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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. standardizing residuals

    Hi All, I'd like to standardize residuals. Can anybody tell me the formula to standardize to mean 0 and standard deviation 1? I also do not...

    Started by cincan‎, 09-09-2010 04:05 PM
    • Replies: 3
    • Views: 5,595
    09-10-2010, 04:35 AM Go to last post
  2. Post Discriminant Analysis Issue

    Hello, I'm trying to make sense out of a recent discriminate analysis I ran which confused me. I got really a really low eigenvalue which...

    Started by cinta19‎, 02-27-2011 07:26 PM
    • Replies: 0
    • Views: 3,315
    02-27-2011, 07:26 PM Go to last post
  3. How to handle non normally distributed residuals

    Currently we are working with a GEE model, at this point we are having doubts about our residuals which are not normally distributed. Log...

    Started by Cintia‎, 10-21-2016 09:58 AM
    • Replies: 0
    • Views: 1,956
    10-21-2016, 09:58 AM Go to last post
  4. Histogram PDF fitting- Bin Variance Poisson or not

    So my basic query is just because you've binned and counted the data into a histogram are the error bars on the bins necessarily the Poisson sqrt(N)?...

    Started by Cinwick2321‎, 08-24-2013 06:41 PM
    histogram, poisson, variance
    • Replies: 0
    • Views: 1,335
    08-24-2013, 06:41 PM Go to last post
  5. Confidence Interval With Regressed Logarithms

    I have converted 80 ("Count") pairs of X and Y to L10(X) and L10(Y) and performed a regression analysis. Assuming a valid correlation, I know I can...

    Started by cisaak‎, 12-12-2013 05:27 PM
    • Replies: 0
    • Views: 1,170
    12-12-2013, 05:27 PM Go to last post
  6. Is it linear regression ?

    Hello , according to https://en.wikipedia.org/wiki/Polynomial_regression#Definition_and_example the equation is linear regression . I...

    Started by civilized‎, 09-22-2015 04:07 AM
    • Replies: 2
    • Views: 1,696
    09-22-2015, 10:54 AM Go to last post
  7. goal is logistical regression model...where to start

    I'm working with weather data using systat software. I have raw values of dependent variable visibility that have been categorized into boolean 1/0...

    Started by civilsurfer‎, 02-07-2011 12:08 PM
    • Replies: 0
    • Views: 2,036
    02-07-2011, 12:08 PM Go to last post
  8. Interpreting Logit Regression Output

    Hi, I'm running logit regression with systat, using fog as a dependent variable (fog did not occur or did, 0 or 1) against 115 predictors with all...

    Started by civilsurfer‎, 02-28-2011 02:08 PM
    • Replies: 0
    • Views: 3,367
    02-28-2011, 02:08 PM Go to last post
  9. Where in the Regression Output tells me which are the strongest predictor variables?

    Hi, I'm no statitician (yet), but I'm having a go!! - am looking to design an employee survey and analyse the data in Excel. I have watched many...

    Started by cjcass‎, 03-24-2012 07:36 AM
    • Replies: 4
    • Views: 4,416
    03-25-2012, 01:03 PM Go to last post
  10. SVAR parameter standard errors

    Hi everyone, How to calculate the standard errors of SVAR parameters. I know how to estimate it for contemporaneous parameter. I want to know how...

    Started by cjiang3‎, 11-17-2014 12:55 PM
    svar, var
    • Replies: 2
    • Views: 3,027
    11-18-2014, 09:27 AM Go to last post
  11. find variance of prediction errors for an AR(2) process

    Hi I have attached my question due to my lack of familiarity with latex at the moment. I need to find the variance of the prediction errors,...

    Started by cjones‎, 05-11-2012 05:58 PM
    • Replies: 0
    • Views: 4,564
    05-11-2012, 05:58 PM Go to last post
  12. Interpreting PROCESS Output

    Hi everyone, Does anyone know of any good resources to help interpret the process macro output, specifically for model 14? I have the book but it...

