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# Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. ### 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...

• Replies: 0
• Views: 333
06-09-2017, 03:32 AM
2. ### 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...

• Replies: 2
• Views: 380
06-08-2017, 10:16 PM
3. ### 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?

• Replies: 4
• Views: 603
06-08-2017, 06:19 PM
4. ### 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...

• Replies: 1
• Views: 723
06-07-2017, 02:33 PM
5. ### 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...

• Replies: 2
• Views: 770
06-05-2017, 09:44 PM
6. ### 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...

• Replies: 2
• Views: 651
06-05-2017, 03:35 PM
7. ### 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...

• Replies: 3
• Views: 859
06-05-2017, 08:32 AM
8. ### Master thesis, statistics check!

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

• Replies: 12
• Views: 2,758
06-02-2017, 03:24 AM
9. ### 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”...

• Replies: 1
• Views: 607
06-02-2017, 12:10 AM
10. ### 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...

• Replies: 6
• Views: 3,242
05-31-2017, 04:14 AM
11. ### 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...

• Replies: 1
• Views: 1,207
05-30-2017, 11:55 AM
12. ### 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...

• Replies: 1
• Views: 694
05-30-2017, 09:00 AM
13. ### Regression

Hi How I can use regression analysis?

• Replies: 2
• Views: 644
05-28-2017, 09:41 PM
14. ### 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...

• Replies: 2
• Views: 862
05-28-2017, 06:38 AM
15. ### 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...

• Replies: 2
• Views: 942
05-27-2017, 01:12 PM
16. ### 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...

• Replies: 0
• Views: 717
05-26-2017, 09:39 PM
17. ### 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) ...

• Replies: 2
• Views: 1,469
05-26-2017, 01:20 AM
18. ### 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...

• Replies: 8
• Views: 1,348
05-24-2017, 03:30 PM
19. ### 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...

• Replies: 1
• Views: 1,112
05-24-2017, 11:01 AM
20. ### 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...

• Replies: 0
• Views: 867
05-24-2017, 03:25 AM
21. ### 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...

• Replies: 0
• Views: 700
05-24-2017, 03:20 AM
22. ### 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...

• Replies: 0
• Views: 609
05-23-2017, 04:01 PM
23. ### 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...

• Replies: 3
• Views: 1,096
05-22-2017, 08:44 PM
24. ### 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:...

• Replies: 6
• Views: 1,044
05-19-2017, 09:07 AM
25. ### 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)...

• Replies: 3
• Views: 846
05-19-2017, 08:25 AM
26. ### 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...

• Replies: 0
• Views: 634
05-17-2017, 05:07 PM
27. ### 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...

• Replies: 4
• Views: 796
05-16-2017, 11:03 AM
28. ### 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...

• Replies: 1
• Views: 1,837
05-15-2017, 03:47 PM
29. ### Condition to put regression analysis zero?

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

• Replies: 11
• Views: 1,520
05-14-2017, 10:36 PM
30. ### 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...

• Replies: 8
• Views: 2,104
05-13-2017, 01:03 PM
31. ### 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,...

• Replies: 7
• Views: 978
05-12-2017, 07:11 PM
32. ### 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...

• Replies: 3
• Views: 1,400
05-10-2017, 12:00 PM
33. ### 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)....

• Replies: 0
• Views: 552
05-10-2017, 06:12 AM
34. ### 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...

• Replies: 1
• Views: 798
05-07-2017, 07:31 PM
35. ### 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...

• Replies: 6
• Views: 1,211
05-03-2017, 02:44 PM
36. ### 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...

• Replies: 1
• Views: 855
05-03-2017, 11:07 AM
37. ### 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...

• Replies: 8
• Views: 1,272
05-02-2017, 12:04 PM
38. ### Multiple Regression Help !!

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

• Replies: 2
• Views: 937
05-01-2017, 02:37 PM
39. ### 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...

• Replies: 8
• Views: 1,820
05-01-2017, 07:55 AM
40. ### 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...

• Replies: 4
• Views: 1,087
04-30-2017, 07:58 AM
41. ### 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)...

• Replies: 0
• Views: 694
04-27-2017, 06:42 AM
42. ### 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...

• Replies: 0
• Views: 999
04-26-2017, 11:04 PM
43. ### 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...

• Replies: 0
• Views: 877
04-26-2017, 06:25 AM
44. ### 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...

• Replies: 0
• Views: 497
04-26-2017, 06:10 AM
45. ### 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...

• Replies: 0
• Views: 597
04-26-2017, 03:34 AM
46. ### 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...

• Replies: 14
• Views: 1,494
04-25-2017, 08:15 PM
47. ### 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...

• Replies: 6
• Views: 1,047
04-25-2017, 11:41 AM
48. ### 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...

• Replies: 7
• Views: 1,355
04-25-2017, 09:27 AM
49. ### 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....

• Replies: 0
• Views: 667
04-24-2017, 09:12 PM
50. ### Independence of cases (observations)

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

• Replies: 0
• Views: 758
04-24-2017, 12:36 PM
51. ### 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...

• Replies: 1
• Views: 781
04-23-2017, 10:16 AM
52. ### 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...

• Replies: 2
• Views: 1,044
04-23-2017, 09:15 AM
53. ### 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"...

• Replies: 1
• Views: 667
04-22-2017, 08:44 PM
54. ### 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...

• Replies: 3
• Views: 767
04-22-2017, 09:55 AM

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