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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Supervised learning on sporting events (Data prep)

    I'm playing around with the prediction of sporting events, my data looks something like this. A single row for each team and the stats. Team ...

    Started by qwirky64‎, Today 03:55 AM
    • Replies: 1
    • Views: 52
    Today, 06:09 AM Go to last post
  2. Can the PCA scores be used as variables in multiple linear regression

    Hello, I used PCA to reduce the dimensions of a data set of 10 variables into 2 principal components (describing 82% of variance in data set of 10...

    Started by Deccantraps‎, 08-27-2014 06:49 PM
    multiple regression, pca
    • Replies: 6
    • Views: 173
    Yesterday, 04:04 AM Go to last post
  3. Multivariate linear regression analysis (multiple dependent variable, one independent

    I am trying to determine the reason why(and how many) people with health insurance do not fully use all of its benefits(like free flu vaccines). I am...

    Started by p_s‎, 08-03-2014 11:18 PM
    5 Pages
    1 2 3 ... 5
    • Replies: 72
    • Views: 2,041
    08-30-2014, 05:09 PM Go to last post
  4. Confused: Mixed model, step-wise regression, testing for random effects

    Dear all, I want to perform a MLR (mixed model) on a data set (details below) that has both numeric and categorical explanatory variables. The...

    Started by Deccantraps‎, 08-30-2014 04:53 AM
    mixed model, mlr
    • Replies: 0
    • Views: 89
    08-30-2014, 04:53 AM Go to last post
  5. Regression Using Interaction Terms - PANEL DATA

    Good afternoon, I am working with a panel data with more than 2000 observations and only two years. My topic is on "Full Risk Insurance" in...

    Started by Guy Salgado‎, 08-29-2014 01:02 PM
    index variable, interaction terms, interaction variables, panel fixed effects, regression coefficients
    • Replies: 0
    • Views: 59
    08-29-2014, 01:02 PM Go to last post
  6. Mixed Model Regression in SPSS

    Hello, I have a random group of participants that answered questions on a survey regarding their general opinions on specific health activities....

    Started by nicoled3145‎, 08-28-2014 07:58 AM
    fixed effects regression, mixed models, random effects regression, regression, spss
    • Replies: 0
    • Views: 89
    08-28-2014, 07:58 AM Go to last post
  7. Pasimonious Model for Neural Networks forecasting, I am really confusing.

    Hello People I recently studied Neural Networks forecasting and some interesting question arose while I am reading various articles on the net. ...

    Started by auto9817‎, 08-27-2014 06:56 PM
    • Replies: 0
    • Views: 58
    08-27-2014, 06:56 PM Go to last post
  8. Use of factor analysis + regression

    Independent Variable: I have a survey of 50 states indicating the amount of control the state board of education has in 31 areas answered on a three...

    Started by cynicalflyer‎, 08-19-2014 11:49 AM
    • Replies: 6
    • Views: 275
    08-26-2014, 05:15 PM Go to last post
  9. Non-parametric regression

    I am relatively new to this so excuse my ignorance. As best I can tell non-parametric regression has no coefficients (no slopes). It does have...

    Started by noetsi‎, 08-25-2014 03:02 PM
    • Replies: 8
    • Views: 152
    08-26-2014, 10:25 AM Go to last post
  10. Linear or non-linear regression model

    Hi, I have 20 independent variables and 1 dependent. I've used the stepwise method to determined what predictors are more significant compared to...

    Started by djordje‎, 08-25-2014 10:58 PM
    important predictors, nonlinear regression, stepwise, type of regression
    • Replies: 1
    • Views: 85
    08-26-2014, 12:31 AM Go to last post
  11. Comparing 2 best fit lines for 2 halves of a data set

    I have a data set with ~200 coordinates plotted on a scatter plot. I can either use the data set as is, or split this plot into two data sets along a...

    Started by player100200‎, 08-25-2014 06:13 PM
    goodness of fit, regression
    • Replies: 0
    • Views: 68
    08-25-2014, 06:13 PM Go to last post
  12. Regression where IV/predictor is a proportion, bounded by 0 and 1

    Hi, I know that if the outcome variable is a proportion, I'd need to run a beta regression, but can anyone advise on running a regression where...

