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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Research Help_Regression Analysis_Log Transformation for Better Fits

    Dear All, I'm doing a research on the estimation of "Tunnel Cost" for which I carried out some regression analysis based on data of 30 tunnel...

    Started by chro‎, 09-07-2016 12:40 PM
    • Replies: 2
    • Views: 476
    09-07-2016, 02:26 PM Go to last post
  2. Categorical multiple linear regression analysis - what would you do?

    Noob here. I'm doing a project to determine how different factors (race, insurance status) are related to distance from pediatric urologists. I'm...

    Started by gliomanerd‎, 09-01-2016 10:35 AM
    categorial analysis, multiple regression
    • Replies: 4
    • Views: 598
    09-05-2016, 07:16 PM Go to last post
  3. VIF issues

    Good afternoon, I ran a hierarchical regression model, (main effects in step 1, two-way in step 2 and three-way in step 3). My VIF in step 1 are...

    Started by Julie26‎, 09-03-2016 06:24 PM
    • Replies: 5
    • Views: 844
    09-05-2016, 09:16 AM Go to last post
  4. 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: 9
    • Views: 725
    09-03-2016, 03:05 AM Go to last post
  5. Need some ideas

    I need to present something, anything and if anyone has any idea what I can do with this data and how I can pitch it, it would be appreciated. ...

    Started by zayfran31189‎, 09-02-2016 03:47 AM
    • Replies: 1
    • Views: 312
    09-02-2016, 04:39 PM Go to last post
  6. Cave Temperature Analysis, Real life management issues.

    Hi, I've taken math course's up to Calc III and Diff Eq, but never a statistics course. So I was hoping this forum could help me. I am working...

    Started by geoskimoto‎, 09-02-2016 12:13 PM
    anova, help me, help needed, linear regression, model
    • Replies: 0
    • Views: 355
    09-02-2016, 12:13 PM Go to last post
  7. Model conception

    Hello! I have a basic stats question: I want to model a phenomenon, and estimate parameters. How many observations would I need, to be as...

    Started by BioLion‎, 09-01-2016 04:44 AM
    degrees of freedom, dof, model
    • Replies: 0
    • Views: 315
    09-01-2016, 04:44 AM Go to last post
  8. Multivariate responses

    Hey guys, Needed some help on this. Say there is a question what would you spend on : 1) Car 2) House 3) Wedding 4) *** 5) ***

    Started by zayfran31189‎, 08-31-2016 07:48 AM
    • Replies: 1
    • Views: 433
    08-31-2016, 10:17 PM Go to last post
  9. Question Interaction between categorical and scale variables?

    Hi, I'm supposed to conduct a regression analysis between two variables, controlling for a third. My issue is that all of the output I'm getting in...

    Started by phoela‎, 08-31-2016 05:14 AM
    • Replies: 2
    • Views: 389
    08-31-2016, 06:17 AM Go to last post
  10. Regression with data from different sources: Nested fixed effects possible?

    Assume I have collected my data with 3 different methods, each method share the same outcome Y as well as the predictor X. I am interested in the...

    Started by mmercker‎, 08-25-2016 11:42 AM
    • Replies: 2
    • Views: 412
    08-30-2016, 08:24 PM Go to last post
  11. SST = SSE + SSR, proof

    Hi, I've been trying to figure out for a long time how to derive the starting equation of the proof. I have no idea how to come up with it. It's...

    Started by stephen123456‎, 08-27-2016 04:25 PM
    • Replies: 2
    • Views: 1,910
    08-29-2016, 10:39 AM Go to last post
  12. 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, 08-24-2016 03:36 AM
    fit, glm, ols, transforming
    • Replies: 8
    • Views: 701
    08-29-2016, 06:28 AM Go to last post
  13. Question Mixed Logit Regression Problem with AIC / BIC

    Hi, I am new to this forum and have trouble with my mixed logit regression model. I have conducted an experiment with 169 participants who each...

    Started by Maha1987‎, 08-29-2016 06:22 AM
    aic, bic, genlinmixed, mixed logit
    • Replies: 0
    • Views: 469
    08-29-2016, 06:22 AM Go to last post
  14. Why do you divide by n-1 to find sample variance? Linear regression

    Okay I have very limited knowledge on statistics but I'm wondering why the hell you divide the numerator in the sample variance formula by n-1. I've...

    Started by zakqux93‎, 08-28-2016 03:07 PM
    • Replies: 2
    • Views: 835
    08-28-2016, 03:31 PM Go to last post
  15. Question R-squared and Standard Error of weights focuses too much on centre of distribution

    Hello, I got slides from A.Pelsser presentation about replicating portfolios and there was a claim that R-squared na Standard Error of Weights...

