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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Relationship between 2 variables & 1 dependant

    Hi all, My wife is busy with an assignment that is even giving me grey hair. She needs to determine the relationships between 2 variables and 1...

    Started by kiepie‎, Today 12:40 PM
    • Replies: 3
    • Views: 60
    Today, 02:53 PM Go to last post
  2. Fixed Effects Regression - Dependent Variable Issue

    Hi all, I am currently running a fixed effects model in Stata, and have a question regarding how to specify my dependent variable. So I have...

    Started by Magnus MMJ‎, Yesterday 05:12 PM
    • Replies: 3
    • Views: 94
    Today, 12:37 PM Go to last post
  3. Linear Regression with effect size changes of categorical variables with continuous

    I have three categorical variables (disked, herbicide, Lands) each is binomial (0,1). For example, within disked there is a group in which it does...

    Started by farre1pd‎, Yesterday 12:45 PM
    ancova, categorical, continuous, group differences
    • Replies: 3
    • Views: 80
    Yesterday, 02:21 PM Go to last post
  4. Multiple mediation analysis

    I have a question about multiple mediation analysis. I had originally designed a study to see if four separate variables (M1, M2, M3 and M4) mediate...

    Started by B B Jinx‎, 07-20-2015 12:25 PM
    • Replies: 5
    • Views: 132
    Yesterday, 08:32 AM Go to last post
  5. Ordinal predictor variable in regression

    When you have a nominal categorical predictor you just create dummies. With say a five level ordinal predictor (the classical case would be a likert...

    Started by noetsi‎, 07-26-2015 03:11 PM
    • Replies: 1
    • Views: 88
    07-26-2015, 05:51 PM Go to last post
  6. Correcting for endogeneity a panel count model with interactions using IV approach

    Hello dear forum members, My study examines the impact of online (a) reputational status, and (b) reviews on physicians’ performance, as proxied...

    Started by kiton‎, 07-25-2015 09:52 AM
    endogeneity, instrumental variables, interaction terms, panel count model
    • Replies: 0
    • Views: 105
    07-25-2015, 09:52 AM Go to last post
  7. 1)Test multicollinearity b4/after Stepwise Log Regress? 2)Final Equatn 3)Model Select

    Hi all, I need to perform logistic regression for my study. Pretty new to it but have read up on it and have tried it on SPSS. I would like to...

    Started by atomic_beans‎, 07-20-2015 11:49 PM
    logistic regression, model selection, multicollinearity, spss, stepwise
    • Replies: 8
    • Views: 321
    07-25-2015, 06:13 AM Go to last post
  8. Logistic Regression: how can I handle IVs which are correlated?

    Hello, I am planning to fit a Logistic Regression model (binary) and I would like to use (among several IVs) 4 predictors that turn out to suffer of...

    Started by gianmarco‎, 07-24-2015 02:19 AM
    • Replies: 7
    • Views: 165
    07-24-2015, 09:26 AM Go to last post
  9. Concerns with using a mix of Continuous and Categorical IVs in Logistic Regression?

    Before I get into it, I want to make clear that I'm not a statistics guy. I'm doing what I can to get through a thesis and stumbling my way forward....

    Started by OkieSpladle‎, 07-22-2015 12:33 PM
    • Replies: 7
    • Views: 178
    07-23-2015, 12:30 PM Go to last post
  10. Comparing probability scores from logistic models

    Hi, I want to be able to compare the probability scores from 2 different logistic regression models. I think it is not appropriate to directly...

    Started by msaifk‎, 07-22-2015 11:27 PM
    • Replies: 1
    • Views: 89
    07-23-2015, 07:08 AM Go to last post
  11. Linear regression alayses with interaction effect of two categorical variables

    Dear all, I have to run a linear regression analysis in SPSS with an interaction effect of two categorical variables: - Modality (audio,...

    Started by nadinv‎, 07-22-2015 04:12 PM
    regression
    • Replies: 3
    • Views: 122
    07-23-2015, 04:35 AM Go to last post
  12. Interaction between a time-varying and a time invariant variable? (Panel regression)

    Hi everyone, I have got a question regarding the specification of interaction effects in panel regressions (fixed effects within estimators). I...

