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# Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. ### standardizing residuals

Hi All, I'd like to standardize residuals. Can anybody tell me the formula to standardize to mean 0 and standard deviation 1? I also do not...

• Replies: 3
• Views: 5,595
09-10-2010, 04:35 AM
2. ### Discriminant Analysis Issue

Hello, I'm trying to make sense out of a recent discriminate analysis I ran which confused me. I got really a really low eigenvalue which...

• Replies: 0
• Views: 3,315
02-27-2011, 07:26 PM
3. ### How to handle non normally distributed residuals

Currently we are working with a GEE model, at this point we are having doubts about our residuals which are not normally distributed. Log...

• Replies: 0
• Views: 1,956
10-21-2016, 09:58 AM
4. ### Histogram PDF fitting- Bin Variance Poisson or not

So my basic query is just because you've binned and counted the data into a histogram are the error bars on the bins necessarily the Poisson sqrt(N)?...

• Replies: 0
• Views: 1,335
08-24-2013, 06:41 PM
5. ### Confidence Interval With Regressed Logarithms

I have converted 80 ("Count") pairs of X and Y to L10(X) and L10(Y) and performed a regression analysis. Assuming a valid correlation, I know I can...

• Replies: 0
• Views: 1,170
12-12-2013, 05:27 PM
6. ### Is it linear regression ?

Hello , according to https://en.wikipedia.org/wiki/Polynomial_regression#Definition_and_example the equation is linear regression . I...

• Replies: 2
• Views: 1,696
09-22-2015, 10:54 AM
7. ### Where in the Regression Output tells me which are the strongest predictor variables?

Hi, I'm no statitician (yet), but I'm having a go!! - am looking to design an employee survey and analyse the data in Excel. I have watched many...

• Replies: 4
• Views: 4,416
03-25-2012, 01:03 PM
8. ### SVAR parameter standard errors

Hi everyone, How to calculate the standard errors of SVAR parameters. I know how to estimate it for contemporaneous parameter. I want to know how...

• Replies: 2
• Views: 3,027
11-18-2014, 09:27 AM
9. ### Interpreting PROCESS Output

Hi everyone, Does anyone know of any good resources to help interpret the process macro output, specifically for model 14? I have the book but it...

• Replies: 3
• Views: 3,989
05-06-2015, 10:11 AM
10. ### Converting Group Centroids into Original Measurement Units in DFA

I used SPSS to perform a discriminant function analysis on leg length which I am using to differentiate males and females in my sample. New measures...

• Replies: 2
• Views: 2,075
01-25-2012, 12:54 PM
11. ### How to do residual investigation using Fama-MacBeth regressions?

Hello, everyone!! :) My research is in asset pricing, and I am regressing an independent variable (an anomaly to the CAPM) against a dependent...

• Replies: 0
• Views: 2,511
05-09-2014, 01:40 PM
12. ### proof of E(EMS)=sigma^2

How can I prove expected value of error mean square E(EMS)=\sigma^2. I showed that ESS=S_{YY}-\hat\beta_1^2 S_{XX} Thus E(EMS)= E I am...

• Replies: 2
• Views: 1,767
04-26-2014, 02:16 PM
13. ### Interaction terms in regression-theory

I am learning categorical variables and interaction terms in the regression course and there few things I don't understand. Suppose a salary...

• Replies: 1
• Views: 946
07-02-2014, 01:37 PM
14. ### categorical variables in regression analysis and interaction terms

I am learning multiple regression with categorical variables and in a book I came across this problem. For yield of corn suppose there are two...

• Replies: 1
• Views: 2,457
07-02-2014, 01:33 PM
15. ### Dgrees of freedom of error sum of squares

For a given metal a experiment was carried out to measure the heat variation with temperature in Celsius.The heat was measured twice at each chosen...

• Replies: 2
• Views: 1,402
07-02-2014, 05:46 AM
16. ### Mediation analysis with the DV following a gamma distribution.

Hi there, I am in the early stages of data analysis and could really use some advise. Basically, I am testing whether music tempo influences...

• Replies: 5
• Views: 1,241
07-05-2013, 12:01 AM
17. ### Interpretation of results from multiple regression analysis

Hi all, I have just finished a multiple regression analysis for a school assignment. The model has Consumption as its dependent variable, and...

