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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Question HLM - non-linear IV and placement of individual characteristics in the model

    Hi all! I am working on my dissertation and run across a couple of questions when structuring HLM model. The data looks as follows: I conducted an...

    Started by doroshishka‎, 06-22-2017 05:04 PM
    categorical variables, hlm, variable in model
    • Replies: 0
    • Views: 61
    06-22-2017, 05:04 PM Go to last post
  2. between-subject variation PROC MIXED in SAS

    I haven't used mixed models for long and can't remember much about it. So here's a silly question. Suppose below is my program to model a repeated...

    Started by sunny3333‎, 06-21-2017 12:50 PM
    • Replies: 1
    • Views: 131
    06-22-2017, 04:58 PM Go to last post
  3. Exclamation How to use Regression to solve this task

    Hi, I am new to statistics and in uni we use SPSS to solve statistical problems. I have difficulty to orientate how to solve a problem with...

    Started by Kris_stat‎, 06-17-2017 09:08 AM
    • Replies: 1
    • Views: 224
    06-17-2017, 09:50 AM Go to last post
  4. Unbalanced ANCOVA

    Hi all, I have data in this format: 2 independent variables: 1 factor with 3 levels (3 different locations) ...

    Started by smed‎, 06-12-2017 10:03 AM
    • Replies: 0
    • Views: 226
    06-12-2017, 10:03 AM Go to last post
  5. Distribution of fixed effects

    Hi all, Let me shortly introduce my research: I am looking at whether companies outperform each other in investments. To do this I observe them at...

    Started by daniel_smit‎, 06-09-2017 05:07 AM
    distribution, fixed effect model, normal distributed, panel data
    • Replies: 3
    • Views: 268
    06-09-2017, 11:56 AM Go to last post
  6. Multiple rows per respondent

    Hey everyone, I have 6 rows of data per respondent and I'd like to perform a linear regression analysis. I'm just not sure about 1 thing. My...

    Started by Giorgi‎, 06-08-2017 02:47 PM
    • Replies: 2
    • Views: 199
    06-09-2017, 05:29 AM Go to last post
  7. Compare regression coefficients of two settings with similar samples

    Dear Statisticians, For my thesis I am currently examining whether the accounting principles have an influence on the relation between having a...

    Started by Daniel_W‎, 06-09-2017 03:32 AM
    • Replies: 0
    • Views: 125
    06-09-2017, 03:32 AM Go to last post
  8. Comparing effect sizes of two longitudinal linear relationships

    Is there a way to determine if one longitudinal linear relationship is significantly stronger than another? I was planning on using regression...

    Started by dbt_healthpsych‎, 06-08-2017 12:51 PM
    effect sizes, longitudinal data, moderated multiple regres
    • Replies: 2
    • Views: 110
    06-08-2017, 10:16 PM Go to last post
  9. Trichotomizing an Independent Variable

    In SPSS, how does one go about trichotomizing an independent variable such that about 33% are in each of the three groups?

    Started by langood‎, 06-08-2017 11:54 AM
    linear regression, multiple regression, trichotomize
    • Replies: 4
    • Views: 171
    06-08-2017, 06:19 PM Go to last post
  10. Regression: Multiple Independent Variables by Year

    Hello All! First time here and working in SPSS. I'm having a difficult time running a regression using test score proficiency as my dependent...

    Started by BF_Grad‎, 06-06-2017 05:42 PM
    • Replies: 1
    • Views: 226
    06-07-2017, 02:33 PM Go to last post
  11. When are residual plots ok?

    In general you want a random scatter in the residuals. You want no obvious patterns. I know that is the theory. But what does that really mean in...

    Started by noetsi‎, 06-05-2017 06:46 PM
    • Replies: 2
    • Views: 258
    06-05-2017, 09:44 PM Go to last post
  12. Regression Analysis

    Hey everyone, I have a regression model where I have as a dependent variable daily stock prices over 365 days for multiple stocks. I am...

    Started by Tartaglia‎, 06-05-2017 02:44 PM
    • Replies: 2
    • Views: 212
    06-05-2017, 03:35 PM Go to last post
  13. Multiple regression V.S. Bivariate regression

    Hi there, I'm interested in the effect of several variables on severity of schizophrenia symptoms. I want to look at the effect of 9 predictor...

