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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. 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: 2,555
    05-13-2017, 01:03 PM Go to last post
  2. 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: 1,147
    05-12-2017, 07:11 PM Go to last post
  3. 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: 1,803
    05-10-2017, 12:00 PM Go to last post
  4. 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: 629
    05-10-2017, 06:12 AM Go to last post
  5. 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: 714
    05-08-2017, 06:37 AM Go to last post
  6. 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: 952
    05-07-2017, 07:31 PM Go to last post
  7. 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: 1,348
    05-03-2017, 02:44 PM Go to last post
  8. 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: 982
    05-03-2017, 11:07 AM Go to last post
  9. 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: 1,379
    05-02-2017, 12:04 PM Go to last post
  10. 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: 1,015
    05-01-2017, 02:37 PM Go to last post
  11. 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: 2,082
    05-01-2017, 07:55 AM Go to last post
  12. 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: 1,236
    04-30-2017, 07:58 AM Go to last post
  13. 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: 660
    04-29-2017, 05:04 PM Go to last post
  14. 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: 878
    04-28-2017, 03:21 PM Go to last post
  15. 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: 787
    04-27-2017, 06:42 AM Go to last post
  16. 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: 1,136
    04-26-2017, 11:04 PM Go to last post
  17. 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: 1,027
    04-26-2017, 06:25 AM Go to last post
  18. 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: 539
    04-26-2017, 06:10 AM Go to last post
  19. 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: 1,866
    04-26-2017, 05:39 AM Go to last post
  20. 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: 666
    04-26-2017, 03:34 AM Go to last post
  21. 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: 1,606
    04-25-2017, 08:15 PM Go to last post
  22. 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: 1,301
    04-25-2017, 11:41 AM Go to last post
  23. 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: 1,616
    04-25-2017, 09:27 AM Go to last post
  24. Geographically Weighted Ordinal Logistik Regression

    Hello, I'm studying about Geographically Weighted Ordinal Logistik Regression. but I have trouble getting a book or reference that is related to it....

    Started by Pamona D‎, 04-24-2017 09:12 PM
    ordinal logistic reg, regression analysis
    • Replies: 0
    • Views: 746
    04-24-2017, 09:12 PM Go to last post
  25. Question Independence of cases (observations)

    Dear all, I am currently analyzing the effects several independent variables have on dependant variable (political party's position on...

    Started by tomas.bek‎, 04-24-2017 12:36 PM
    durbin watson, independence, observations, ols, regression
    • Replies: 0
    • Views: 908
    04-24-2017, 12:36 PM Go to last post
  26. how to interpret regressions with spatial autocorrelation?

    Hi guys, I am currently doing a GIS and statistical project on whether there is an association between access to green space and deprivation at...

    Started by mariabenedict97‎, 04-23-2017 08:11 AM
    • Replies: 1
    • Views: 943
    04-23-2017, 10:16 AM Go to last post
  27. Regression Analysis Practice

    I'm trying to solve these questions from a self-study for actuarial sci. I would appreciate if someone can verify and help explain the following. I...

    Started by shane414‎, 04-23-2017 03:22 AM
    • Replies: 2
    • Views: 1,336
    04-23-2017, 09:15 AM Go to last post
  28. Test for multivariate analysis using multiple types of independent variables?

    Hey all, I'm new to the forum and relatively new to statistics (I took an intro biostats class, that's it). I'm working on my first "real world"...

    Started by immaxf‎, 04-22-2017 06:21 PM
    • Replies: 1
    • Views: 745
    04-22-2017, 08:44 PM Go to last post
  29. Logistic regression : negative coefficients, categorical variables

    Hi I am trying to build attrition model and have these variables :- 10 categorical variables with sub levels which created into dummy variables and...

    Started by Boo‎, 04-22-2017 06:05 AM
    coefficient, logistic regression
    • Replies: 3
    • Views: 929
    04-22-2017, 09:55 AM Go to last post
  30. Zero inflated negative binomial regression interpreting main and interaction effects

    I am running a zero inflated negative binomial model (zinb) and want to interpret the main and interaction effects. I have the following: ...

    Started by random_android‎, 04-21-2017 03:51 PM
    interaction effects, main effect, negative binomial model, stata 14, zero inflated
    • Replies: 4
    • Views: 1,217
    04-22-2017, 02:43 AM Go to last post
  31. confidence interval

    how do you find confidence interval ?

    Started by rka_stat‎, 04-19-2017 03:55 PM
    • Replies: 3
    • Views: 879
    04-20-2017, 07:49 PM Go to last post
  32. How to report and interpret non significant single regression? Its urgent plz help

    HI, can anyone please help me interpret this picture? we have not learnt this yet. will be grateful! ...

