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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Expert Help Required - Multiple Regression with Nominal and Scale Variables

    Hi all, I'm having huge issues with the assumptions of multiple regression and determining whether I am running my analysis correctly. First of...

    Started by Aegislash‎, 02-27-2017 05:28 AM
    dummy coding, multiple regression, nominal, scale
    • Replies: 4
    • Views: 1,796
    02-27-2017, 01:25 PM Go to last post
  2. logistic regression and ordinal logistic regression

    Hi, I am currently studying the ordinal logistic regression. I want to ask: is there a relationship between logistic regression with logistic...

    Started by Pamona D‎, 02-27-2017 08:17 AM
    logistic regression
    • Replies: 2
    • Views: 1,578
    02-27-2017, 11:01 AM Go to last post
  3. Whether to Include Treatments with 0 means Nonlinear Modeling

    Hi, I'm trying to compare the effect of temperature on developmental rate using various nonlinear models. The temperatures range 10-35 degrees C....

    Started by nebulus‎, 02-23-2017 11:21 PM
    • Replies: 0
    • Views: 1,215
    02-23-2017, 11:21 PM Go to last post
  4. confidence interval and p value

    dialysis Odds Ratio Std. Err. z P>z logintercept .0001105 .0003682 -2.73 0.006 1.61e-07 .0756841 Dear , I am have...

    Started by tommyvcc‎, 02-23-2017 06:49 AM
    • Replies: 2
    • Views: 1,840
    02-23-2017, 08:30 PM Go to last post
  5. Exclamation Instrumental variables with S&P 500 Health Care Index

    Hello everyone, I am new to this forum and I would need some help on a time series regression model with financial variables. I am regressing...

    Started by AstosDG‎, 02-21-2017 04:19 PM
    instrumental variables, time series analysis
    • Replies: 3
    • Views: 1,746
    02-23-2017, 08:26 PM Go to last post
  6. regression analysis for very small sample?

    hello, my study is about "The impact of corporate governance on firm performance". my sample size is 5 compagnies i have 6 IV and 1 DV so my Q...

    Started by ilyes‎, 02-20-2017 01:52 PM
    alternative, regerssion analysis, sample size
    • Replies: 7
    • Views: 2,013
    02-21-2017, 04:32 PM Go to last post
  7. Smile Very Small Sample Size -What multivariate analysis should be used

    Dear all, Good day! I'm having a hard time researching for possible multivariate analysis to be used in my study. I have less than 10 sample...

    Started by Gibi‎, 09-18-2012 05:39 AM
    regression analysis, small sample size
    • Replies: 6
    • Views: 8,832
    02-20-2017, 01:34 PM Go to last post
  8. Minimisation of specific residuals

    Hello, I hope that I can finde someone here to help me with the following problem: I have 11 points with x and y values. Those points are...

    Started by humic‎, 02-08-2017 07:49 AM
    • Replies: 7
    • Views: 2,316
    02-20-2017, 04:43 AM Go to last post
  9. Dynamic panels

    Did someone have done a serious work/report on dynamic panel with stata or Eviews? Ibegin in this field for my PHD.Please email...

    Started by canfly‎, 02-15-2017 05:58 PM
    • Replies: 0
    • Views: 1,750
    02-15-2017, 05:58 PM Go to last post
  10. How to get a relationship equation in between variables of a multi-physics problem?

    I have a multiphysics problem in which my output voltage data is dependent on the input oscillation frequency. There are four physics coupled in the...

    Started by sajiree‎, 02-10-2017 03:41 PM
    • Replies: 1
    • Views: 1,077
    02-10-2017, 05:36 PM Go to last post
  11. Got some questions on simple regression

    Hello everybody! I'm learning how to use SAS program and I have some questions when I got this ANOVA (view pic) - Are the two parameters estimated...

    Started by ElijahWood‎, 02-08-2017 12:36 PM
    • Replies: 4
    • Views: 1,920
    02-08-2017, 10:20 PM Go to last post
  12. Univariate x multivariate model

    Hello everyone! I just started modelling and I have a question about how to interpret my results. I built 3 models, two univatiates (Z ~ bX +...