    Started by ck926‎, 05-06-2015 09:48 AM
    • Replies: 3
    • Views: 3,989
    05-06-2015, 10:11 AM Go to last post
  13. Converting Group Centroids into Original Measurement Units in DFA

    I used SPSS to perform a discriminant function analysis on leg length which I am using to differentiate males and females in my sample. New measures...

    Started by ckevinbarrett‎, 01-25-2012 12:34 PM
    centroids, cut-off, dfa, discriminant, mahalanobis
    • Replies: 2
    • Views: 2,075
    01-25-2012, 12:54 PM Go to last post
  14. How to do residual investigation using Fama-MacBeth regressions?

    Hello, everyone!! :) My research is in asset pricing, and I am regressing an independent variable (an anomaly to the CAPM) against a dependent...

    Started by Clarice‎, 05-09-2014 01:40 PM
    fama macbeth regression, homoscedasticity, residual analysis
    • Replies: 0
    • Views: 2,511
    05-09-2014, 01:40 PM Go to last post
  15. proof of E(EMS)=sigma^2

    How can I prove expected value of error mean square E(EMS)=\sigma^2. I showed that ESS=S_{YY}-\hat\beta_1^2 S_{XX} Thus E(EMS)= E I am...

    Started by Clarkson‎, 04-26-2014 08:26 AM
    anova, regression
    • Replies: 2
    • Views: 1,767
    04-26-2014, 02:16 PM Go to last post
  16. validity of regression assumptions on residual plot

    I am learning regression course.For a homework given the residual plot I have to analyze it.This is how I interpreted it.I want to know if there are...

    Started by Clarkson‎, 05-06-2014 01:38 AM
    • Replies: 0
    • Views: 1,158
    05-06-2014, 01:38 AM Go to last post
  17. Interaction terms in regression-theory

    I am learning categorical variables and interaction terms in the regression course and there few things I don't understand. Suppose a salary...

    Started by Clarkson‎, 07-01-2014 09:30 PM
    categorical data, interaction terms, regression analysis
    • Replies: 1
    • Views: 946
    07-02-2014, 01:37 PM Go to last post
  18. categorical variables in regression analysis and interaction terms

    I am learning multiple regression with categorical variables and in a book I came across this problem. For yield of corn suppose there are two...

    Started by Clarkson‎, 07-02-2014 05:32 AM
    categorical data, interaction term, regression analysis
    • Replies: 1
    • Views: 2,457
    07-02-2014, 01:33 PM Go to last post
  19. Dgrees of freedom of error sum of squares

    For a given metal a experiment was carried out to measure the heat variation with temperature in Celsius.The heat was measured twice at each chosen...

    Started by Clarkson‎, 07-02-2014 05:39 AM
    anova, degrees of feedom, regression analysis
    • Replies: 2
    • Views: 1,402
    07-02-2014, 05:46 AM Go to last post
  20. Mediation analysis with the DV following a gamma distribution.

    Hi there, I am in the early stages of data analysis and could really use some advise. Basically, I am testing whether music tempo influences...

    Started by claudiamalvinas‎, 07-04-2013 10:55 PM
    • Replies: 5
    • Views: 1,241
    07-05-2013, 12:01 AM Go to last post
  21. Interpretation of results from multiple regression analysis

    Hi all, I have just finished a multiple regression analysis for a school assignment. The model has Consumption as its dependent variable, and...

    Started by claus.dp‎, 01-11-2013 07:25 AM
    consumption, explanatory, income, interpretation, wealth
    • Replies: 1
    • Views: 1,772
    01-11-2013, 08:52 AM Go to last post
  22. Constant SE from covariance matrix on Multiple Regression

    Hi: I'm currently developing a Statistical package on Ruby, called statsample (http://ruby-statsample.rubyforge.org/), and I'm now working on...

    Started by clbustos‎, 02-18-2010 09:24 AM
    • Replies: 1
    • Views: 4,136
    02-22-2010, 01:47 AM Go to last post
  23. Baseball stat fans?

    I play on online Baseball simulator that uses numerous ratings and processes them through an engine which spits out a box score and results. I...