    Started by Amna_22‎, 04-20-2017 08:35 AM
    • Replies: 1
    • Views: 772
    04-20-2017, 10:10 AM Go to last post
  33. margin of error

    how do you find 95% margin of error ?

    Started by rka_stat‎, 04-19-2017 03:56 PM
    • Replies: 1
    • Views: 727
    04-20-2017, 08:20 AM Go to last post
  34. best point estimate and approximate interval estimate

    First Question: I need to calculate best point estimate for population of 4500. My understanding is it is (intercept + (variable*4500). Is that...

    Started by rka_stat‎, 04-19-2017 03:19 PM
    • Replies: 0
    • Views: 634
    04-19-2017, 03:19 PM Go to last post
  35. Question Analysis of multiple dependent variables of different sample sizes

    Thanks in advance for your help, I'm not a statistician, so I'm struggling to understand the best way to analyse some biological data, and I...

    Started by StatLess‎, 04-19-2017 09:32 AM
    • Replies: 0
    • Views: 501
    04-19-2017, 09:32 AM Go to last post
  36. Binary LR-Forward Stepwise: Should I report the each step entered in the result?

    Dear all, I used binary logistic regression in a forward stepwise method to classify my two groups of participants (depressed vs. healthy) using...

    Started by Ping Koo‎, 04-19-2017 07:51 AM
    • Replies: 0
    • Views: 506
    04-19-2017, 07:51 AM Go to last post
  37. Log regressions

    So between these two log regressions: 1) transform y into log but keep X normal 2) transform both the y and x into log When or what would be a...

    Started by Jazz3‎, 03-31-2017 04:05 AM
    • Replies: 9
    • Views: 1,083
    04-19-2017, 02:15 AM Go to last post
  38. Fixed effects model urgent help

    So I have a dataset which I am trying to use the fixed effects model on. I am confused if I am doing it correctly. I am using panel data to...

    Started by jdev10‎, 04-18-2017 11:02 PM
    • Replies: 0
    • Views: 614
    04-18-2017, 11:02 PM Go to last post
  39. From time 1 to time 2

    Hello, I am having a hard time to understand an issue which has been pointed out to me, though with limited further explanation. I am testing an...

    Started by Ted Brasil‎, 04-18-2017 04:35 PM
    • Replies: 0
    • Views: 745
    04-18-2017, 04:35 PM Go to last post
  40. High concentration at one level of multiple regression

    I am running a regression where the dependent variable is income gain. In about sixty percent of the cases the intervention fails and there is no...

    Started by noetsi‎, 04-18-2017 09:53 AM
    • Replies: 0
    • Views: 664
    04-18-2017, 09:53 AM Go to last post
  41. Derivation of an equation of Influential Analysis in OLS

    Hi to everyone, I'm new to this forum and I'm very pleased for the existence of this forum, since the fact that forums in these times are in decay....

    Started by alexjmackh_94‎, 04-16-2017 07:05 PM
    econometrics, influential outliers, ols
    • Replies: 2
    • Views: 631
    04-17-2017, 10:32 PM Go to last post
  42. Newbie Question

    Hello, Just wondering if someone could help me. I have a degree in Maths and have done second year Uni Maths stats (but quite a while ago) so...

    Started by PinkyP2‎, 04-13-2017 11:44 PM
    • Replies: 4
    • Views: 899
    04-16-2017, 11:31 PM Go to last post
  43. interpreting p-value in a table

    Hello. I am reading an article of how herbal tea affects INR values (the hypthesis is - that those who drink herbal tea have INR values outside the...

    Started by laradf‎, 04-15-2017 04:56 PM
    • Replies: 1
    • Views: 854
    04-15-2017, 10:27 PM Go to last post
  44. A question regarding simultaneous relationship and its implications on predictions

    Hey guys, I have a question regarding The simultaneous relationships and the Implications it has on regarding whether the said variable will be...

    Started by orenz10‎, 04-14-2017 08:22 AM
    • Replies: 0
    • Views: 582
    04-14-2017, 08:22 AM Go to last post
  45. Question Mediated regression (parallel): Opposing effects → how to interpret total effect?

    Hi everyone! In my student assistant job I had to to test a model of mediated regression, with various variables mediating the effect of A on B....

    Started by Jona‎, 04-13-2017 07:46 AM
    mediated regression, mediation, process tool, spss
    • Replies: 0
    • Views: 1,372
    04-13-2017, 07:46 AM Go to last post
  46. Can you include X1/X2 in a model when you've already included X1 and X2?

    Can you include X1/X2 in a model when you've already included X1 and X2? For example, I am trying to predict housing prices. X1=square feet and...

    Started by smw10c‎, 04-08-2017 12:40 PM
    • Replies: 4
    • Views: 778
    04-11-2017, 02:59 PM Go to last post
  47. Is it best to match data units to get a logical regressional relationship?