    Started by Rutra1992‎, 08-28-2016 04:42 AM
    r-squard, replicating portfolios, standard error of weights
    • Replies: 0
    • Views: 520
    08-28-2016, 04:42 AM Go to last post
  16. Lightbulb Regression Analysis thoughts - Could I model my data this particular way?

    Hello, Looking for a guidng hand with a regression problem that I have managed to create. Apologies for my lack of statistical knowledge, but if...

    Started by Smith_83‎, 08-26-2016 11:37 AM
    • Replies: 1
    • Views: 422
    08-26-2016, 01:20 PM Go to last post
  17. Forecasting, what method to use

    I am stuck on what statistical analysis method I can use to forecast using past data. This is for a Hotel that has been open for four months, I...

    Started by Lukejames‎, 08-26-2016 07:56 AM
    • Replies: 1
    • Views: 439
    08-26-2016, 08:53 AM Go to last post
  18. 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
    2 Pages
    1 2
    • Replies: 17
    • Views: 1,148
    08-25-2016, 01:10 AM Go to last post
  19. 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: 568
    08-24-2016, 10:38 AM Go to last post
  20. 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, 08-24-2016 12:21 AM
    • Replies: 2
    • Views: 445
    08-24-2016, 04:21 AM Go to last post
  21. 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, 08-24-2016 04:00 AM
    adf, schwert, var
    • Replies: 0
    • Views: 314
    08-24-2016, 04:00 AM Go to last post
  22. 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: 706
    08-23-2016, 04:57 AM Go to last post
  23. 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: 750
    08-22-2016, 06:52 PM Go to last post
  24. 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: 496
    08-20-2016, 08:58 PM Go to last post
  25. 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: 483
    08-20-2016, 04:52 PM Go to last post
  26. 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: 636
    08-20-2016, 06:13 AM Go to last post
  27. 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: 302
    08-20-2016, 01:41 AM Go to last post
  28. 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: 546
    08-19-2016, 03:40 PM Go to last post
  29. 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: 329
    08-19-2016, 01:28 PM Go to last post
  30. 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: 222
    08-19-2016, 05:25 AM Go to last post
  31. 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: 425
    08-17-2016, 10:32 PM Go to last post
  32. 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: 428
    08-17-2016, 01:51 PM Go to last post
  33. 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: 496
    08-17-2016, 12:59 PM Go to last post
  34. 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: 285
    08-16-2016, 05:35 PM Go to last post
  35. 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: 374
    08-16-2016, 11:55 AM Go to last post
  36. 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: 414
    08-15-2016, 01:13 PM Go to last post
  37. 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: 559
    08-15-2016, 07:25 AM Go to last post
  38. 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: 546
    08-15-2016, 04:10 AM Go to last post
  39. 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: 764
    08-13-2016, 01:41 PM Go to last post
  40. 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: 610
    08-08-2016, 10:49 PM Go to last post
  41. 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: 897
    08-08-2016, 11:38 AM Go to last post
  42. 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: 547
    08-08-2016, 09:31 AM Go to last post
  43. 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: 700
    08-04-2016, 07:18 PM Go to last post
  44. 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: 640
    08-03-2016, 09:50 PM Go to last post
  45. 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: 441
    08-03-2016, 01:46 PM Go to last post
  46. 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: 367
    08-03-2016, 12:13 PM Go to last post
  47. 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: 431
    08-03-2016, 10:49 AM Go to last post
  48. 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: 749
    08-02-2016, 09:55 PM Go to last post
  49. 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: 303
    08-02-2016, 10:49 AM Go to last post
  50. 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: 470
    08-02-2016, 02:42 AM Go to last post
  51. 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: 1,168
    08-01-2016, 08:16 AM Go to last post
  52. 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: 395
    07-31-2016, 03:17 PM Go to last post
  53. 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: 354
    07-31-2016, 05:24 AM Go to last post
  54. 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: 653
    07-29-2016, 07:05 PM Go to last post
  55. 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: 658
    07-28-2016, 06:30 AM Go to last post
  56. 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: 384
    07-28-2016, 02:48 AM Go to last post
  57. 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: 404
    07-28-2016, 02:44 AM Go to last post
  58. 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: 481
    07-28-2016, 02:05 AM Go to last post
  59. 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: 305
    07-27-2016, 02:00 PM Go to last post
  60. 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: 570
    07-27-2016, 12:37 PM Go to last post

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