    Started by cledussnow‎, 01-14-2013 01:41 PM
    • Replies: 7
    • Views: 1,203
    01-15-2013, 04:46 PM Go to last post
  24. Breusch Pagen test ?! Urgent, how to report APA style

    Hi, I've uploaded an attachment of the residual plot I got from a multiple regression. That line of diagonal lines maks me think that there is...

    Started by clh2‎, 03-20-2014 01:16 PM
    • Replies: 3
    • Views: 3,697
    03-20-2014, 04:49 PM Go to last post
  25. PLEASE HELP, is this Linear?

    thankyou in advance

    Started by clh2‎, 03-20-2014 05:29 PM
    • Replies: 0
    • Views: 1,376
    03-20-2014, 05:29 PM Go to last post
  26. Comparing regression equations

    I am thinking of trying to use the logit model to determine the probability of whether patients will participate in a particular health program. My...

    Started by Clouds1988‎, 02-07-2009 07:35 PM
    • Replies: 2
    • Views: 3,745
    02-08-2009, 11:31 AM Go to last post
  27. BOX-COX transformation - Correct method

    Dear All, I fitted a quadratic model to a set of data. I am trying to apply the box-cox transformation to check if my data should be transformed....

    Started by Clovis‎, 08-05-2010 06:31 AM
    • Replies: 2
    • Views: 10,416
    09-08-2010, 09:44 AM Go to last post
  28. Complex stansardized Residuals

    Dear all, I am doing some nonlinear regression and use mathematica to calculate the associated FitResiduals and StudentizedResiduals. I am a bit...

    Started by Clovis‎, 10-21-2010 10:59 AM
    • Replies: 2
    • Views: 2,444
    10-21-2010, 12:23 PM Go to last post
  29. Estimating 1 cointegrating relationship when trace test indicates rank=2

    Hi all, I am estimating a Vector Error Correction Model for several countries. For one country (call it X), the Johansen trace test suggests that...

    Started by CLP_PS‎, 07-04-2014 10:36 PM
    • Replies: 0
    • Views: 1,257
    07-04-2014, 10:36 PM Go to last post
  30. Multilevel linear growth modelling: an appropriate method?

    Hi, I'm just wondering if I am following the right line of thought for my analysis. I've got longitudinal data (4 years) and a single outcome...

    Started by cls1‎, 10-26-2012 04:56 AM
    • Replies: 0
    • Views: 890
    10-26-2012, 04:56 AM Go to last post
  31. GLM multivariate analysis with proportion & continuous data

    Hi there, I am looking to perform some multivariate analysis on my data (such as canonical correlation analysis or multivariate multiple...

    Started by cmg212‎, 07-27-2014 12:06 PM
    • Replies: 1
    • Views: 2,783
    10-11-2015, 04:11 PM Go to last post
  32. Easy question

    Dear friends: I hope you can help me with this question: I have data of the identity for the GDP=C+I+G+X-M. If I regress C+I+G+X-M, in log...

    Started by cmontalvo‎, 01-08-2011 04:01 PM
    • Replies: 1
    • Views: 2,300
    01-08-2011, 09:36 PM Go to last post
  33. Cluster Analysis

    Hi all, I have a small sample of 75 participants. I'm conducting an exploratory study looking at psychological distress and gender role...

    Started by cmuhooligan‎, 11-29-2007 11:26 AM
    • Replies: 0
    • Views: 2,852
    11-29-2007, 11:26 AM Go to last post
  34. Ordinal Time-Series Dependent Variable

    I am attempting to run a regression with an ordinal DV that is panel/time series data. I only have SPSS and with the ordinal DV, it seems I should be...

    Started by COB1010‎, 01-23-2016 04:38 PM
    • Replies: 3
    • Views: 1,832
    01-23-2016, 05:00 PM Go to last post
  35. How can I find out how shifts in a country's fiscal policies affect economic health.

    I have the values of below variables for 20 years for different countries. Could anyone suggest how I should go about this?How can I use regression...

    Started by CodeBee‎, 11-09-2013 03:02 AM
    regression analysis, statistical model, timeseries analysis
    • Replies: 1
    • Views: 1,308
    11-12-2013, 08:29 AM Go to last post
  36. Estimate the coefficients of an equation system - can I use OLS?

