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# Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. ### Binomial regression with x as the dependent variable and n as an independent variable

Hi all I have a sample size of 100. Out of 100 a certain number are successful at stage one. Of those successful at stage one some are successful...

• Replies: 15
• Views: 4,360
03-08-2012, 05:59 PM
2. ### bivariate analysis versus univariate logistic regresssion analysis

Hello, I have done a bivariate analysis and univariate logistic regresion analysis on the same data. Now both gave the same results (OR, 95%CI),...

• Replies: 0
• Views: 2,938
03-09-2013, 03:18 PM
3. ### bivariate regression question

Hi everyone: I am have conducted bivariate regression analysis to examine the effect of: an (x) independent variable, age (nominal) on a (y)...

• Replies: 5
• Views: 2,691
03-15-2013, 02:52 PM
4. ### Bivariate with Normal Probability plots.

This is more of a conceptual question for a problem that I'm working on. My professor is asking questions about normal probability plots and I can't...

• Replies: 0
• Views: 1,191
09-22-2014, 04:20 PM
5. ### Bizarre multicollinearity (inferred from VIF) in regression

I'm really confused about why I have such high VIFs in a multiple regression I've run. My predictors are country (2 different countries, so -1 and...

• Replies: 2
• Views: 1,192
07-30-2014, 04:00 PM
6. ### Blinder-Oaxaca Decomposition for a Multivariate Linear Regression

Hello Everyone, I am working on a thesis that uses a multivariate linear regression to evaluate the racial wealth gap between four groups: whites,...

• Replies: 1
• Views: 5,332
04-28-2012, 11:36 AM
7. ### Blinder-Oaxaca decomposition- T-stats and Group Indicator Variable

Hi everyone, I'm currently doing some pooled blinder oaxaca decompositions on ethnic discrimination using the UK LFS data and have two questions....

• Replies: 0
• Views: 1,143
01-07-2014, 08:54 AM
8. ### bonferroni correction in multivariate regression

• Replies: 27
• Views: 6,432
12-01-2014, 06:34 PM
9. ### Boosted regression versus OLS regression

Dear all I am working on estimating a linear model using boosting regression technique to estimate the parameters. This is a slightly different...

• Replies: 0
• Views: 2,464
04-01-2014, 03:32 AM
10. ### Bootstrap

Hey, I am new to this forum and I have a question about Bootstrapping. I want to calculate some critical values. The data generating process is...

• Replies: 2
• Views: 2,038
11-30-2014, 05:45 AM
11. ### bootstrap correlation

Hi, I am wondering if is it correct to use bootstrap methods to get an estimate of correlation coefficient (Pearson) when data violate some of the...

• Replies: 2
• Views: 5,666
10-08-2010, 02:09 AM
12. ### bootstrap regression question

I have a slightly different twist on the normal application of bootstrapping and regression. Here’s the problem… I have a population of people...

• Replies: 1
• Views: 2,195
10-28-2016, 08:09 AM
13. ### bootstrap validation

how can we do bootstrap validation in sas?

• Replies: 0
• Views: 979
07-31-2014, 08:14 AM
14. ### Bootstrapping confidence intervals for prediction based on SE of the coefficients?

Is it remotely legitimate to use the standard errors of the coefficients from linear regression in a Monte Carlo simulation to bootstrap 2.5%/97.5%...

• Replies: 0
• Views: 1,570
10-15-2011, 08:35 PM
15. ### 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: 1,151
05-24-2017, 11:01 AM
16. ### Bootstrapping regression coefficients - count DV

Hi folks, I'm trying to plan some analyses for a project assessing how well some subscales measuring various facets of self-control (arguably...

• Replies: 0
• Views: 3,083
05-16-2011, 10:06 PM
17. ### Both categorical and continuous predictors?

I'm sure this is very simple but I just want to be sure. I have actually been searching the web for a while now and can't seem to find a clear...

• Replies: 5
• Views: 1,908
03-21-2016, 04:35 PM
18. ### Bounded or unbounded? Which regression?

Hi, I have to do a regression analysis with a dependent variable which ranges from -5 to 12. Its distribution is given below. Can anybody suggests...

• Replies: 1
• Views: 3,677
12-18-2014, 10:19 AM
19. ### Bounds for R2 in OLS regression?

Context: From the big dataset I’m working with, my boss is somewhat curious (read skeptic) as for why fitting a multiple linear regression with...