    Started by Marive‎, 02-08-2017 05:24 PM
    multivariate analysis, regression analysis, univariate
    • Replies: 0
    • Views: 1,289
    02-08-2017, 05:24 PM Go to last post
  13. Winsorizing when I have different size groups

    I have a sample that consists of large, medium, and small firms and i want to run a separate regression for each size group. When I winsorize a...

    Started by 12345678‎, 02-03-2017 04:41 AM
    outliers
    • Replies: 0
    • Views: 1,802
    02-03-2017, 04:41 AM Go to last post
  14. Forecast Analysis Inquiry

    Im trying to perform some time series analysis on 2015 and 2016 monthly recorded data to see what method is best for forecasting 2016 monthly values...

    Started by lokelyokel‎, 10-26-2016 08:09 AM
    forecast, forecast error, regression analysis, winters method
    • Replies: 1
    • Views: 2,069
    02-01-2017, 02:15 AM Go to last post
  15. Which forecast method for a time series like this one?

    Hi everyone, I do have a time series composed by 45 monthly observations and I am trying to figure out which kind of forecasting method is best...

    Started by Mark_‎, 10-11-2016 10:05 AM
    • Replies: 10
    • Views: 2,871
    01-31-2017, 05:36 PM Go to last post
  16. Binary Logistic Regression

    Hello, I'm new here. I have got the following problem: - my dependent variable is dichotomous: male / female - my independent variable: how...

    Started by SandroM‎, 01-30-2017 05:02 PM
    • Replies: 0
    • Views: 1,605
    01-30-2017, 05:02 PM Go to last post
  17. Comparing beta's of different regression analyses for significance

    Hi all, I have been struggling with this for a while now, so I really hope one of you can help me out: I am trying to compare two different...

    Started by anneb‎, 01-30-2017 02:14 PM
    • Replies: 2
    • Views: 1,825
    01-30-2017, 03:42 PM Go to last post
  18. robust regression estimators

    Hi everyone. I have studied the robust regression a few weeks ago and I want to have a lot of insight about it. After reading some sources, I know...

    Started by Pamona D‎, 01-30-2017 08:23 AM
    regression analysis, robust linear regression
    • Replies: 2
    • Views: 2,643
    01-30-2017, 11:00 AM Go to last post
  19. Anova/Linear regression

    I have two datasets, one collected by one instrument, say A, and one by another, say B, at the same time. I need to use instrument B to calibrate...

    Started by jenny_stats‎, 01-30-2017 05:45 AM
    • Replies: 0
    • Views: 1,692
    01-30-2017, 05:45 AM Go to last post
  20. Estimate Residuals

    Hi statistics experts, I run a usual regression model (1 dependent, different independent variables) for each industry-year and save the residuals...

    Started by M90‎, 01-29-2017 05:31 AM
    • Replies: 2
    • Views: 1,990
    01-29-2017, 12:03 PM Go to last post
  21. SPSS: regression analysis for 3x2 experiment. How to test for interaction

    Dear all, For my research I have the following facts: - I have two categorical IVs: - treatment condition called competition, which has...

    Started by Ricovermeulen‎, 01-25-2017 09:39 AM
    3x2, anova, experiment, regression
    • Replies: 4
    • Views: 2,527
    01-29-2017, 04:19 AM Go to last post
  22. Help: regression analysis for categorical/binary exposure

    Cell biologist in need of stats help! I am using stata to analyse my data and have two questions: 1. I have a continuous outcome (hippocampal...

    Started by Leucine‎, 01-28-2017 07:50 PM
    • Replies: 3
    • Views: 2,239
    01-28-2017, 11:45 PM Go to last post
  23. Logistic Regression on SAS, all variables I put in to test are showing up as insignif

    Hello, I need help really badly. I am using SAS to do my statistical modelling. I have several different categorical variables with the...

    Started by shivu‎, 01-27-2017 07:46 PM
    • Replies: 2
    • Views: 2,223
    01-27-2017, 09:49 PM Go to last post
  24. Comparison of Coefficients of two different Regression Models

    Hi everyone, I am analyzing the impact of price and promotion activities on sales in two separate 2-Way-Fixed Effects models. One model is for...