    Hi! I have not worked so much with this type of regressions and have tried to find the answer in my econometric books and on internet, but have...

    Started by Coffeedrinker‎, 04-22-2014 06:05 PM
    econometrics, equation, ols, regression, time series
    • Replies: 4
    • Views: 1,680
    04-24-2014, 04:18 PM Go to last post
  37. REGRESSION are these real findings or outcomes of preexisting differences?

    Hi guys, I have a N=138 sample that consists of 56 participants form one country and 82 from another country. When i run a stepwise regressions...

    Started by coffeehipster‎, 11-15-2014 07:55 PM
    • Replies: 2
    • Views: 1,525
    11-17-2014, 07:27 PM Go to last post
  38. 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: 6,376
    07-15-2009, 07:54 PM Go to last post
  39. How to pick the better model parameter in this example?

    Let's say the model is fixed (e.g., a linear model where 5 coefficients need to be fit). Denote the parameter (coefficient) vector as \beta. ...

    Started by ColdKing‎, 12-10-2011 12:10 PM
    data, model selection, regression
    • Replies: 4
    • Views: 1,840
    12-10-2011, 03:07 PM Go to last post
  40. Can RSS be decreased to 0 when dimension increases?

    Let's consider a simple example: I have two attributes X1 and X2, each has n values; response variable is Y. Using the two attributes together to...

    Started by ColdKing‎, 12-10-2011 12:59 PM
    dimension, regression, rss
    • Replies: 7
    • Views: 3,349
    12-11-2011, 01:07 AM Go to last post
  41. Pleease help!? Filling in "blanks" in Regression Output

    Hello! Can someone please explain, I need to fill in the blanks marked They provide this info in a row: Coeff:-9074.674 Std.Err: ?? ...

    Started by Cold_w‎, 01-06-2016 03:26 PM
    p-value, regression analysis, standard error, stata, t-statistic
    • Replies: 9
    • Views: 3,231
    01-07-2016, 07:42 AM Go to last post
  42. Blinder-Oaxaca Decomposition for a Multivariate Linear Regression

    Hello Everyone, I am working on a thesis that uses a multivariate linear regression to evaluate the racial wealth gap between four groups: whites,...

    Started by Colin‎, 03-16-2012 05:21 PM
    blinder-oaxaca, decomposition, general linear regression, multivariate regression, oaxaca
    • Replies: 1
    • Views: 5,363
    04-28-2012, 11:36 AM Go to last post
  43. Multivariate Regression - Percent Contribution to R^2

    I'm running a multivariate regression in Stata 12 SE that regresses six different groups of independent variables onto my dependent. Each group has a...

    Started by Colin‎, 07-07-2012 05:26 PM
    multivariate regression, r squared
    • Replies: 1
    • Views: 2,084
    07-10-2012, 02:30 PM Go to last post
  44. 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: 4,228
    07-24-2012, 05:50 PM Go to last post
  45. Interaction effects in a logit model

    Hi All Im running some logit models to investigate the determinants of a firms decision to donate/not donate to charity. My IVS include age,...

    Started by Collette‎, 05-19-2014 12:37 AM
    • Replies: 0
    • Views: 1,064
    05-19-2014, 12:37 AM Go to last post
  46. Measurement method for DV changed during longitudinal study

    Hi All, I'm performing a data analysis on a dataset I didn't do the collection for, and I am contending with some odd decisions made by the people...

    Started by Colonel‎, 11-30-2014 06:36 PM
    • Replies: 0
    • Views: 923
    11-30-2014, 06:36 PM Go to last post
  47. Measurement method for DV changed during longitudinal study

    Hi All, I'm using regression analysis (multilevel linear and logistic) on a measure of children's health behaviours over 5 time-points of data. I...

    Started by Colonel‎, 11-30-2014 07:22 PM
    • Replies: 0
    • Views: 1,261
    11-30-2014, 07:22 PM Go to last post
  48. Mediation Analysis With Longitudinal/Multilevel Data

    Hi All, I'm trying to determine if it's possible to conduct mediation analysis on three-level data. I have data with repeated measures at five...