    Started by numerator‎, 07-22-2015 07:44 AM
    interaction, moderation, panel, regression, time invariant
    • Replies: 1
    • Views: 68
    07-22-2015, 08:26 AM Go to last post
  13. Using residuals as predictors to adjust for effects of covariate in regression

    I was wondering if this is appropriate: I have two predictors that are highly correlated and collinear, x1 and x2, and are both associated with Y....

    Started by Disvengeance‎, 07-21-2015 02:14 PM
    • Replies: 4
    • Views: 120
    07-21-2015, 03:50 PM Go to last post
  14. adding skewness and kurtosis to CAPM - regression

    Suppose I have a set of monthly returns of a stock, monthly 'market' returns and some risk free rate for lets say 10 years. Performing an usually OLS...

    Started by Deusdeorum‎, 07-21-2015 03:55 AM
    capm, regression analysis
    • Replies: 0
    • Views: 88
    07-21-2015, 03:55 AM Go to last post
  15. Panel probit model (RE) -- inclusion of time invariant variables

    Hello forum members! Consider a panel probit model to be estimated (say, in Stata code): -xtprobit y x1 x2 x3 x4, re- where, y is binary...

    Started by kiton‎, 07-20-2015 06:07 PM
    • Replies: 0
    • Views: 77
    07-20-2015, 06:07 PM Go to last post
  16. Principal Component Analysis - global R2

    Hi, I've extracted the principal components from a set of k studentized variables. I can compute the cumulative R2.i.e the percentage of...

    Started by vm294‎, 07-20-2015 04:53 AM
    pca
    • Replies: 1
    • Views: 112
    07-20-2015, 10:49 AM Go to last post
  17. Reviewer questioning my regression in my article, need advice on how/what to respond

    Hi guys. Iíve submitted my first article and a reviewer is questioning my stats. I never had this problem before and I need your help! Quick...

    Started by nightale‎, 07-16-2015 03:57 PM
    • Replies: 14
    • Views: 272
    07-20-2015, 10:46 AM Go to last post
  18. Selecting Variables in Regression Analysis

    Hello, I am working on generating a regression analysis, but I am not sure if my setup is accurate. I would like to predict how long it will take...

    Started by mjgarrin‎, 07-17-2015 01:57 PM
    • Replies: 3
    • Views: 269
    07-20-2015, 07:55 AM Go to last post
  19. (SPSS) Linear Mixed Model?

    Dear all, I would appreciate any advice on the correct use of a Linear Mixed Model (in SPSS) A short description of the research Iím doing: In...

    Started by JdH‎, 07-18-2015 07:27 AM
    • Replies: 0
    • Views: 121
    07-18-2015, 07:27 AM Go to last post
  20. Finding Significant Difference between Linear Regressions

    Hello. I have a scatterplot with two different sets of data plotted. Each individual set has its own linear regression formula and R-squared...

    Started by danhageman‎, 07-16-2015 11:31 PM
    outlier detection, p-value, regression analysis, scatter plot, significance
    • Replies: 0
    • Views: 125
    07-16-2015, 11:31 PM Go to last post
  21. Exclamation How to use Likert Scale data in regression analysis?

    My knowledge about statistics is elementary and I would really appreciate some help or suggestions in solving my current problem. I am doing a...

    Started by irtiza104‎, 07-14-2015 03:40 PM
    • Replies: 9
    • Views: 327
    07-16-2015, 07:57 PM Go to last post
  22. Simple question : Understanding an interaction - Gender as a moderator

    I wanted to see if gender has a moderating effect on the interaction between the age at divorce and trust in relationships. I centered the age at...

    Started by Charlotte_‎, 07-12-2015 04:01 AM
    • Replies: 3
    • Views: 250
    07-15-2015, 03:57 PM Go to last post
  23. Preference Share + Regression

    I have conducted a conjoint survey evaluating several combinations of user and devices, with the end goal of calculating a preference share of each...