    Started by LariB‎, 01-23-2017 04:08 AM
    • Replies: 4
    • Views: 2,579
    01-27-2017, 03:53 PM Go to last post
  25. Exp(B) or CI values with the letter "E"

    Dear all, I am running a Multinomial Log. Regression. Everything seems fine but I do not understand when Exp(B) oder CI values are like...

    Started by rezzak‎, 01-26-2017 04:42 AM
    confidence interval, exp(b), logistic regression
    • Replies: 6
    • Views: 2,826
    01-27-2017, 11:42 AM Go to last post
  26. Beta significance level in one model the same as the R-squared-change significance

    I am very new to statistics, so apologies in advance if I have not explained this clearly. I have run two types of linear regression: - The...

    Started by francyb‎, 01-23-2017 05:03 PM
    beta, linear regression, regression, signifiance
    • Replies: 1
    • Views: 2,588
    01-24-2017, 10:50 AM Go to last post
  27. what to do with "bad" logistic regression results

    I ran a simple logistic regression in R and here are my results. my independent variables are all "counts" and I coded my Y as 0 and 1. This is a...

    Started by semidevil‎, 01-18-2017 04:16 PM
    • Replies: 9
    • Views: 3,533
    01-23-2017, 12:18 PM Go to last post
  28. 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: 4
    • Views: 3,306
    01-23-2017, 11:16 AM Go to last post
  29. I think this is a simple question but I can't seem to find it in my stats book

    I have a linear regression equation (y=6.0707x-1200.2) that was used to develop 50 point estimates. The sum of these estimates is the point estimate...

    Started by bugle4one‎, 01-19-2017 11:27 AM
    • Replies: 12
    • Views: 3,007
    01-20-2017, 02:29 PM Go to last post
  30. im a newbie and i need some help with regression :(

    kayy... masters student here :wave: im so lost in my statistical analysis and my supervisor isn't really helpful :( for my model i have 3...

    Started by jkerr1‎, 01-20-2017 08:01 AM
    • Replies: 1
    • Views: 2,664
    01-20-2017, 12:30 PM Go to last post
  31. How to investigate a curvilinear relationship? (power curve?)

    Hi there, Can anyone tell me how to explore this relationship on SPSS using a regression analysis? I have been advised that this relationship...

    Started by crook‎, 01-19-2017 01:01 PM
    • Replies: 13
    • Views: 2,764
    01-19-2017, 11:57 PM Go to last post
  32. Deriving further values from regression coefficients

    Hi, Iím hoping someone can help me. Iím trying to derive another value from the coefficients of two regression equations. I have 2 regression...

    Started by Noble‎, 01-19-2017 09:43 AM
    cauchy, coefficients, regression
    • Replies: 0
    • Views: 1,690
    01-19-2017, 09:43 AM Go to last post
  33. Math Help: How to Calculate Weights for Multiplicative Model with Dummy Variables

    Hi Everyone, My question is how do I calculate weights for Y=W1X1*W2X2*WNXN where N is the number of independent variables. I could use...

    Started by CharlieBombay‎, 01-18-2017 11:52 AM
    coefficients, math, predictive model
    • Replies: 1
    • Views: 2,262
    01-18-2017, 04:51 PM Go to last post
  34. How can this be true [linear versus logistic regression]

    This comes from a government study that was used to generate something of great importance, funding and related factors for a major government...

    Started by noetsi‎, 01-07-2017 01:31 PM
    2 Pages
    1 2
    • Replies: 17
    • Views: 5,689
    01-15-2017, 02:51 PM Go to last post
  35. Can data be classified as count data?

    Hi, I have a dataset spanning two years which consists of individuals entering some process. Once they have entered this process I want to predict...

    Started by Mkkl‎, 01-15-2017 05:25 AM
    count data, negative binomial, poisson
    • Replies: 2
    • Views: 2,387
    01-15-2017, 08:38 AM Go to last post
  36. How to Fit polynomial regression by bootstrap and establishing IC of each parameters

    #Hi everybody and excuse me for my bad english for this request on R. #here parameter of an hypothetical interval : ...

    Started by philippe‎, 01-13-2017 08:28 PM
    bootstrap, regression analysis, regression coefficent, routine r
    • Replies: 0
    • Views: 1,752
    01-13-2017, 08:28 PM Go to last post
  37. growth curve models

    hi all, suppose my outcome is total yearly savings ($). i want to use growth curve models to see how 4 different groups change in their savings...