    Started by morning_sun‎, 08-25-2014 07:32 AM
    proportion, regression
    • Replies: 0
    • Views: 109
    08-25-2014, 07:32 AM Go to last post
  13. Statistical Analysis help for thesis - Correlation, Probit, Tobit and Moderation

    Hello Talkstats users! I am writing here cause I need some guidance on my statistical analysis which has turned out far too complex for my...

    Started by Uni_student‎, 08-25-2014 05:42 AM
    correlation, moderation, probit, tobit
    • Replies: 0
    • Views: 82
    08-25-2014, 05:42 AM Go to last post
  14. Which approach to use? Repeated measures with a covariate

    Hi, I hope that someone can give me a pointer please. I am trying to determine which is the most appropriate test to apply to my data. I have...

    Started by morning_sun‎, 08-24-2014 07:44 AM
    ancova, covariate, regression, repeated measures
    • Replies: 0
    • Views: 91
    08-24-2014, 07:44 AM Go to last post
  15. Post Beta NO Intercept purpose

    Hey guys, What would a Beta with NO intercept tell me about a time series model?

    Started by talbobai‎, 08-23-2014 06:19 AM
    beta, beta regression, regresion analysis
    • Replies: 0
    • Views: 121
    08-23-2014, 06:19 AM Go to last post
  16. Adding dummy variables let significance of coefficients disappear

    Hi all I have a regression with two variables x1 and x2, both are significant. When I add a dummy variable D (which is significant), one of the...

    Started by weasel‎, 08-22-2014 04:22 AM
    • Replies: 3
    • Views: 158
    08-22-2014, 07:14 AM Go to last post
  17. Strong Predictor

    Hi guys! I have a question... I'm trying to fit 4 predictors to regress on abdominal fat. Multicollinearity was checked for, and all the other...

    Started by gene2420‎, 08-21-2014 02:37 PM
    • Replies: 3
    • Views: 139
    08-22-2014, 02:27 AM Go to last post
  18. Are there model specification tests for Two Stage Least Squares (2SLS)?

    Question. Are there model specification tests for Two Stage Least Squares (2SLS)? I am trying to estimate the parameters (B1, B2, B3) of the...

    Started by Socks‎, 08-21-2014 01:23 AM
    • Replies: 0
    • Views: 127
    08-21-2014, 01:23 AM Go to last post
  19. Question Regression confusion

    I am looking at relationship between GHQ12 and treatment. Just wondering is it suitable to do regression analysis on this? But which would be my...

    Started by nmm‎, 08-20-2014 07:58 AM
    • Replies: 3
    • Views: 230
    08-20-2014, 01:52 PM Go to last post
  20. Linear regression, and scatter plot

    Hi for everyone, i have some difficulties with interpretation of the regressions, probably linear, i am a lawyer so for me it is quite difficult to...

    Started by HagaMaga‎, 08-20-2014 04:01 AM
    • Replies: 0
    • Views: 96
    08-20-2014, 04:01 AM Go to last post
  21. problem with linear multiple regression in R

    Hi, I have a problem to build and to explain the linear multiple regression. I have a data set called Cars93 with 26 variables and 93...

    Started by angersan‎, 08-18-2014 03:32 PM
    • Replies: 0
    • Views: 127
    08-18-2014, 03:32 PM Go to last post
  22. mixed predicator types for building logistic regression model

    There has a data set, some predicator variables are of categorical types, such as X1={A, B,C}; X2={1, 2, 3}; and other predicator variables are of...

    Started by winecoding‎, 08-18-2014 02:22 PM
    categorical dependent, logistic regression, variable selection
    • Replies: 0
    • Views: 90
    08-18-2014, 02:22 PM Go to last post
  23. Question Multivariate Regression when Independent Variables could have Dependencies

    First post, have looked and could not find this question elsewhere. Struggling with this so hopefully someone can help. I am trying to predict the...

    Started by GTsn311‎, 08-18-2014 11:08 AM
    interdependence, multivariable, regression
    • Replies: 0
    • Views: 74
    08-18-2014, 11:08 AM Go to last post
  24. Linear regression with an interaction variable

    I have a linear regression model: Dependent variable = α + independent variable 1 (continuous variable) + independent variable 2 (categorical) +...