    Started by Colonel‎, 08-26-2015 09:05 PM
    • Replies: 0
    • Views: 2,808
    08-26-2015, 09:05 PM Go to last post
  49. Poisson GLM: data set use; influence of counts

    Hello Regression form, I am after a explanation in layman's terms of what's going on behind the scenes with a couple of GLM analyses I'm doing. ...

    Started by Columbine‎, 01-16-2011 02:46 AM
    • Replies: 0
    • Views: 4,417
    01-16-2011, 02:46 AM Go to last post
  50. Determining Classification accuracy of a Multinomial Logistic Regression using R nnet

    Hi, I am trying to assess the classification accuracy for a Multinomial Logistic Regression model using R. I have adapted the example below to my...

    Started by cometorta‎, 08-03-2016 04:50 PM
    false positives mlr
    • Replies: 1
    • Views: 1,680
    08-03-2016, 09:50 PM Go to last post
  51. Question Confusion over the F-ratio in a hierarchical multiple regression

    Hey all, I'm not used to work with multiple regression analysis, so I would be glad if anyone could help me interpreting this result: I...

    Started by Comfort Eagle‎, 08-26-2013 03:43 AM
    f-change, f-ratio, hierarchical regression, multiple regression
    • Replies: 1
    • Views: 7,653
    08-26-2013, 09:33 AM Go to last post
  52. Help with interaction terms

    Hi, I have two categorical variables (race and field of study) as a part of my model to predict degree completion. In addition to the original model,...

    Started by commuter1112‎, 03-04-2015 01:08 PM
    • Replies: 1
    • Views: 1,570
    03-04-2015, 03:58 PM Go to last post
  53. Help me choose a regression model?

    Hi everyone, I have the following problem in mind: Suppose m items are displayed to a user and the user can buy any one of them. Each of the items...

    Started by Comrade‎, 04-20-2012 07:40 PM
    • Replies: 2
    • Views: 1,783
    04-20-2012, 08:17 PM Go to last post
  54. Repeat sales regression help

    Hello everyone, I am in need of any help or guidance working on a repeat sales regression using spss. I am doing a repeat sales index on housing...

    Started by Concepts003‎, 04-05-2011 04:36 PM
    • Replies: 0
    • Views: 4,876
    04-05-2011, 04:36 PM Go to last post
  55. Question Ranking a Location using Linear Regression

    Hi, I am facing a strange problem with a software patented in the USA. It is a location evaluation software, which offers insights on determining...

    Started by Confidential‎, 11-22-2015 06:23 AM
    • Replies: 6
    • Views: 2,176
    11-24-2015, 09:32 AM Go to last post
  56. 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: 3,249
    08-09-2014, 10:22 PM Go to last post
  57. Estimating impact of Predictor

    Hi, I have a simple regression with 24-36 months of data, let's say of Sales which is the dependant variable and % spend on promotions in that...

    Started by confusedguy15‎, 09-22-2017 07:50 AM
    • Replies: 3
    • Views: 156
    09-22-2017, 08:59 AM Go to last post
  58. Doing logistic regression using epi-info

    Hi there! I'd really appreciate help with this one. I'm finding the prevalence of anemia and its determinants. There are about 23 factors that...

    Started by confusedmedstudent‎, 12-10-2006 05:01 AM
    • Replies: 0
    • Views: 6,772
    12-10-2006, 05:01 AM Go to last post
  59. Comparing regression coefficients - dependent samples

    Hi, I used two methods (A and B) to obtain measurements in a group of subjects. The methods (ways of measuring) are different, but they should...

    Started by confusedscientist‎, 07-16-2012 04:51 AM
    comparing coefficients, dependent samples, linear regression, regression coefficients
    • Replies: 2
    • Views: 1,926
    07-17-2012, 07:07 AM Go to last post
  60. missing price datas before launched

    HI, I have the price and volume data from own product and competitor's product: Year_Month Volume own product's price Volume ...

    Started by conglan‎, 07-06-2012 04:56 AM
    • Replies: 1
    • Views: 1,552
    07-06-2012, 11:10 AM Go to last post

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