    Started by leonedelman‎, 01-13-2017 06:41 AM
    growth curve models
    • Replies: 0
    • Views: 2,172
    01-13-2017, 06:41 AM Go to last post
  38. Random slopes

    Dear experts, When should I include random slopes in my non-linear mixed effects model? Is it solely when it results in a better Log...

    Started by Palermo‎, 01-12-2017 10:49 PM
    • Replies: 0
    • Views: 1,798
    01-12-2017, 10:49 PM Go to last post
  39. Checking temporal dependency

    Hi guys, this is my problem: I have performed some experimental tests (tomographies) on 40 samples. These samples are made by four different...

    Started by dado92‎, 01-11-2017 12:10 PM
    temporal dependency
    • Replies: 2
    • Views: 2,416
    01-11-2017, 01:12 PM Go to last post
  40. Dealing with temporal autocorrelation

    Hi, assume we have a measured value for each year from 1990-210, and we want to estimate a linear trend. Now there is a problem of...

    Started by mmercker‎, 01-10-2017 03:22 AM
    additive, autocorrelation, gam, regression, trend
    • Replies: 2
    • Views: 2,521
    01-10-2017, 11:39 AM Go to last post
  41. Question Mediation Output with Process

    Hi, I am investigating a variable for its effect as a mediator with SPSS and Process but I have problems interpreting the output. First I...

    Started by StatStud‎, 01-10-2017 08:08 AM
    mediation, process
    • Replies: 0
    • Views: 3,008
    01-10-2017, 08:08 AM Go to last post
  42. What is spatial regression?

    This is the first time I have heard of this technique . They are concerned with what they call spatial issues, for example how rural versus urban...

    Started by noetsi‎, 01-09-2017 09:47 AM
    • Replies: 6
    • Views: 2,411
    01-09-2017, 02:41 PM Go to last post
  43. Statistical inference.

    Hi there, I would like to ask a couple of basic questions: 1. What is the difference between estimation and hypothesis testing? I mean are they...

    Started by Abubaker‎, 01-08-2017 06:25 AM
    hypothesis testing, model selection, modeling techniques, statistical inference
    • Replies: 1
    • Views: 2,375
    01-09-2017, 02:01 PM Go to last post
  44. Individual versus aggregate regression

    What is the difference between doing regression at an individual versus a aggregate level This is an example of what I am talking about for...

    Started by noetsi‎, 01-07-2017 02:09 PM
    • Replies: 0
    • Views: 2,511
    01-07-2017, 02:09 PM Go to last post
  45. I want to learn to create ARX, ARMAX, Box-Jenkins and Output-Error

    Hello. I'm am a control engineer and I want to upgrade my skills in simulation of dynamic physical systems. Normaly I describe my physical system...

    Started by Volvo742‎, 01-06-2017 08:22 AM
    • Replies: 8
    • Views: 2,971
    01-07-2017, 12:43 PM Go to last post
  46. 'e' in expected values in Poisson

    Using this example (see below) could someone please tell me what the 'e' symbol stands for and how one would work out the expected values manually. ...

    Started by sarahharding‎, 01-05-2017 11:44 AM
    expected values, poisson distribution, poisson regression, symbols
    • Replies: 1
    • Views: 2,276
    01-05-2017, 02:43 PM Go to last post
  47. Question Data input- ordered logistic regression

    Hello, I am trying to analyze the relationship between mode familiarity and Technology & demographic characteristics. So I have an ordinal dependent...

    Started by paranjyoti‎, 01-05-2017 09:09 AM
    data analysis, logistic regression, regression analysis, spss
    • Replies: 0
    • Views: 1,627
    01-05-2017, 09:09 AM Go to last post
  48. Regression analysis in R - which variables to include?

    Hi all, I am doing causal research between the relation between a dependent variable Y which consists of 4 phases (so 4 dependent variables Y1,...

    Started by koot6133‎, 01-05-2017 07:45 AM
    correlation, multiple regression, selection of variables
    • Replies: 0
    • Views: 1,915
    01-05-2017, 07:45 AM Go to last post
  49. Is Using an Explanatory Variable that Defines My X-Y Pairs Correct ??