    Started by VicB‎, 08-18-2014 10:30 AM
    • Replies: 0
    • Views: 103
    08-18-2014, 10:30 AM Go to last post
  25. linear specification vs. logarithmic specification

    Dear all When I do a box-cox test to evaluate whether to use a logarithmic transformation for my dependent variable (which are IRRs, and the...

    Started by weasel‎, 08-18-2014 07:29 AM
    • Replies: 2
    • Views: 94
    08-18-2014, 07:48 AM Go to last post
  26. Multiple Linear Regression Problem

    Hi, I want to do a multiple regression analysis. I have one Y which are numeric values (sample number = 85) and the following Xs. Sr...

    Started by Deccantraps‎, 08-17-2014 11:37 PM
    multiple regression, stepwise
    • Replies: 1
    • Views: 106
    08-18-2014, 01:13 AM Go to last post
  27. The absolute dependence in panel data

    Hello, I want to ask something related to the panel data analysis. In traditional regression and correlation analysis, it is clear that if the...

    Started by enchoj‎, 08-13-2014 03:55 AM
    • Replies: 1
    • Views: 117
    08-15-2014, 01:39 AM Go to last post
  28. Generalised Linear Model - with negative skewed DV

    Hi All, I am trying to fit a generalised linear model to which the dependant variable is negatively skewed. The DV ranges from 0 to 150 with 45%...

    Started by TheTransporter‎, 08-14-2014 10:52 PM
    • Replies: 0
    • Views: 83
    08-14-2014, 10:52 PM Go to last post
  29. Help: Bootstrap Regression (or not)

    I am an ecologist with enough statistics background to know I am confused. The trophic magnification factor (TMF) is a commonly used measure to...

    Started by mudminnow‎, 08-14-2014 10:36 AM
    • Replies: 0
    • Views: 111
    08-14-2014, 10:36 AM Go to last post
  30. When to use partial bivariate correlation and when to use multiple linear regression?

    Let's say I have X and Y and wonder how strongly they correlate, but am suspecting that Z is a confounder. What research question would lead me...

    Started by trexter‎, 08-14-2014 07:13 AM
    • Replies: 1
    • Views: 99
    08-14-2014, 08:23 AM Go to last post
  31. Interpretation CATREG interaction coefficient

    Hi everybody. I have done an Catreg analyses on my data and have included interaction variables (for example nutrient * sex). However sex is...

    Started by inge1804‎, 08-13-2014 10:01 AM
    catreg
    • Replies: 2
    • Views: 145
    08-14-2014, 01:48 AM Go to last post
  32. Problem/question regarding Cox Regression

    Hello! I am new to statistics and research and am looking for a little help. I am doing a study looking at the the effects of post-operative...

    Started by drronin9790‎, 08-13-2014 04:29 PM
    • Replies: 1
    • Views: 110
    08-13-2014, 08:39 PM Go to last post
  33. Moderator regression: plotting graphs from multiple product terms

    This is my first time posting, so apologies if I don't make sense. I've conducted a hierarchical regression analysis. I have multiple IVs whereby...

    Started by pete14678‎, 08-13-2014 10:57 AM
    moderated multiple regres, regression analysis, regression equation
    • Replies: 0
    • Views: 93
    08-13-2014, 10:57 AM Go to last post
  34. Plot for multiple regression

    Hi All, I have a very basic question. When I run a regression to predict Y from X, I basically draw a scatterplot in excel. I am wondering how...

    Started by mac101‎, 08-12-2014 02:48 PM
    multiple regression, regression plot
    • Replies: 9
    • Views: 204
    08-12-2014, 06:03 PM Go to last post
  35. Robustness check of univariate results

    Hi all I calculated several univariate regressions with different explanatory variables. Some are significant, while others aren't. Some show the...

    Started by weasel‎, 08-12-2014 04:13 PM
    • Replies: 0
    • Views: 111
    08-12-2014, 04:13 PM Go to last post
  36. Cox proportional hazard

    I am trying to understand how to interpret the change in the hazard function for a one unit change in a dummy predictor. I know for a continuous...

    Started by noetsi‎, 08-12-2014 11:06 AM
    • Replies: 3
    • Views: 102
    08-12-2014, 01:00 PM Go to last post
  37. Logistic regression, but no negative responses?

