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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Necessary to rank transform ANCOVA?

    Hi all, I'm hoping you can shed some light. My data are non-parametric, so I thought I'd have to use ranks in order to do ANCOVA, but then I read...

    Started by StatsN00bie‎, 08-15-2016 06:21 AM
    • Replies: 10
    • Views: 175
    Today, 05:48 PM Go to last post
  2. Variance of single element of random effects in linear mixed model

    Hi there, I have recently been working a bit with linear mixed model and in order to enhance my understanding of those, I would like to know the...

    Started by lo2‎, 08-14-2016 05:11 AM
    • Replies: 4
    • Views: 145
    Today, 10:38 AM Go to last post
  3. Comparing fit of GLM to OLS regression

    Hello talkstat. First post in this magnificent forum! In my master thesis I'm estimating health care expenses to patients, who has experienced...

    Started by Steinberg‎, Today 03:36 AM
    fit, glm, ols, transforming
    • Replies: 1
    • Views: 50
    Today, 10:21 AM Go to last post
  4. Regression analysis : with ranking data

    In my survey I have independent variables of age , sex and length of membership I have then have a question where I ask participants to rank 5...

    Started by Epy‎, Today 12:21 AM
    • Replies: 2
    • Views: 85
    Today, 04:21 AM Go to last post
  5. Lag Lenght

    Hi guys. I am making research and I am faced with some problem. I have VAR model and try to conduct ADF test. I use Schwarz criteria for defining lag...

    Started by Meloyn‎, Today 04:00 AM
    adf, schwert, var
    • Replies: 0
    • Views: 43
    Today, 04:00 AM Go to last post
  6. Interpreting an interaction effect

    Hi All, Last year I ran an experiment where I measured the behaviour of a songbird (how long it took them to approach a speaker playing their...

    Started by shardman‎, 08-20-2016 04:35 AM
    • Replies: 6
    • Views: 210
    Yesterday, 04:57 AM Go to last post
  7. AMOS OUTPUT - Interpreting results for moderation

    Hello! Please some one help me interpret and put in writing the results (attached as images) from AMOS for moderation analysis. Please I need...

    Started by Zainab‎, 08-20-2016 02:47 AM
    • Replies: 1
    • Views: 109
    08-22-2016, 06:52 PM Go to last post
  8. Binary Logistic Regression Assumptions Testing

    Hi there, I am having difficulties testing some of the assumptions while conducting a binary logistic regression for an exploratory study. 1....

    Started by ting01‎, 08-20-2016 10:41 AM
    • Replies: 2
    • Views: 106
    08-21-2016, 12:26 AM Go to last post
  9. Moderator analysis: regression x partial corr.

    Hi, I hope someone can answer my question soon. I am helping my friend with research. She has independent variable X and dependant variable Y and...

    Started by Strider‎, 08-20-2016 07:39 PM
    • Replies: 1
    • Views: 110
    08-20-2016, 08:58 PM Go to last post
  10. How to interpret the Line Graph

    Hello! Please if someone help in writing what this line graph means. Thank You.

    Started by Zainab‎, 08-20-2016 01:32 PM
    • Replies: 2
    • Views: 114
    08-20-2016, 04:52 PM Go to last post
  11. linear regression without intercept with dummy variables

    Hello, i run simple linear with one dummy variables and no intercept. i would like to understand the meaning of this. for example, my beta1=1.2,...

    Started by AlexeyS‎, 08-20-2016 12:59 AM
    dummy variables, linear regression, no intercept
    • Replies: 1
    • Views: 72
    08-20-2016, 06:13 AM Go to last post
  12. transformation on variables

    I run simple linear regression, and saw that my residuals not distributed normally. my dependent variable histogram was as log-normal, i did a...

    Started by AlexeyS‎, 08-20-2016 01:41 AM
    • Replies: 0
    • Views: 51
    08-20-2016, 01:41 AM Go to last post
  13. Detecting fake results

    Hello everyone, I am currently working together with a fellow student on analyzing what factors affect profitability in banking, by using a...

