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# Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. ### Variance inflation and interactions between variables?

Hello everyone I am having trouble interpreting some of my results. I am using logistic regression to infer a model based on measured data....

• Replies: 8
• Views: 13,692
01-05-2015, 01:34 PM
2. ### Multiple Regression analysis

Hello Everyone, Can anyone please tell me, how one can compute the total score of dependent variables in order to do regression analysis?? ...

• Replies: 8
• Views: 1,899
05-16-2013, 02:31 AM
3. ### Pros & Cons of a pooled model versus a non pooled one

Dear All, so this is what I mean, so I am looking at determinants of learning achievements of children. Cool. So now I would like to understand...

• Replies: 8
• Views: 3,142
04-16-2013, 11:45 AM
4. ### binary independent and binary dependent variables

Hi all, Is it possible to run a regression with binary independent variables and binary dependent variables. i.e 0 & 1 value ind variables and 0...

• Replies: 8
• Views: 3,538
02-21-2013, 12:44 AM
5. ### Interpetation of Ordinal Logistic regression parameter

I am using effect coding and have a question on the interpetation of a p value for individual parameters of a categorical predictor (which SAS breaks...

• Replies: 8
• Views: 2,461
02-12-2013, 05:07 PM
6. ### Help understanding Microsoft Excel ANOVA output (Significance F ?)

Hi, So I created my own very simple excel table, with a set of X and Y values, and then I told Excel to run a regression analysis. ...

• Replies: 8
• Views: 19,347
05-23-2013, 12:43 PM
7. ### Polynomial regression question

Say you have a linear and quadratic term. Is it possible for the linear term to be not signficant, and the quadratic term be signficant? If so, what...

• Replies: 8
• Views: 2,981
06-11-2013, 11:17 AM
8. ### Doing a stepwise mutiple regression

Hi everyone, I've got two continuous DVs (N = 48, so not a huge sample) and three inter-correlated, continuous IVs. I'm interested in finding out...

• Replies: 8
• Views: 2,287
08-13-2013, 11:05 AM
9. ### comparing regression coefficients between different models to see if they are similar

Hi all; This is a very elementary problem; but unfortunately, my strengths do not like in statistics: I am trying to describe plant growth over...

• Replies: 8
• Views: 1,435
08-23-2013, 09:23 AM
10. ### Regression involving likert scale response

Hi, I am trying to carry out regression analysis. I would like my dependent variable to be a Yes/No type, and my independent variables to be...

• Replies: 8
• Views: 2,924
10-09-2013, 08:57 PM

hello, I have started my first journey to logistic regression, and i have already got my first problem. so, my SPSS merged file contains: -...

• Replies: 8
• Views: 1,357
10-11-2013, 04:51 PM
12. ### Logistic regression: how to get ORs and CIs for non-included variables

I'm working on a modeling project using logistic regression with forward selection. I would like to be able to determine the odds ratios and...

• Replies: 8
• Views: 3,276
12-01-2013, 09:18 PM
13. ### Call Center Prediction Model

I have an interesting task to determine the best model for forecasting the number of calls coming into our call center each hour of the day. One...

• Replies: 8
• Views: 2,605
12-13-2013, 10:02 AM
14. ### what shall I do if I find too many significant interaction terms?

I am estimating a logistic regression model and have developed main effects model. I have found that the interaction of a categorical independent...

• Replies: 8
• Views: 2,733
02-07-2014, 10:06 PM
15. ### number of variables for a model

I am now trying to build a cox model: h(t, beta) = h0(t)exp(X*beta) I have selected some variables from the data, and for a category variable, if...

• Replies: 8
• Views: 3,041
03-25-2014, 06:05 PM
16. ### [SOLVED] Describe curve of growth model

I'm reading a paper now and want to describe the curves as seen here: Are the bottom 2 lines considered exponential decay. What would the...

• Replies: 8
• Views: 1,904
03-18-2014, 08:05 PM
17. ### Interpreting the regression RMSE when responses are measurements with known SD

Hi all, I'm fitting a simple regression model (Y = a + bX) where my responses are measurements whose standard deviations, SD, are available....