    So I am trying to model who is likely, from a list of addresses, to go to a store. I have lots of criteria about the people who have visited my...

    Started by bernstml19‎, 08-11-2014 06:42 PM
    binary data, logistic regression, regression analysis
    • Replies: 5
    • Views: 167
    08-12-2014, 10:38 AM Go to last post
  38. Moderated regression - how to create the graph for some (not all) variables.

    I've run into a problem and I was hoping someone could help me out. My research question is whether beliefs about controllability of weight...

    Started by artemisynn‎, 08-12-2014 05:13 AM
    • Replies: 0
    • Views: 128
    08-12-2014, 05:13 AM Go to last post
  39. What is a "count" in regression

    It is often said that you should use Poisson regression with data that involves counts. But it seems to me that most of data in the social science is...

    Started by noetsi‎, 08-11-2014 05:04 PM
    • Replies: 9
    • Views: 215
    08-11-2014, 08:51 PM Go to last post
  40. PP-Plot

    I sometimes, when doing linear regression get a normal p-p-plot of regression standardized residual that looks like the one below. Can I still use...

    Started by trexter‎, 08-11-2014 06:09 AM
    • Replies: 2
    • Views: 170
    08-11-2014, 10:12 AM Go to last post
  41. Standard Error of Estimate

    I am reading a book called Applied Statistics with Excel by G. Keller. On p593 he wrote Standard Error of Estimate=(SSE/n-k-1)^2, and SSE = sum...

    Started by yma16‎, 08-09-2014 11:45 PM
    • Replies: 7
    • Views: 208
    08-10-2014, 08:42 AM Go to last post
  42. Consequences of wrongly applying dummy variables?

    I was just wondering if there were any consequences to applying dummy variables to independent variables which don't need it. For example, let's...

    Started by l_davies93‎, 08-10-2014 06:58 AM
    dummy-variable, regression
    • Replies: 0
    • Views: 121
    08-10-2014, 06:58 AM Go to last post
  43. Moderation Analysis through Process by Andrew Hayes and SPSS regression analysis

    Hello all, I need help analyzing some data for a moderation analysis. I have a continuous variable (predictor), Exhaustion, a continuous outcome,...

    Started by confooseddesi89‎, 08-09-2014 10:22 PM
    interaction, moderation, process, regression, significance
    • Replies: 0
    • Views: 155
    08-09-2014, 10:22 PM Go to last post
  44. Multiple Linear Regression: Coeffiecients are all insignificant - Can someone help?

    Hi together, I carried out a multiple linear Regression (OLS) and the results show me that all my explanatory variables (business model...

    Started by SimonNewbie‎, 08-09-2014 08:55 AM
    • Replies: 1
    • Views: 181
    08-09-2014, 11:18 AM Go to last post
  45. multiple regression if one corrleation variable is linear, other is nonlinear

    Hello, I am working on soil biology. I have a data set of soil CO2 emissions (dependant variable), with a number of other measured variables...

    Started by goolian‎, 08-07-2014 07:57 PM
    • Replies: 2
    • Views: 137
    08-09-2014, 08:41 AM Go to last post
  46. Post How to estimate quasi-elasticities from marginal effects of logistic regression?

    HI everyone, I am new to this forum. I need some help regarding logistic regression analysis. I am using logistic regression for my research. I...

    Started by abiduaf‎, 08-09-2014 07:11 AM
    logistic regression, quasi-elasticities, r-statisitcs
    • Replies: 0
    • Views: 74
    08-09-2014, 07:11 AM Go to last post
  47. cooks distance cutoff

    Hello, I urgently need to find out what is happening in regards to below: I am doing a huge number of simple linear regressions. For each...

    Started by Deccantraps‎, 08-07-2014 03:37 AM
    cooks distance, outlier detection
    • Replies: 9
    • Views: 216
    08-08-2014, 10:18 PM Go to last post
  48. interpretation nonlinear regression output

    I have run a linear regression. The independent variable is supposed to have a nonlinear relation with the dependent variable (both variables are...

    Started by rob1‎, 08-08-2014 01:49 PM
    • Replies: 0
    • Views: 123
    08-08-2014, 01:49 PM Go to last post
  49. Reasons for high lambda in ridge regression?