    Started by Eina‎, 08-19-2016 12:07 PM
    • Replies: 5
    • Views: 123
    08-19-2016, 03:40 PM Go to last post
  14. Combining data from different sources

    Hi, I have data from two very different sources (bird counts from ships and bird counts from the shore) which aim to estimate the same...

    Started by mmercker‎, 08-19-2016 11:51 AM
    biology, machine learning, model averaging, regression analysis
    • Replies: 2
    • Views: 61
    08-19-2016, 01:28 PM Go to last post
  15. Level-2 in growth models

    Dear all, Perhaps someone could help me with a more detailed explanation why time is specified as a level-2 variable in the growth models...

    Started by dnh‎, 08-19-2016 05:25 AM
    • Replies: 0
    • Views: 44
    08-19-2016, 05:25 AM Go to last post
  16. Regression analysis with sales forecasting

    Hello, I am in the process of using a regression model to help predict the forecast of soft drinks. I have 52 sets of weekly data and my...

    Started by statsgirl123‎, 08-17-2016 02:17 PM
    forecasting, regression, standard error
    • Replies: 1
    • Views: 153
    08-17-2016, 10:32 PM Go to last post
  17. Logistic regression data set

    Hi all. I am in search of a public data set online where I could run a logistic regression. The data should be about 10-20 variables and a fairly...

    Started by sonicbill11‎, 08-17-2016 08:17 AM
    • Replies: 1
    • Views: 113
    08-17-2016, 01:51 PM Go to last post
  18. Lightbulb Fama-Macbeth cross-sectional regression interpretation

    Hello everyone, I have applied Fama-Macbeth cross-sectional regression on Fama and French five-factor model (2014). On the left-hand side are the...

    Started by Subhan Ahmad‎, 08-17-2016 12:59 PM
    asset pricing model, fama macbeth regression, regression coefficent
    • Replies: 0
    • Views: 72
    08-17-2016, 12:59 PM Go to last post
  19. Estimating uncertainty/error in multi-measurement, multi-replicate analysis

    Please forgive my ignorance, it has been a while since error analysis in college and I am at a loss trying to estimate error for the following...

    Started by MDYK1976‎, 08-16-2016 05:35 PM
    • Replies: 0
    • Views: 67
    08-16-2016, 05:35 PM Go to last post
  20. Reporting Multiple Regression with Categorical Variable(s)

    Hi everyone, I'm overthinking one of my analyses and need a community sanity check. :) For simplicity's sake, let's say that my basic multiple...

    Started by tophbeifong‎, 08-16-2016 11:07 AM
    • Replies: 2
    • Views: 102
    08-16-2016, 11:55 AM Go to last post
  21. Interaction effect

    Hey guys, I would like to investigate effect of a treatment in randomized control trial. Also, I would like to investigate the moderating effect...

    Started by floriisco‎, 08-15-2016 12:48 PM
    interaction effect, interactive terms
    • Replies: 4
    • Views: 101
    08-15-2016, 01:13 PM Go to last post
  22. How to visualize linear multiple regression?

    Hello, I have data from measuring und now i have made linear multiple regression to describe one size from five another sizes. I have get an...

    Started by Perilun‎, 08-14-2016 03:40 PM
    • Replies: 3
    • Views: 155
    08-15-2016, 07:25 AM Go to last post
  23. Post A priori Power Analysis

    Hey Guys, I am a newbie and have a question on power analysis. I would like to measure the effect of an intervention on various measures and...

    Started by floriisco‎, 08-13-2016 11:02 AM
    hypothesis testing, lmr, power analysis
    • Replies: 2
    • Views: 186
    08-15-2016, 04:10 AM Go to last post
  24. Beta Regression Resources?

    Does anyone have some good resources for Beta Regression related to all of its parts: -assumptions -diagnostic (residuals) ...