    Hi, I'm trying to find an economic relationship between inflation(CPI) and leakages to the economy like Taxes, Savings, and Imports. Well, it...

    Started by Zenny‎, 04-10-2017 09:22 PM
    inflation
    • Replies: 6
    • Views: 761
    04-11-2017, 02:20 PM Go to last post
  48. Interpret regression dummies

    Hi there :yup: So I am having troubles understanding something. I had to run a regression, taking category A as base (highest share) The...

    Started by Jazz3‎, 04-09-2017 08:49 AM
    • Replies: 3
    • Views: 724
    04-10-2017, 10:00 AM Go to last post
  49. Regression Analysis

    I was working through the following set and needed some clarity on them. I attempted these questions (with my answers below) but need help to see...

    Started by msoe414‎, 04-08-2017 03:22 AM
    regression analysis, statistics
    • Replies: 1
    • Views: 1,439
    04-10-2017, 09:58 AM Go to last post
  50. Quadratic formula doesn't add up (SPSS)

    Hello, SPSS will draw a quadratic fit line on a scatterplot if requested and provide the formula (see attached). I have typed out the quadratic...

    Started by HanEyeAm‎, 04-07-2017 09:28 PM
    • Replies: 9
    • Views: 1,321
    04-09-2017, 07:46 PM Go to last post
  51. Panel data regression estimatetion method

    Hi, I am facing some problems with a panel dataset, and I hope somebody could help me. I have a pretty large data set (approx. 5000 firms, 15...

    Started by RickL‎, 04-09-2017 05:53 AM
    fixed effects, panel data, panel regression, pooled ols, random effets
    • Replies: 0
    • Views: 583
    04-09-2017, 05:53 AM Go to last post
  52. Model validation in regression

    I was wondering, for this question and why. I think its in-sample but curious why. 1) Models need to be validated: a. In-sample b....

    Started by msoe414‎, 04-07-2017 03:49 PM
    • Replies: 4
    • Views: 1,148
    04-08-2017, 06:58 PM Go to last post
  53. backtranformation of log transformed data

    Hi forum, I've a simple question that has probably a difficult answer. In a lineair regression of the form: log(y) ~ x resulting in an...

    Started by koen‎, 07-25-2006 09:39 AM
    • Replies: 2
    • Views: 4,941
    04-08-2017, 02:58 PM Go to last post
  54. Regression with Continuous and Dummy Independent Variables

    Dear Colleagues, I am running a multivariate linear regression analysis but got stuck with this situation. I have one dependent variable (which...

    Started by tomas.bek‎, 04-03-2017 08:56 AM
    continuous variables, dummy variables, multivariate regression, ols, regression
    • Replies: 13
    • Views: 1,771
    04-05-2017, 04:07 PM Go to last post
  55. Variance of a sum of predictions

    Hi, I predict the spatial distribution of a species on a regular grid using a regression model. Species numbers vary with environmental...

    Started by mmercker‎, 03-31-2017 08:03 AM
    population size, prediction interval, spatial analysis
    • Replies: 8
    • Views: 1,773
    04-03-2017, 01:44 AM Go to last post
  56. Hypothesis interpretation

    Dear I'm wondering how I should interpret my hypotheses. The first one is "the relationship between X1 and Y increases as X3 increases" and the...

    Started by Hypnoz‎, 03-31-2017 02:03 PM
    • Replies: 4
    • Views: 1,099
    04-01-2017, 03:09 AM Go to last post
  57. Elasticity from linear and log-log regression model

    I am having problem understanding the calculation of elasticity. if I am using the log-log model eg: log(Y)=constant+β1 log(X1)+β2 log(X2) . So i...

    Started by korzuen‎, 03-31-2017 01:11 PM
    elasticity, log, regression
    • Replies: 3
    • Views: 1,759
    04-01-2017, 01:22 AM Go to last post
  58. Unique vs. Shared Variance Multiple Regression

    Hi all, I am having trouble with interpreting the explained variance of my multiple regression model. I ran a hierarchical model with nine...

    Started by Aegislash‎, 03-31-2017 04:43 AM
    • Replies: 1
    • Views: 1,678
    03-31-2017, 06:41 PM Go to last post
  59. How to handle a skewed dependent variable?

    Hello, i had another thread, where the scatterplot of the dependent variable and independent variable looked like the pic ('scatterplot2'). Now...

    Started by Franziska13‎, 03-30-2017 06:13 AM
    • Replies: 3
    • Views: 1,209
    03-31-2017, 07:42 AM Go to last post
  60. different linear regression formulas from same population

    hello to all, my question needs some explanation first; i want to test the efficiency of formulas for weight prediction but since medical...

    Started by srht ky‎, 03-29-2017 06:32 AM
    • Replies: 2
    • Views: 734
    03-30-2017, 01:46 PM Go to last post

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