• Replies: 8
• Views: 4,258
07-29-2014, 07:11 PM
18. ### Non-parametric regression

I am relatively new to this so excuse my ignorance. As best I can tell non-parametric regression has no coefficients (no slopes). It does have...

• Replies: 8
• Views: 1,772
08-26-2014, 10:25 AM
19. ### regression or remosre??!!

what are the differences between remorse and regression????????????????????

• Replies: 8
• Views: 3,618
09-13-2014, 05:19 AM
20. ### Help to prove the relationship of regression coefficients of total data and sub-data

Hello, The regression of total data set is:Y=aX+b0 The total data set is divided to two data sets. The regressions of the two sub data sets are:...

• Replies: 8
• Views: 2,311
09-16-2014, 11:44 PM
21. ### Overdispersions and logistic regression

Note the following comment on this: I have never been clear what the difference between grouped and ungrouped data is. My elements, notably...

• Replies: 8
• Views: 4,150
09-20-2014, 08:04 AM
22. ### Writing R^2 strictly in terms of simple correlations among variables

Say we have the following regression Y_i=\beta_0+\beta_1X_{1i}+\beta_2X_{2i}+\epsilon_i I want to write the multiple R^2 for this regression...

• Replies: 8
• Views: 3,158
02-07-2015, 07:06 PM
23. ### Ambulance utilisation: help choosing a method

Hi, I need some advice in selecting a statistical test please. I am researching ambulance utilisation rates at a population level (defined by a...

• Replies: 8
• Views: 1,928
02-06-2015, 04:57 AM
24. ### Comparing Models

Today I was going to attempt to figure out and write some SAS code to compare nested linear models (variance explained). But I need some basics...

• Replies: 8
• Views: 2,129
04-28-2015, 01:31 PM
25. ### Hell Please. Linear Regression Model

Which of the following is NOT assumed to contribute to uncertainty in predicting y from x in a standard Model I linear regression. a. Uncertainty...

• Replies: 8
• Views: 1,612
05-19-2015, 09:42 AM
26. ### Do I need to refer goodness of fit indices when I am only interested in estimates?

Hello all, I am intersted in the relationship b/w 3 variables (A,B, and C). Then I constructed a path model as A->B->C. My only interest is how big...

• Replies: 8
• Views: 2,072
06-09-2015, 11:38 AM
27. ### Help creating my first logistic Regression model

Hi everyone, Im new here, and new in the stats world, and i have several questions and need for help on how to proceed. First, what im doing...

• Replies: 8
• Views: 3,230
07-06-2015, 03:21 PM
28. ### 1)Test multicollinearity b4/after Stepwise Log Regress? 2)Final Equatn 3)Model Select

Hi all, I need to perform logistic regression for my study. Pretty new to it but have read up on it and have tried it on SPSS. I would like to...

• Replies: 8
• Views: 2,226
07-25-2015, 06:13 AM
29. ### Least Squares

• Replies: 8
• Views: 3,248
09-09-2015, 06:21 PM
30. ### How to deal with repeated measures data in multiple linear regression?

Hello, I am a novice in the area of regression analyses, and was hoping someone could shed some light on my situation. I will be conducting a...

• Replies: 8
• Views: 1,853
09-22-2015, 03:51 PM
31. ### Logistic Regression of NFL Data

Week 5 picks from a logistic regression model for the NFL: http://trevorbischoff.com/nfl-2015-week-5-predictions/

• Replies: 8
• Views: 5,151
12-30-2015, 01:19 PM
32. ### Trend analysis / regression model with missing data

Hi, I want to apply a Poisson GLM to count data, analyzing trends. However, there are missing counts (i.e. missing values in the outcome variable)...

• Replies: 8
• Views: 2,025
01-28-2016, 09:19 AM
33. ### Ordinal predictors

I know there was a thread on this. I could not find it. This is the type of issue that concerns me. These authors had an ordinal predictor that...