• Replies: 1
• Views: 1,120
01-21-2016, 09:27 PM
20. ### BOX-COX transformation - Correct method

Dear All, I fitted a quadratic model to a set of data. I am trying to apply the box-cox transformation to check if my data should be transformed....

• Replies: 2
• Views: 10,387
09-08-2010, 09:44 AM
21. ### Box-Tidwell procedure

Hello everyone, Is there a possibility to perform Box-Tidwell procedure in SPSS, or any other convenient software? Thanks.

• Replies: 0
• Views: 5,605
06-28-2012, 04:38 PM
22. ### brain freeze.....

im having a really stupid moment, but what does it mean when a multiple regression coeffecient is insignificant. say hair colour is found to be...

• Replies: 1
• Views: 2,321
09-22-2008, 09:15 AM
23. ### Breaking up a variable

Hi, I have a question about a regression I am running (actually an event history/survival analysis model, but my question should apply to all types...

• Replies: 0
• Views: 1,283
06-20-2013, 09:46 AM
24. ### Building a Logisics regression model - help

Audited ~50 patients, and collected 10 potential predictors for each (some quantitative, some indicative, all independent). Trying to develop a...

• Replies: 6
• Views: 2,233
02-09-2012, 06:03 PM

Hi there, First of all please excuse my lack of knowledge of the subject I have just started a course in Econometrics and find using the...

• Replies: 3
• Views: 2,671
05-16-2011, 12:07 PM
26. ### Building separate logistic regression models

Hi all, I am building a binary logistic regression model. I am not sure if using the variables as interactions is a better choice than building...

• Replies: 2
• Views: 2,573
02-20-2013, 06:14 PM

Hey everyone, Does anyone know the steps that minitab or any other stats software does to eliminate variables when doing forward selection,...

• Replies: 0
• Views: 3,307
04-01-2011, 05:37 PM
28. ### By which dimension to cluster standard errors in linear regression?

Hello, This is my first post to this forum. All direct help, as well as references to other sources discussing the subject, are greatly...

• Replies: 0
• Views: 2,041
12-13-2012, 07:18 AM
29. ### Bycatch of dolphins data, zero inflated and under-dispersed - what next?

I am investigating the factors that influence the bycatch of dolphins using a poisson GLM. My response variable is bycatch rate per unit effort and...

• Replies: 2
• Views: 1,528
05-22-2014, 09:46 AM
30. ### caculation of Type III ss?

How can I calculate the missing Type III ss for one variable and mean square, If I got the Type I ss and means square for all variables and Type III...

• Replies: 0
• Views: 2,110
08-25-2010, 06:08 PM
31. ### Calculate 95% CI of relative change

Hi, I have a problem related to the calculation of 95% CI of relative change. I ran OLS regression and plan to show the absolute and relative...

• Replies: 0
• Views: 1,330
05-16-2014, 01:18 PM
32. ### Calculate estimated median survival time (by hand)

So I have some SAS code: proc lifereg data=surv_data; model event_time * censor(1) = var1 var2 var3 / distribution=weibull; output...

• Replies: 5
• Views: 2,062
12-11-2015, 01:05 PM
33. ### Calculate Intercept for multiple regression

I have been using a simple Logistic Regression method with Log odds and it works very well for me This is an example X yes no total Prob Odds Log...

• Replies: 0
• Views: 2,533
10-31-2012, 09:21 AM
34. ### Calculate the MSE of s-squared

Consider the multiple regression model y=Xb+u where u~N(0,sigma-squared times identity) where b is a Kx1 vector, X is a non-stochastic full rank...

• Replies: 0
• Views: 3,124
05-01-2011, 06:35 AM
35. ### calculating adjusted rsquared by hand

Hi. I just wanted to make sure I am doing these calculations correctly. I have 8 models, one with no variables. So to get the adjusted rsquared, I...

• Replies: 1
• Views: 8,157
10-30-2013, 11:59 AM
36. ### Calculating adjusted treatment means in regression

Hi, I have two treatment groups, intervention (n=76) and control (n=156). I have a dependent variable, weight, and a couple of baseline variables...

• Replies: 1
• Views: 2,489
02-16-2012, 03:08 PM
37. ### Calculating AUC for just one binary variable legitimate?

Dear members of talkstats, I am a junior Radiology resident in France and I have an urgent question about my study. I am checking the capability...

• Replies: 4
• Views: 1,387
11-08-2014, 08:06 AM
38. ### Calculating confidence bands for nonlinear regression

Hi, I am trying to find a way to calculate the 95% confidence bands for nonlinear regression. I have found the following text on the web, but I do...