    Started by Julia18‎, 07-15-2015 02:35 PM
    • Replies: 5
    • Views: 124
    07-15-2015, 03:37 PM Go to last post
  24. Simple question - regression, order effects, experiment

    Hi there, I did a simple experiment whereby people in counterbalanced order received a measurement scale measuring their emotions and then...

    Started by Portland‎, 07-08-2015 01:52 PM
    • Replies: 2
    • Views: 324
    07-10-2015, 07:42 AM Go to last post
  25. Experiment Design Help please

    Hi All I have used a Central Composite Design (CCD) for my experiments, where I have three Factors (A, B, c) and each Factor has five values. I have...

    Started by Dlair‎, 06-21-2015 08:16 AM
    • Replies: 1
    • Views: 203
    07-10-2015, 07:35 AM Go to last post
  26. 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: 106
    07-10-2015, 05:44 AM Go to last post
  27. How to calculate sum of square of quadratic term

    Hi, I have obtain a quadratic model from central composite design (DOE) During ANOVA procedure I have some solution to compute "manualy" the...

    Started by luc38‎, 07-10-2015 05:03 AM
    anova table
    • Replies: 0
    • Views: 86
    07-10-2015, 05:03 AM Go to last post
  28. Creating predicted probabilities from a categorical IV in a logit (with syntax)

    So. I have a binary outcome that is begin predicted by a race IV which has 4 categories. here is my output: LOGISTIC REGRESSION VARIABLES...

    Started by jsayn‎, 07-09-2015 02:24 PM
    • Replies: 2
    • Views: 135
    07-09-2015, 06:10 PM Go to last post
  29. predictor 2 on the causal pathway between predictor 1 and outcome

    Hi: This is re-post of a something I put in the 'statistics' forum a while ago. There were 75 views but no responses, so I thought I try again in...

    Started by sigmundo‎, 07-08-2015 07:17 AM
    causal pathways
    • Replies: 5
    • Views: 154
    07-09-2015, 10:02 AM Go to last post
  30. Is it alright to use quantity as dependent variable in absence of price information?

    Good afternoon, My panel data set includes information about unit sales, sales volume and other figures but the wholesale/retail price. I'd like...

    Started by RUB‎, 07-09-2015 07:16 AM
    • Replies: 1
    • Views: 109
    07-09-2015, 09:49 AM Go to last post
  31. SAS GLIMMIX subject specific estimates

    I am trying to analyze a dataset where each subject has 12 repeated measures (quarterly, over 3 years). I want to extract subject specific estimates...

    Started by aisley‎, 07-08-2015 08:52 AM
    glimmix, longitudinal study, mixed effects model, negative binomial model, sas
    • Replies: 3
    • Views: 128
    07-08-2015, 01:41 PM Go to last post
  32. Corporate Governance Explanations effects on Firm Value

    Hi all, I'm quite new to statistics and need some guidance for my dissertation. The University is messing up with my supervisor resulting in me...

    Started by Vislian‎, 06-23-2015 09:54 AM
    • Replies: 1
    • Views: 141
    07-08-2015, 08:51 AM Go to last post
  33. Help creating my first logistic Regression model

    Hi everyone, I`m new here, and new in the stats world, and i have several questions and need for help on how to proceed. First, what i`m doing...

    Started by Perdido‎, 07-06-2015 09:29 AM
    • Replies: 8
    • Views: 331
    07-06-2015, 03:21 PM Go to last post
  34. Testing heteroscedasticity statistically

    Hi everyone, I conducted a Breush-Pagantest and it is unsignificant, so there is no heteroscedasticity. My residual plot however looks pretty...

    Started by Charlotte_‎, 07-06-2015 03:20 AM
    breush-pagan, white's test
    • Replies: 2
    • Views: 202
    07-06-2015, 04:05 AM Go to last post
  35. How to Handle Blank Fields in Multiple Linear Regression

    I am building a regression with 45 samples across 20+ independent variables. I am randomly selecting subsets of the variables and running many...