    Started by hlsmith‎, 08-10-2016 04:04 PM
    beta regression, lemon squeezer
    • Replies: 8
    • Views: 296
    08-13-2016, 01:41 PM Go to last post
  25. how to explian the insig. main effect without sig. coefficient of interaction?

    I am doing the research using the panel data. My confusions follow. Y=x1+x2: X1 sig, but X2 insig. however, when interaction is put into the model...

    Started by davidxu‎, 07-28-2016 01:40 AM
    • Replies: 3
    • Views: 292
    08-08-2016, 10:49 PM Go to last post
  26. Binary logistic regression

    Hi there i ran logistic regression and got the following model: var1: B = -5.670 Sig = 0.01 Exp (B) 0.003 Constant: B = -0.469

    Started by kasperski‎, 08-02-2016 11:54 AM
    • Replies: 13
    • Views: 377
    08-08-2016, 11:38 AM Go to last post
  27. Proof

    Hello! I've read a textbook with the following expression. "y = beta 0 + beta 1 * lnx + u" and it claimed that end up: delta y = beta 1 * ((delta...

    Started by BatmanForever‎, 08-08-2016 05:30 AM
    • Replies: 1
    • Views: 142
    08-08-2016, 09:31 AM Go to last post
  28. comparing extremes of an independent variable

    Dear all, I have been cracking my head for 2 weeks but i havent been able to figure out this, so i decided to ask for help. I have done a...

    Started by niccolo‎, 08-04-2016 03:54 AM
    • Replies: 10
    • Views: 267
    08-04-2016, 07:18 PM Go to last post
  29. 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: 128
    08-03-2016, 09:50 PM Go to last post
  30. Determining residual outliers when heteroskedasticity exists

    Hi, I was wondering if anyone has any thoughts on the best way to approach the detection of outliers based on residuals from a linear regression...

    Started by talkbox‎, 08-03-2016 07:13 AM
    • Replies: 3
    • Views: 133
    08-03-2016, 01:46 PM Go to last post
  31. Need Help with developing general linear mixed model regression equation

    I'll be moving this to another thread and don't want to create multiple versions. Thanks!

    Started by Laide‎, 08-03-2016 12:13 PM
    applied statistics, finance, healthcare, regression
    • Replies: 0
    • Views: 92
    08-03-2016, 12:13 PM Go to last post
  32. Model equation Binary probit model

    Hi, the model equation for a binary probit model looks like that: Prob(Y=1|X) = Φ(Xβ) I just want to know if my vector X includes covariates...

    Started by xs0982‎, 08-03-2016 06:44 AM
    • Replies: 1
    • Views: 102
    08-03-2016, 10:49 AM Go to last post
  33. Difference between a VAR and a VECM

    Hello, I am performing cointegration analysis using Eviews and the DOLS estimator in the cointegrating equation. After saving the residuals of...

    Started by Reynaldo2007‎, 08-02-2016 09:55 PM
    econometrics, var, vecm
    • Replies: 0
    • Views: 131
    08-02-2016, 09:55 PM Go to last post
  34. Regularized Regression

    When is L1, L2 or e-net preferred when analyzing data? It can't all be based on cross-validation?

    Started by hlsmith‎, 08-02-2016 10:49 AM
    • Replies: 0
    • Views: 83
    08-02-2016, 10:49 AM Go to last post
  35. Regression on two explicative variables

    Hello, I am currently doing a thesis which aims to explain returns of stocks in function of the ownerships of some stakeholders. In the Excel...

    Started by Gaut93‎, 08-01-2016 05:24 AM
    • Replies: 2
    • Views: 136
    08-02-2016, 02:42 AM Go to last post
  36. Interpreting residuals

    Still getting used to interpreting large numbers of data points for regression assumptions. The attached looks fan shaped to me, which it is said...

    Started by noetsi‎, 06-09-2016 01:42 PM
    • Replies: 10
    • Views: 632
    08-01-2016, 08:16 AM Go to last post
  37. Data forecast

    Hello, I'm not exactly sure if this is the right forum, or even if what I'm looking for is actually called data-forecasting, but here's my question...