• Replies: 0
• Views: 2,812
05-05-2011, 11:53 AM
39. ### Calculating Cook's Critical Value

Hey can someone show me how to get F (4,15) (0.5) = 0.8783.

• Replies: 7
• Views: 5,228
05-12-2012, 01:37 PM
40. ### Calculating Covariance Matrix (Regression Analysis)

Im having difficulty in trying to compute the Covariance Matrix. I think Im missing out an equation to be honest. Here's what I've been given in the...

• Replies: 4
• Views: 6,911
11-28-2011, 04:36 PM
41. ### Calculating deviance residuals and dispersion for a count model

Hello, I’m working with a poisson model to look at relationships between fish and habitat. I have multiple-pass count data (the same pool...

• Replies: 2
• Views: 6,307
10-02-2012, 07:42 PM
42. ### calculating multiple regression by hand

How would you calculate a regression equation such as Y = b1X1 + b2X2 + b3X3 + a by HAND??? I can find in textbooks the way to calculate two...

• Replies: 1
• Views: 23,400
11-11-2008, 12:04 AM
43. ### Calculating Omega Squared

Hi All I have been battling with my stats over the last two months and have managed, by reading books and researching the web, to stumble through...

• Replies: 2
• Views: 26,008
07-28-2009, 10:25 AM
44. ### Calculating predicted probabilities from a logistic regression model SPSS

Hello everyone, I am trying to calculate individual predicted probabilities from a logistic regression model with SPSS (to describe how a individual...

• Replies: 6
• Views: 5,176
11-01-2016, 03:52 PM
45. ### Calculating prediction intervals (error estimates of specific predicted points) in a

Hi all, this is my first post here so please let me know if I need to provide more details. I want to generate a multivariate logistic regression...

• Replies: 6
• Views: 14,007
06-22-2010, 01:01 AM
46. ### 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...

• Replies: 0
• Views: 2,075
12-21-2016, 03:39 AM
47. ### Calculating R^2: to use or not use the least-squares line

Dear Stats Forum, I am a grad student with an introductory stats background. For my research, I'm conducting an experiment to compare two types of...

• Replies: 8
• Views: 1,591
07-21-2012, 05:37 PM
48. ### calculating sample size needed by future studies having got my Logistic Regression

Help anyone? I have downloaded Gpower 3, and seemingly found the option: under test family: z tests statistical test: logistic regression ...

• Replies: 11
• Views: 6,174
07-23-2012, 08:59 AM
49. ### 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...

• Replies: 0
• Views: 2,561
12-29-2016, 02:35 PM
50. ### Calculation of effect size in Hierarchical regression

Hello there, I have conducted a hierarchical regression with two steps. Statistical significance resulted form the first step, as the second...

• Replies: 3
• Views: 4,179
05-29-2013, 11:02 AM
51. ### Calculation of parameter uncertainties when using method of least squares

Hi everyone, I am struggling with a maybe simple problem. I have a set of data points (x,y) for which I would like to derive a fitting function of...

• Replies: 1
• Views: 2,155
11-01-2016, 04:41 AM
52. ### calculation of the average leverage when predictor(s) is categorical

Hello, I was reading different resources about regression diagnostic, in particular for Logistic Regression. As for leverage, the sources suggest...

• Replies: 3
• Views: 1,270
09-30-2016, 02:41 PM
53. ### Calculations for the unstandardized coefficients for a multiple regression analysis

I am looking to write a spreadsheet of the calculations for the unstandardized coefficients for a multiple regression analysis (the B values). ...

• Replies: 3
• Views: 18,963
11-11-2008, 04:53 AM
54. ### Calibration set for PLS regression

Hello everyone, New to this forum and kind of wondering why I hadn't thought to search for one before tonight... I hope a light at the end of the...

• Replies: 0
• Views: 269
07-20-2017, 06:40 AM
55. ### 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: 2,626
12-13-2013, 10:02 AM
56. ### Can "infinite" values be used in regression?

Hello, I am analyzing a series of plots along a recovery gradient, using "time since disturbance" as a continuous variable. I want to see how...

• Replies: 4
• Views: 4,241
04-07-2008, 01:50 PM
57. ### Can AIC values be combined?

Hello! I have hunted far and wide on the net in an attempt to answer this. Essentially, I'm trying to combine two AIC scores from different parts...

• Replies: 1
• Views: 2,158
01-26-2016, 04:10 AM

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