    Started by Ahmntz‎, 06-29-2015 08:24 AM
    blank fields, least squares regression, missing data, regression, regression analysis
    • Replies: 2
    • Views: 256
    07-02-2015, 01:32 PM Go to last post
  36. multivariate regression ?

    Hello everyone, I would like to check whether gross margin% is different in different segments. With segments I mean f.e. quantity, weight,...

    Started by pjlambrecht‎, 06-26-2015 12:40 AM
    • Replies: 3
    • Views: 340
    06-30-2015, 07:07 AM Go to last post
  37. Time series regression

    I am trying to learn how to conduct regression with time series data . I intend to use ARDL which is time series with autoregressive error with the...

    Started by noetsi‎, 06-29-2015 03:51 PM
    • Replies: 0
    • Views: 179
    06-29-2015, 03:51 PM Go to last post
  38. Determining the weight of variables

    I am trying to determine if one of the numbers in regression summary provide the weight of the important of each variable? Here is an example: ...

    Started by MikeDrohan‎, 06-26-2015 09:10 AM
    regression analysis
    • Replies: 4
    • Views: 163
    06-29-2015, 07:06 AM Go to last post
  39. Log

    Dear all, Im am doing an OLS regression. My dependent variable has large negative values, many zeros and large positive values. How can I...

    Started by Joanne Smith‎, 06-28-2015 06:00 AM
    • Replies: 4
    • Views: 190
    06-29-2015, 02:45 AM Go to last post
  40. general mediation question

    Hi guys Probably the easiest question ever but I can't really wrap my head around it. The setup of the research is as follow: X and M =...

    Started by Conni20‎, 06-27-2015 09:14 AM
    • Replies: 1
    • Views: 172
    06-27-2015, 04:22 PM Go to last post
  41. "Lumping" multiple data sets into one for regression

    Closed - moved sub-forums

    Started by reactant‎, 06-26-2015 01:25 PM
    • Replies: 0
    • Views: 183
    06-26-2015, 01:25 PM Go to last post
  42. help with stats

    can someone help explain what this means

    Started by mdnelson‎, 06-26-2015 11:27 AM
    • Replies: 3
    • Views: 126
    06-26-2015, 12:44 PM Go to last post
  43. Error term in log-level models?

    I am running a decomposition of log wages for two time periods and want to explain the variance of the error term. My question is: If there is a...

    Started by David@talkstats‎, 06-26-2015 11:18 AM
    anova, heteroskedasticity, log transformation, regression
    • Replies: 0
    • Views: 86
    06-26-2015, 11:18 AM Go to last post
  44. Chi-quare and logistic regression with three level independent variable

    Dear Friends, I am currently working on my master's Dissertation and have some problems in finding out how I should do my chi-square-test and...

    Started by Ricarda_Rau‎, 06-26-2015 07:24 AM
    chi suqrare, control condition, online experiment
    • Replies: 2
    • Views: 118
    06-26-2015, 08:56 AM Go to last post
  45. Repeated measure regression

    I have always heard that ANOVA and linear Regression are essentially the same method and that what one would do the other would as well. I am familar...

    Started by noetsi‎, 06-25-2015 02:33 PM
    • Replies: 0
    • Views: 156
    06-25-2015, 02:33 PM Go to last post
  46. Interactions in logistic regression - Please help

    Hi everyone, Currently I'm writing my thesis on the effects of divorce on children. It's a complex design so I guess I'll be posting more...

    Started by Charlotte_‎, 06-25-2015 03:08 AM
    dichotomous iv, interaction effects, logistic regression, multicollinearity
    • Replies: 2
    • Views: 155
    06-25-2015, 07:50 AM Go to last post
  47. What is the proper name for such kind of regression models - 2-stage or 2-step?

    Dear community experts, I've faced an interesting situation, which is out of my area of expertise, so I need an advice here from someone more...

    Started by DikAlex777‎, 06-24-2015 10:26 AM
    instrumental variables, logit, two-step estimation
    • Replies: 7
    • Views: 207
    06-24-2015, 04:21 PM Go to last post
  48. Regression analysis(?) for multiple independent variables

    Hello all, Apologies for posting an elementary query, but my stats is very rusty. Not looking for an explicit solution, necessarily, just a...