    I've seen a few papers where they use k-fold cross-validation (k=10) to find the optimal lambda. They end up with huge amounts such as 4000. This is...

    Started by l_davies93‎, 08-08-2014 01:23 PM
    • Replies: 0
    • Views: 96
    08-08-2014, 01:23 PM Go to last post
  50. Interpretation of restricted cubic splines' coefficients

    Hi all, I was wondering whether there is a "not-very-obscure" interpretation of the coefficients (in a regression analysis, like logistic...

    Started by Phaedrus‎, 08-08-2014 04:05 AM
    restricted cubic splines
    • Replies: 0
    • Views: 84
    08-08-2014, 04:05 AM Go to last post
  51. basic 3 year's observations forecasting - need for tips and feedback

    Hello everybody, I need advice about simple forecasting strategies and wondered if anyone here could kindly give me feedback. In each of the four...

    Started by parsec2011‎, 08-08-2014 01:46 AM
    • Replies: 0
    • Views: 95
    08-08-2014, 01:46 AM Go to last post
  52. Comparing regression slopes measured two times withinsubjets?

    Although I am not a statistics-newbee, I have no clue how to contrast the following situation against null-hypothesis, i.e. I don't know how to do...

    Started by statQuestions‎, 08-07-2014 02:09 PM
    • Replies: 3
    • Views: 171
    08-08-2014, 12:33 AM Go to last post
  53. Multiple regression then Sobel for mediation

    Hi, I am doing a mediation analysis. I first ran a multiple regression for IV (2 variables) to mediator. I want to do a Sobel test and use the...

    Started by PsychRachel‎, 08-07-2014 09:31 PM
    • Replies: 1
    • Views: 94
    08-07-2014, 09:33 PM Go to last post
  54. Logistic regression p-value significance

    Dear all, I have done logistic regression for 20 independent variables for which all of them are categorical (0 and 1) also 1 binomial response...

    Started by smurts‎, 08-07-2014 12:44 PM
    • Replies: 3
    • Views: 187
    08-07-2014, 02:17 PM Go to last post
  55. Question about standardizing in ridge regression

    Hey guys I found one or two papers which use ridge regression (for basketball data). I was always told to standardize my variables if I ran a ridge...

    Started by l_davies93‎, 08-07-2014 05:13 AM
    • Replies: 0
    • Views: 80
    08-07-2014, 05:13 AM Go to last post
  56. Upper Envelope on XY Data

    Hi There, I am working with a set of data where I get a scatter as shown in the attached image. When looking at the data, I can convince myself...

    Started by ntlegg‎, 08-05-2014 09:57 AM
    • Replies: 3
    • Views: 171
    08-06-2014, 07:13 AM Go to last post
  57. Interaction effect for quadratic relation

    Looking at the outcome of a linear regression (see also the file enclosed), there is an inverted U-shaped relation between ambidexterity and the...

    Started by rob1‎, 08-05-2014 10:13 AM
    • Replies: 2
    • Views: 146
    08-05-2014, 12:11 PM Go to last post
  58. Constant negative fitted values...am I missing something?

    Hello all, I'm attempting to fit a model where y variable is a variety of $/ha/year figures (all positive) ranging between 0.01 and 2520. The...

    Started by samuelle‎, 08-04-2014 07:54 AM
    glm, linear, negative values
    • Replies: 2
    • Views: 139
    08-05-2014, 04:34 AM Go to last post
  59. Testing multiple interaction variables in logistic regression

    Hi everyone, For a study that I'm currently conducting I want to know the effect of some of my variables on other variables, which I think should...

    Started by mjspijker‎, 08-03-2014 06:18 PM
    how to, interaction variables, logistic regression, model selection
    • Replies: 6
    • Views: 271
    08-04-2014, 07:11 PM Go to last post
  60. Appropriate model for (repeated) data

    I have some cross-sectional data, where I'm interested in estimating a relationship between the "number of items in use" in sector i of country j and...

    Started by longshot‎, 08-01-2014 07:58 PM
    regression analysis, regression equation, regression models, repeated cases, repeated measurements
    • Replies: 0
    • Views: 184
    08-01-2014, 07:58 PM Go to last post

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