stupid Q: Interpretation of slope in OLS

    Hi ppl I'm running a bunch of regressions on a series of stock returns (decimal values). One of the models is: r_t = a0 + b1*rm_t + e ...

    Started by Jonni‎, 10-05-2011 12:13 PM
    ols
    • Replies: 4
    • Views: 3,029
    10-07-2011, 12:02 PM Go to last post
  59. Autocorrelation/Regression

    Post deleted

    Started by Carlyn‎, 10-29-2011 09:06 AM
    • Replies: 4
    • Views: 3,029
    10-29-2011, 09:58 AM Go to last post
  60. ANOVA vs. principal component analysis for nonlinear analysis

    First, let me say that I am not a trained statistician by any means. Here's what I'm working on. I have a dataset with 8 factors (sample attached)....

    Started by huelskbc‎, 06-08-2014 01:49 PM
    • Replies: 2
    • Views: 3,027
    06-19-2014, 12:07 PM Go to last post

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