    Started by Heywood‎, 06-14-2015 06:53 PM
    estimation, multiple regression, prediction
    • Replies: 2
    • Views: 342
    06-24-2015, 11:59 AM Go to last post
  49. Regression analysis on grouped data

    What type of regression model do I use, if I have one dependent variable and five independent variables, but each observation was gathered in groups?...

    Started by kelvarnsen‎, 06-24-2015 10:38 AM
    • Replies: 0
    • Views: 105
    06-24-2015, 10:38 AM Go to last post
  50. Question WLS Confidence interval

    Guys can anyone assist? I've googled and read lots on the matter of WLS (mainly lecture notes from asorted university courses google finds)....

    Started by dj_johnphillips‎, 06-23-2015 10:31 AM
    • Replies: 3
    • Views: 217
    06-24-2015, 02:09 AM Go to last post
  51. Power analysis for Cox regression...a twist?

    Hello, I am planning prospective trial using secondary data. My sample size is 480. I am using an artificial grouping based on an experimental...

    Started by mirt2013‎, 06-23-2015 09:27 PM
    cox regression and power
    • Replies: 0
    • Views: 132
    06-23-2015, 09:27 PM Go to last post
  52. Reverse engineering investment performance correlations to apply to a new investment

    Hello, I've been given some data for the relationship between investor characteristics and investment performance: KPI | Standard coefficient...

    Started by mr e guest‎, 06-23-2015 06:51 AM
    • Replies: 0
    • Views: 101
    06-23-2015, 06:51 AM Go to last post
  53. help with non-normality issue!

    Thread has already been solved.

    Started by Conni20‎, 06-23-2015 06:13 AM
    • Replies: 3
    • Views: 164
    06-23-2015, 06:37 AM Go to last post
  54. Lightbulb The probability of being born a male baby?

    Thank you! :)

    Started by nmpeony‎, 06-21-2015 10:33 PM
    probability, regression
    • Replies: 2
    • Views: 244
    06-22-2015, 08:17 AM Go to last post
  55. Logit regression, marginal effects

    Hi all, I ran a logit regression on the success (1 succesful, 0, unsuccessful) of a Kickstarter Project. I have some difficulties with...

    Started by Piet Voerman‎, 06-21-2015 09:27 AM
    • Replies: 0
    • Views: 179
    06-21-2015, 09:27 AM Go to last post
  56. Negative Binomial Regression Coefficient Interpretation

    Hello, the results of my negative binomial regression show me a .03 coefficient. Does it mean when I increase my IV by one unit the DV increases...

    Started by Wald‎, 06-16-2015 05:45 AM
    • Replies: 3
    • Views: 371
    06-17-2015, 05:54 AM Go to last post
  57. Mixed model for empty cell design

    Hi everybody, I would like to do a mixed effects regression that is like this: ISI ~ Location + Stage + Stage*Location + 1|Patient/Chan ...

    Started by matthieugold‎, 06-15-2015 03:30 PM
    mixed model, unbalanced data
    • Replies: 0
    • Views: 228
    06-15-2015, 03:30 PM Go to last post
  58. hausman test

    Dear community, I analyse purchase decisions on different products j over a duration of t days. I would like to include random or fixed effects. When...

    Started by peter1985‎, 06-12-2015 12:35 PM
    • Replies: 1
    • Views: 264
    06-14-2015, 10:12 AM Go to last post
  59. ex post regression analysis

    So I have 500 different store locations 125 locations are from w brand 200 are from xbrand 100 are from y brand 75 are from z brand each...

    Started by statshelp101‎, 06-14-2015 06:16 AM
    regression analysis
    • Replies: 0
    • Views: 153
    06-14-2015, 06:16 AM Go to last post
  60. minimum adequate model dropped variables

    Once ive found my final minimum adequate model, what other options could i use to ensure that all of the variables dropped during the...

    Started by lydiasharp‎, 06-14-2015 06:05 AM
    • Replies: 0
    • Views: 173
    06-14-2015, 06:05 AM Go to last post

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