    Started by jepperaskdk‎, 07-30-2016 05:52 PM
    • Replies: 1
    • Views: 176
    07-31-2016, 03:17 PM Go to last post
  38. Nonlinear Regression - Statistica

    Hello Everyone, I trust you are all doing great. I was working on an experimental problem and I have got to the phase where I need to carryout...

    Started by Sean0072‎, 07-31-2016 05:24 AM
    • Replies: 0
    • Views: 135
    07-31-2016, 05:24 AM Go to last post
  39. Regression Analysis

    Hello, It would be great if somebody can help me with this: Is it correct to conduct factor analysis on data source (A) and then run a simple...

    Started by MSN‎, 07-29-2016 09:00 AM
    correlation, dependent variables, factor analyses, independent variables, regression analysis
    • Replies: 2
    • Views: 190
    07-29-2016, 07:05 PM Go to last post
  40. Calculation of parameter uncertainties when using method of least squares

    Hi everyone, I am struggling with a maybe simple problem. I have a set of data points (x,y) for which I would like to derive a fitting function of...

    Started by bordercollie2‎, 07-29-2016 04:59 AM
    • Replies: 0
    • Views: 118
    07-29-2016, 04:59 AM Go to last post
  41. Leverage/outliers in large data sets

    Typically discussions of these and their impact on regression deal with individual points. Commonly I have 10-30 thousand data points and its...

    Started by noetsi‎, 06-11-2016 02:35 PM
    • Replies: 3
    • Views: 294
    07-28-2016, 06:30 AM Go to last post
  42. Lagged independent variables

    Hi, In my probit model I have a DV measured in t and several independent variables lagged up to 5 years. There also some other independent control...

    Started by xs0982‎, 07-28-2016 02:48 AM
    • Replies: 0
    • Views: 124
    07-28-2016, 02:48 AM Go to last post
  43. what does it mean if the f stat is 0?

    title says it all

    Started by imscrewd‎, 07-27-2016 11:45 PM
    • Replies: 1
    • Views: 141
    07-28-2016, 02:44 AM Go to last post
  44. Unhappy homework help

    1.The following data concerning income and educational attainment for several counties in Alabama were taken from the U.S. Census Website. County...

    Started by imscrewd‎, 07-27-2016 11:11 PM
    • Replies: 1
    • Views: 166
    07-28-2016, 02:05 AM Go to last post
  45. Finding predicted values with logged (ln) dependent variable.

    Hello all, I'm currently working on my first quantitative project. I am doing an OLS regression in SPSS. I had to take the natural log of my DV in...

    Started by burdfishdemon‎, 07-27-2016 03:21 AM
    log transformation, ols, predicted values, spss, statistics
    • Replies: 3
    • Views: 212
    07-27-2016, 05:30 PM Go to last post
  46. Interpreting scaling vs centring vs normalizing negative binomial model

    Hello, I'm a bit confused between the difference between scaling and centring in a negative binomial regression. My model looks like this:...

    Started by lken‎, 07-27-2016 02:00 PM
    centering, negative binomial, normalization, scaling
    • Replies: 0
    • Views: 113
    07-27-2016, 02:00 PM Go to last post
  47. Hypothesis for logistic regression

    I get a group of data and would like to use the regression to analysis the relationship. The dependent variable Y is a kind of loss rate, so it is...

    Started by pepsico007‎, 07-27-2016 08:30 AM
    hypothesis, logistic, regression
    • Replies: 4
    • Views: 189
    07-27-2016, 12:37 PM Go to last post
  48. 2 or 3 level multilevel model? Quick query

    Hi there, The title should read 3 or 4 level multilevel model, my apologies. I am estimating a multilevel model (in Stata). My goal is to...