• Replies: 8
• Views: 1,201
02-22-2016, 05:10 PM
34. ### Regression: DV is Revenue and IDV is cost. (Very High MAPE)

Need help on one of the modelling assignment. My dependent variable is Revenue and the independent variable is Cost beside some other variables...

• Replies: 8
• Views: 1,770
03-11-2016, 09:24 AM
35. ### Relative impact of predictors in linear regression

I want to rank variables from most to least important, in terms of impact on the DV. My predictors are either interval or dummy. My DV is interval. I...

• Replies: 8
• Views: 2,475
04-14-2016, 09:02 AM
36. ### Is this Multicollinearity?

Hi guys, im relatively new in this forum. I have a question, i am using multiple regression analysis for my thesis. The result shows the P-value is...

• Replies: 8
• Views: 1,218
06-01-2016, 07:44 AM
37. ### 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...

• Replies: 8
• Views: 1,946
08-29-2016, 06:28 AM
38. ### Multinomial logistic regression - testing assumptions

Hello everyone, I'm trying to perform an MLR with 4 continuous predictors for one ordinal dependent. I've tested my assumptions for the MLR except...

• Replies: 8
• Views: 2,006
07-07-2016, 09:02 AM
39. ### Normality / QQ-Plot in Generalized Linear Models (GLM)

Hi, sorry if this is a frequent question, but I did not find an appropriate answer: If I have a GLM with a non-normal distributed outcome...

• Replies: 8
• Views: 3,405
07-06-2016, 07:59 PM
40. ### Dis./Avantadges of estimating of binary response model with OLS

In the Maximum Likelihood Estimator context, I can't find answers for those two questions: - What are the advantages and disadvantages of...

• Replies: 8
• Views: 2,016
07-02-2016, 12:47 PM
41. ### Beta Regression Resources?

Does anyone have some good resources for Beta Regression related to all of its parts: -assumptions -diagnostic (residuals) ...

• Replies: 8
• Views: 2,528
08-13-2016, 01:41 PM
42. ### Regression with additive and multiplicative predictors

Hi, we are analyzing pollutants in mussels with regression models. Let's say we have only the two predictors (1) "year" and (2) "month". However,...

• Replies: 8
• Views: 2,009
10-10-2016, 07:50 AM
43. ### Is univariate analysis a must before binary logistic regression

Could I enter all my independent variables directly for a binary logistic regression OR is it necessary that I should run a one way anova for...

• Replies: 8
• Views: 1,748
10-22-2016, 09:27 AM
44. ### 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: 1,270
05-02-2017, 12:04 PM
45. ### 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...

• Replies: 8
• Views: 3,557
12-30-2016, 12:33 PM
46. ### 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: 1,803
05-01-2017, 07:55 AM
47. ### 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...

• Replies: 8
• Views: 1,404
04-03-2017, 01:44 AM
48. ### SPSS is kicking out my variables [regression]

So I am doing a multiple regression, with some independent variables. For control variables, I created dummies for the years. I have five years...

• Replies: 8
• Views: 1,044
03-24-2017, 10:59 AM
49. ### 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...

• Replies: 8
• Views: 3,148
01-07-2017, 12:43 PM
50. ### 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: 2,083
05-13-2017, 01:03 PM
51. ### 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: 1,328
05-24-2017, 03:30 PM
52. ### Log-transforming Only the Dependent Variable

For the regression: ln(gestation) = 5.28 + 0.0104×Birthweight For the birthweight and gestation data, Minitab tells us that coefficient of...

• Replies: 8
• Views: 603
07-06-2017, 03:25 AM
53. ### Help with analysis. PLEASE.

Hi all:wave: , please can any one give an indication of which stats test to use. So far I've looked at doing a bivariate and found significant data,...

• Replies: 7
• Views: 2,662
03-30-2008, 03:28 PM
54. ### statistics problem

I am stumped on how to go about making the test statistic for this problem. Any help would be appreciated. Thank you. Suppose that you would like...

• Replies: 7
• Views: 4,279
06-12-2008, 05:56 PM

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