    Started by the_gentle_ninja‎, 06-03-2017 08:39 PM
    bivariate regression, linear regression, multiple regression, regression
    • Replies: 3
    • Views: 268
    06-05-2017, 08:32 AM Go to last post
  14. Master thesis, statistics check!

    About me: Medical student with minimal statistical knowledge or research experience Question related to: statistical regression/correlation...

    Started by DutchMedicalStudent‎, 05-22-2017 09:30 AM
    blinded data, correlation, master thesis, spearman correlation
    • Replies: 12
    • Views: 915
    06-02-2017, 03:24 AM Go to last post
  15. Question Analyzing Tagged Content: Is a Multiple Regression Analysis the Right Approach?

    I’m working with a relatively small data set that consists of several hundred social media posts, key engagement metrics and up to 10 content “tags”...

    Started by stupidpoeticjustice‎, 06-01-2017 02:09 PM
    marketing, regression analysis, social network, statistics
    • Replies: 1
    • Views: 194
    06-02-2017, 12:10 AM Go to last post
  16. Repeated measures question

    Hello. I have taken day to day repeated measures in number of predictor variables as well as some other ordinal dvs. I want to meaure the effect of...

    Started by LEMONIAS‎, 11-20-2016 06:56 PM
    • Replies: 6
    • Views: 2,124
    05-31-2017, 04:14 AM Go to last post
  17. Seeking advise on predictive modeling approach

    Hello dear forum members! Currently, I am working on a project that aims to predict a certain cancer-related outcome (y) using a number of control...

    Started by kiton‎, 05-30-2017 12:08 PM
    • Replies: 3
    • Views: 271
    05-30-2017, 05:27 PM Go to last post
  18. Seek non-black box alternative to random forest

    I've recently had a research manuscript rejected by an editor. The manuscript showed that for a real life data set, random forest outperformed...

    Started by abendrot‎, 05-30-2017 11:04 AM
    • Replies: 1
    • Views: 193
    05-30-2017, 11:55 AM Go to last post
  19. Regression for river level prediction

    I am an avid whitewater kayaker. Many streams have US Geological Survey (USGS) gauges on them. However, some of the best do not. I would like to...

    Started by RhythmanJoe‎, 05-29-2017 11:09 PM
    • Replies: 1
    • Views: 254
    05-30-2017, 09:00 AM Go to last post
  20. Regression

    Hi How I can use regression analysis?

    Started by Kimudao‎, 05-27-2017 11:46 PM
    • Replies: 2
    • Views: 254
    05-28-2017, 09:41 PM Go to last post
  21. Question R square read with or without confounder in the analysis

    Hey, My bachelor thesis is about fatigue, nausea and cognitive decline in patients who have head and neck radiation. For example, the dependent...

    Started by lisa177‎, 05-27-2017 07:35 AM
    confounders, multivariable, r square
    • Replies: 2
    • Views: 277
    05-28-2017, 06:38 AM Go to last post
  22. Question Logistic regression with both positive and negative values for independent variable?

    Hi guys, I have a general regression question. Is there an issue with doing a logistic regression with both positive and negative values in the...

    Started by thenewcat‎, 05-27-2017 10:45 AM
    • Replies: 2
    • Views: 290
    05-27-2017, 01:12 PM Go to last post
  23. Deviance residuals in model fitted via MCMC

    I fitted a regression model in a Bayesian approach via MCMC. The JAGS code for the model is model{ for(i in 1:n) { y ~ dbeta(alpha, beta) alpha...

    Started by askazy‎, 05-26-2017 09:39 PM
    • Replies: 0
    • Views: 205
    05-26-2017, 09:39 PM Go to last post
  24. linear regression practice

    I wanted to check over my answers based on these questions Thanks (1) True/False: Clustering is an unsupervised learning problem. (2) ...