    Hello My question is basic I guess: My data looks like this: obs date Y X 1 1/1/2010 5.6 3 2 1/2/2010 7.9 5 3 ...

    Started by Meytar‎, 01-03-2017 02:45 PM
    • Replies: 0
    • Views: 2,364
    01-03-2017, 02:45 PM Go to last post
  50. Cool weird difference between measures of Goodness-of-Fit ??

    Dear stats friends I have run an ordinal regression in SPSS on 700 subjects I have data on an ordinal DV: heart disease score between 0 and 3. ...

    Started by wulfgar‎, 12-30-2016 12:38 PM
    • Replies: 2
    • Views: 3,196
    12-30-2016, 12:45 PM Go to last post
  51. Complicated Research quesiton

    Im looking to do some research in the social science field and I have to do a statistical analysis of a complicated set of self report measures. I'd...

    Started by danmpc‎, 12-28-2016 06:52 AM
    • Replies: 8
    • Views: 3,362
    12-30-2016, 12:33 PM Go to last post
  52. Post Calculating the multiple regression function via canonical correlation analysis

    I've got one dependent variable and two independent variables. I need to calculate the multiple regression function via canonical correlation...

    Started by floflo‎, 12-29-2016 02:35 PM
    canonical, canonical analysis, eigenvalue, multiple regression, svd
    • Replies: 0
    • Views: 2,399
    12-29-2016, 02:35 PM Go to last post
  53. ANOVA - Does Welch's test assume homogeneity of variances, or not?

    In other words, will it return a much smaller standard error when variance are unequal than Fisher's? Or is it not concerned with variance?

    Started by bikingman‎, 12-28-2016 04:02 PM
    anova
    • Replies: 3
    • Views: 2,328
    12-28-2016, 09:46 PM Go to last post
  54. General linear model and residuals

    Hi, i'm using SPSS for analysis of my data using general linear model with 3 independet factors (2 levels each) and one independent ordinal factor (4...

    Started by igsimoes‎, 12-26-2016 12:55 PM
    • Replies: 0
    • Views: 2,367
    12-26-2016, 12:55 PM Go to last post
  55. How to Compare B Coefficients within and between models in R?

    Hello people, I am new to this forum and it would be great if some experienced people could help met out. I would like to know what the...

    Started by KevinAdam‎, 12-24-2016 05:00 PM
    • Replies: 1
    • Views: 3,099
    12-25-2016, 04:16 AM Go to last post
  56. Newbie needs some help with his model interpretation

    Hello, i am quite new in the world of statistical problems :) I have read some lecture notes and books to solve my current problem, but i am note...

    Started by R_Newcomer‎, 12-24-2016 09:52 AM
    • Replies: 0
    • Views: 2,699
    12-24-2016, 09:52 AM Go to last post
  57. Regression on estimated variables

    I'm making a two-step analysis for my data. First Step: I've collected inflation and interest rate data for 25 countries in a monthly frequency...

    Started by glima‎, 12-22-2016 08:18 AM
    measurement error, regression, standard errors
    • Replies: 2
    • Views: 2,592
    12-23-2016, 09:52 AM Go to last post
  58. Beginner's question: Is profit/loss data always ratio in nature? How to treat it?

    Hello, I'm afraid this is another beginner's question. I've only recently grasped the fundamentals of linear and multiple linear regression and I...

    Started by MrPink‎, 12-21-2016 08:43 AM
    beginner, lineal model, ratio
    • Replies: 3
    • Views: 2,535
    12-21-2016, 06:06 PM Go to last post
  59. Random intercept only for 1 subgroup in lmer

    Dear all, suppose I have a case study with 3 different populations, A, B and C. For all groups I have data on, e.g. body mass, length and sex of a...

    Started by Luke‎, 12-21-2016 03:30 AM
    • Replies: 2
    • Views: 2,695
    12-21-2016, 12:12 PM Go to last post
  60. Calculating probabilities from logit parameters estimated with effect coding

    Hello, I calculated this multinomial logit model using an effect coding (-1 0 1). The variable edu3 is the education level (3 categories), sex has...

    Started by Demographer‎, 12-21-2016 03:39 AM
    • Replies: 0
    • Views: 2,001
    12-21-2016, 03:39 AM Go to last post

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