    Started by StatsQQQ‎, 07-26-2016 12:31 PM
    country, level, multilevel, regression
    • Replies: 1
    • Views: 166
    07-26-2016, 07:55 PM Go to last post
  49. Choosing appropriate statistics (please)

    Hi, I have an issue (mostly being clueless and trying to achieve more than I can), I am writing a page in Ruby on Rails for which I need to calculate...

    Started by HaideeHammond‎, 07-25-2016 03:14 PM
    correlation, pearson, phi coefficient, probablity, ruby
    • Replies: 0
    • Views: 120
    07-25-2016, 03:14 PM Go to last post
  50. How to Interpret the Factor Analysis Findings

    Kindly help in interpreting the SPSS Factor Analysis findings as attached

    Started by Zainab‎, 07-23-2016 03:44 PM
    • Replies: 4
    • Views: 343
    07-24-2016, 12:37 PM Go to last post
  51. Moved: How to Interpret the Factor Analysis Findings

    Kindly help writing research findings for the Factor Analysis as attached

    Started by Zainab‎, 07-24-2016 06:17 PM
    • Replies: -
    • Views: -
    07-24-2016, 12:37 PM Go to last post
  52. Please help with the regression analysis result

    Greetings everyone, I'm currently working on my Bachelor thesis relating to behavioral finance. My topic requires me to run a regression analysis...

    Started by darkblade0808‎, 09-20-2015 11:05 PM
    • Replies: 4
    • Views: 782
    07-24-2016, 02:41 AM Go to last post
  53. Exclamation please help : modelization

    Hello, I have a distribution which looks like a Khi-2 distribution, which model is most appropriate? I try linear regression, but normal...

    Started by elle1301‎, 07-21-2016 04:14 AM
    khi-2, regression
    • Replies: 5
    • Views: 251
    07-22-2016, 03:13 AM Go to last post
  54. Weighted Cases- Binomial Logistic Regression in SPSS

    I am currently using the HCUP KID federal database which employs discharge weights to better estimate the true number of cases. For example, I have...

    Started by CharTam‎, 07-21-2016 02:34 PM
    • Replies: 0
    • Views: 193
    07-21-2016, 02:34 PM Go to last post
  55. Interaction term with no biological significance

    Hello friends, I've used a negative binomial GLM to look at how invertebrate abundance (over dispersed) is affected by seagrass density. There...

    Started by lken‎, 07-20-2016 01:47 PM
    • Replies: 3
    • Views: 193
    07-21-2016, 01:05 PM Go to last post
  56. Multiple regression analysis

    Hello All, Please help me with my multiple regression analysis result. My questionnaire consisted of 7 independent variables using 7 point...

    Started by Amrita‎, 07-21-2016 02:56 AM
    • Replies: 0
    • Views: 119
    07-21-2016, 02:56 AM Go to last post
  57. Ordinal mixed model assumptions

    I understand that I can perform a mixed model with ordinal outcome in spss using GENLINMIXED command I just want to know what are the assumptions...

    Started by wadder‎, 07-20-2016 04:48 PM
    • Replies: 0
    • Views: 108
    07-20-2016, 04:48 PM Go to last post
  58. interpreting interaction terms

    Hello, I hope that someone may be able to provide some help in my research. I have a 3-way interaction gender (male 0, female 1) by black (black...

    Started by derekcruise‎, 07-17-2016 01:25 PM
    • Replies: 7
    • Views: 342
    07-19-2016, 07:18 AM Go to last post
  59. I cant think of the name of a function.

    Hi all. this is my first post on talkstats. I'll try to be brief. I remember learning about comparing the top 30% and bottom 30% of results to...

    Started by igneggo‎, 07-19-2016 05:48 AM
    • Replies: 0
    • Views: 156
    07-19-2016, 05:48 AM Go to last post
  60. Analysing a designed experiment - is the theory wrong?

    hi, just had a scary thought . in all industrial DoEs we definitely have measurement error on the IVs. However I have always seen the OLS as the...

    Started by rogojel‎, 07-17-2016 12:06 AM
    • Replies: 11
    • Views: 428
    07-18-2016, 11:07 AM Go to last post

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