    Started by shane414‎, 05-21-2017 06:07 AM
    regression analysis
    • Replies: 2
    • Views: 501
    05-26-2017, 01:20 AM Go to last post
  25. Question Interpretation of Logistic Regression with Python, Pandas & Statsmodel

    Hi guys, I am new to regression analysis and I am trying to figure out how to interpret my results. I basically did a logit regression in Python...

    Started by thenewcat‎, 05-23-2017 04:16 PM
    • Replies: 8
    • Views: 385
    05-24-2017, 03:30 PM Go to last post
  26. Bootstrapping pairwise not listwise, a problem with N

    Hi! Hoping someone more statistically minded can help. I have a number of variables with different N (they are performance measures and some...

    Started by walrusandpossum‎, 05-23-2017 11:40 PM
    bootstrapping, correlation analysis, regression analysis
    • Replies: 1
    • Views: 243
    05-24-2017, 11:01 AM Go to last post
  27. Clustering

    i) T/F:Principal Components Analysis can be used to create a low dimensional projection of the data for use with clustering. For this one above, I...

    Started by maryjkluther23‎, 05-24-2017 03:25 AM
    regression
    • Replies: 0
    • Views: 232
    05-24-2017, 03:25 AM Go to last post
  28. SAS question

    Hi all, I was stuck on the following. I explained it below, my approach, and would appreciate any help. Thanks so much. 1) T/F: Common factors...

    Started by maryjkluther23‎, 05-24-2017 03:20 AM
    • Replies: 0
    • Views: 211
    05-24-2017, 03:20 AM Go to last post
  29. Exponential Smoothing and how it Relates to Changing Seasonality Cycle Intervals

    How does exponential smoothing treat seasonality when there are different time intervals to the seasonality. It seems that I have to designate a...

    Started by TollemG‎, 05-23-2017 04:01 PM
    • Replies: 0
    • Views: 203
    05-23-2017, 04:01 PM Go to last post
  30. Exclamation Problem with results in ordinal regression...

    Hello and thanks in advance for any response... I have 60 likert-type questions (5 items) (and their responses of course...) and age. Age as raw...

    Started by Afrodite‎, 05-15-2017 09:42 AM
    ordinal regression
    • Replies: 3
    • Views: 394
    05-22-2017, 08:44 PM Go to last post
  31. Linear regression / trend question - basic question

    Sorry for basic question: I have a series of measurements taken at weekly intervals for a period of 20 weeks. Each measurement is a proportion:...

    Started by tonytheviking‎, 05-16-2017 03:20 AM
    • Replies: 6
    • Views: 481
    05-19-2017, 09:07 AM Go to last post
  32. Question Whats is the method to analyze characteristics from two groups?

    Hello there, Im new in the statistics world and i hope that you can help me. i have two groups of sample that are divided by one y (depended)...

    Started by Paulo663636‎, 05-18-2017 09:21 PM
    cluster, grouo, model, predictive
    • Replies: 3
    • Views: 267
    05-19-2017, 08:25 AM Go to last post
  33. Having trouble with my units in regression analysis.

    Hello, I am attempting to regress future currency returns against changes in economic variables (GPD, inflation, index values etc). I am having some...

    Started by regressor96‎, 05-17-2017 05:07 PM
    • Replies: 0
    • Views: 274
    05-17-2017, 05:07 PM Go to last post
  34. Excel - is this a reliable data

    Hello I have got a data set that i am using the regression tool on and I just cant clarify to my self if this data if good enough or not. Nr. 1 :...

    Started by hlynur11‎, 05-16-2017 11:03 AM
    • Replies: 1
    • Views: 257
    05-16-2017, 11:51 AM Go to last post
  35. Variation in significance Categorical Regression Analysis (CATREG)

    Hello, I am doing Categorical Regression Analysis (CATREG) with SPSS. However, every time i run the analysis, the standard error and p-value vary...

    Started by mfi_shakil‎, 05-15-2017 09:44 AM
    catreg, spss
    • Replies: 4
    • Views: 325
    05-16-2017, 11:03 AM Go to last post
  36. Comparing regression coefficients between two groups –> violation of independence?

    Hi all, I have a question about the comparison of regression coefficients of two groups (using SPSS) and I think this is the correct sub forum for...

    Started by greetprofeet‎, 02-11-2017 08:42 AM
    • Replies: 1
    • Views: 1,189
    05-15-2017, 03:47 PM Go to last post
  37. Condition to put regression analysis zero?

    Under what situation intercept can be force to zero in regression analysis?

    Started by Meenakshi Tiwari‎, 05-13-2017 02:34 AM
    • Replies: 11
    • Views: 597
    05-14-2017, 10:36 PM Go to last post
  38. ARIMA estimation technique

    Hello, I am using SAS to forecast with ARIMA. I need to choose between two methods, conditional least Squares and MLE. Which technique do you...

    Started by schteeke1‎, 05-10-2017 07:27 AM
    arima mle cls
    • Replies: 8
    • Views: 455
    05-13-2017, 01:03 PM Go to last post
  39. When the Outcome and Predictor Variables are (sort of) the same

    Hello, everyone, I am working on a study with sensitive information, so it may suffice only to look at the last two paragraphs for my question,...

    Started by w_scheidel‎, 05-12-2017 10:33 AM
    • Replies: 7
    • Views: 386
    05-12-2017, 07:11 PM Go to last post
  40. Regression Analysis Practice

    I'm working through some practice on regression analysis and wanted to confirm. My attempt is below. Thanks (1) The correlation between two...

    Started by shane414‎, 05-08-2017 04:14 AM
    regression analysis
    • Replies: 3
    • Views: 512
    05-10-2017, 12:00 PM Go to last post
  41. Translate multinomial logit regression parameters into binomial

    Hello, I have those parameters from a multinomial logit regression that explains Education (L/M/H) by language (Dominant/Other Europe/Non-European)....

    Started by Demographer‎, 05-10-2017 06:12 AM
    • Replies: 0
    • Views: 231
    05-10-2017, 06:12 AM Go to last post
  42. Regression projects on Minitab (Fit models using transformations)

    I'm using Minitab to do these projects. I start by making a multiple linear regression model and try to transform it using the calculator. I keep...

    Started by biologist21‎, 05-07-2017 01:57 PM
    • Replies: 1
    • Views: 304
    05-08-2017, 06:37 AM Go to last post
  43. Unhappy Regression with summated scale help

    Hi all, I am having struggles with computing a (hierarchical) regression analysis for my data, and i have a feeling this is due to my variables. I...

    Started by janne1994s‎, 05-07-2017 01:52 PM
    dependent variable, hierarchical regression, multiple regression, regression
    • Replies: 1
    • Views: 274
    05-07-2017, 07:31 PM Go to last post
  44. Understanding pairwise correlation

    Maybe it is the current time, but I have some difficulties understanding what my tutor means (and he is gone on vacation so I can't ask). In my...

    Started by Jazz3‎, 05-03-2017 09:56 AM
    • Replies: 6
    • Views: 538
    05-03-2017, 02:44 PM Go to last post
  45. Does endogeneity affect the R-squared estimated in variance partitioning?

    Hi, I have a likely very simple question but I can’t get my head around the answer. I want to estimate which part of the variance in a firm's...

    Started by Peter Schmid‎, 05-02-2017 06:01 PM
    endogeneity, r-squared, variance partitioning
    • Replies: 1
    • Views: 399
    05-03-2017, 11:07 AM Go to last post
  46. follow up analysis for regression

    I ran 20 services we supply to our customers. I controlled for what seemed obvious things like gender, public support, and severity of disability (we...

    Started by noetsi‎, 05-01-2017 02:34 PM
    • Replies: 8
    • Views: 560
    05-02-2017, 12:04 PM Go to last post
  47. Multiple Regression Help !!

    A team of researchers believed that parental expectations (PE), emotionality (E) and fear of negative evaluation (FNE) promoted social anxiety (SA)....

    Started by shevy‎, 04-29-2017 11:23 AM
    • Replies: 2
    • Views: 367
    05-01-2017, 02:37 PM Go to last post
  48. Variable change from significant to not significant

    I run a multiple regression with 4 main drivers and some control variables. Then I had to run another regression but with six main drivers (of...

    Started by Jazz3‎, 04-09-2017 09:08 AM
    • Replies: 8
    • Views: 722
    05-01-2017, 07:55 AM Go to last post
  49. question !!

    I am helping my niece in explaining regression analysis by studying by myself and finding problems and trying to solve those. one of the problem has...

    Started by rka_stat‎, 04-29-2017 06:33 AM
    • Replies: 4
    • Views: 435
    04-30-2017, 07:58 AM Go to last post
  50. Linear Regression: Significance levels/Finding equation of fitted regression lines

    I did an exam recently and I am looking for a solution to a question which no matter where I look, I can't find out how to do it. It doesn't help I'm...

    Started by prephil‎, 04-29-2017 05:04 PM
    • Replies: 0
    • Views: 192
    04-29-2017, 05:04 PM Go to last post
  51. Correlating two pitch contour models

    I am determining tonal ability (the ability to express tones in a tone language, a language which requires a change in pitch to differentiate meaning...

    Started by jkao1‎, 04-28-2017 03:21 PM
    • Replies: 0
    • Views: 317
    04-28-2017, 03:21 PM Go to last post
  52. Exclamation Polynomial regression interpretation

    I am running a logistic regression to find how font manipulation (x1) and people perceptions over how easy it is to process the information (x2)...

    Started by maria15‎, 04-27-2017 06:42 AM
    interpretation, moderator, polynomial regression
    • Replies: 0
    • Views: 221
    04-27-2017, 06:42 AM Go to last post
  53. Nested logit?

    I am researching about different modes of transportation and i need to get the utility function of each mode. My dependent variable is the modes of...

    Started by Paul_research‎, 04-26-2017 11:04 PM
    • Replies: 0
    • Views: 330
    04-26-2017, 11:04 PM Go to last post
  54. AIC computation

    (1) Compute the Akaike Information Criterion (AIC) value for the linear regression model Y = b0 + b1*X1 + b2*X2 + b3*X3. The regression model was...

    Started by shane414‎, 04-26-2017 06:25 AM
    regresiion, regression analysis
    • Replies: 0
    • Views: 350
    04-26-2017, 06:25 AM Go to last post
  55. How to do a linear multiple regression with multiple correlating independent vars?

    Right I am a total newb at stats but I'll try an explain what I'm trying to do. Im trying to find whether China's Foreign Direct Investment...

    Started by zakqux93‎, 04-26-2017 06:10 AM
    • Replies: 0
    • Views: 242
    04-26-2017, 06:10 AM Go to last post
  56. Normality

    I did a test of normality in STATA on my dependent variable. The rest was significant thus violations of normality. After taking the log, there is...

    Started by Jazz3‎, 04-21-2017 11:37 AM
    2 Pages
    1 2
    • Replies: 18
    • Views: 787
    04-26-2017, 05:39 AM Go to last post
  57. Understanding Mixed Effects Regression Models

    Can anyone explain to me the difference between mean effect and change when using a mixed effects regression model? I understand mean effect to be...

    Started by Brook99‎, 04-26-2017 03:34 AM
    • Replies: 0
    • Views: 240
    04-26-2017, 03:34 AM Go to last post
  58. Data scattered around y=x

    Hello everyone, I am a researcher in engineering. I do have some background on statistics and mathematics in general, but I am not a professional...

    Started by math4engz‎, 04-23-2017 08:28 AM
    r squared, regression, statistics
    • Replies: 14
    • Views: 751
    04-25-2017, 08:15 PM Go to last post
  59. Exclamation Research Proposal - Statistical Analysis?

    I am submitting a research proposal, "Does the relationship of exercise and quality of sleep differ with age?" where age is the moderator. It has...

    Started by mackk2‎, 04-25-2017 08:00 AM
    • Replies: 6
    • Views: 383
    04-25-2017, 11:41 AM Go to last post
  60. Regression MC

    Can someone confirm the answers to the below? And advise which ones are incorrect. Thanks! 1) True/False: Models selected by automated variable...

    Started by shane414‎, 04-23-2017 08:18 PM
    • Replies: 7
    • Views: 559
    04-25-2017, 09:27 AM Go to last post

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