• Replies: 1
• Views: 1,772
01-11-2013, 08:52 AM
18. ### Constant SE from covariance matrix on Multiple Regression

Hi: I'm currently developing a Statistical package on Ruby, called statsample (http://ruby-statsample.rubyforge.org/), and I'm now working on...

• Replies: 1
• Views: 4,136
02-22-2010, 01:47 AM
19. ### Baseball stat fans?

I play on online Baseball simulator that uses numerous ratings and processes them through an engine which spits out a box score and results. I...

• Replies: 7
• Views: 1,203
01-15-2013, 04:46 PM
20. ### Comparing regression equations

I am thinking of trying to use the logit model to determine the probability of whether patients will participate in a particular health program. My...

• Replies: 2
• Views: 3,745
02-08-2009, 11:31 AM
21. ### 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: 10,416
09-08-2010, 09:44 AM
22. ### Complex stansardized Residuals

Dear all, I am doing some nonlinear regression and use mathematica to calculate the associated FitResiduals and StudentizedResiduals. I am a bit...

• Replies: 2
• Views: 2,444
10-21-2010, 12:23 PM
23. ### Estimating 1 cointegrating relationship when trace test indicates rank=2

Hi all, I am estimating a Vector Error Correction Model for several countries. For one country (call it X), the Johansen trace test suggests that...

• Replies: 0
• Views: 1,257
07-04-2014, 10:36 PM
24. ### Multilevel linear growth modelling: an appropriate method?

Hi, I'm just wondering if I am following the right line of thought for my analysis. I've got longitudinal data (4 years) and a single outcome...

• Replies: 0
• Views: 890
10-26-2012, 04:56 AM
25. ### GLM multivariate analysis with proportion & continuous data

Hi there, I am looking to perform some multivariate analysis on my data (such as canonical correlation analysis or multivariate multiple...

• Replies: 1
• Views: 2,783
10-11-2015, 04:11 PM
26. ### Easy question

Dear friends: I hope you can help me with this question: I have data of the identity for the GDP=C+I+G+X-M. If I regress C+I+G+X-M, in log...

• Replies: 1
• Views: 2,300
01-08-2011, 09:36 PM
27. ### Cluster Analysis

Hi all, I have a small sample of 75 participants. I'm conducting an exploratory study looking at psychological distress and gender role...

• Replies: 0
• Views: 2,852
11-29-2007, 11:26 AM
28. ### Ordinal Time-Series Dependent Variable

I am attempting to run a regression with an ordinal DV that is panel/time series data. I only have SPSS and with the ordinal DV, it seems I should be...

• Replies: 3
• Views: 1,832
01-23-2016, 05:00 PM
29. ### How can I find out how shifts in a country's fiscal policies affect economic health.

I have the values of below variables for 20 years for different countries. Could anyone suggest how I should go about this?How can I use regression...

• Replies: 1
• Views: 1,308
11-12-2013, 08:29 AM
30. ### Estimate the coefficients of an equation system - can I use OLS?

Hi! I have not worked so much with this type of regressions and have tried to find the answer in my econometric books and on internet, but have...

• Replies: 4
• Views: 1,680
04-24-2014, 04:18 PM
31. ### Logistic regression vs multiple regression

I have a 3 predictor variables that I am using to predict participation rates. How do I determine whether to use logistic regression or multiple...

• Replies: 1
• Views: 6,376
07-15-2009, 07:54 PM
32. ### How to pick the better model parameter in this example?

Let's say the model is fixed (e.g., a linear model where 5 coefficients need to be fit). Denote the parameter (coefficient) vector as \beta. ...

• Replies: 4
• Views: 1,840
12-10-2011, 03:07 PM
33. ### Can RSS be decreased to 0 when dimension increases?

Let's consider a simple example: I have two attributes X1 and X2, each has n values; response variable is Y. Using the two attributes together to...

• Replies: 7
• Views: 3,349
12-11-2011, 01:07 AM
34. ### Pleease help!? Filling in "blanks" in Regression Output

Hello! Can someone please explain, I need to fill in the blanks marked They provide this info in a row: Coeff:-9074.674 Std.Err: ?? ...

• Replies: 9
• Views: 3,231
01-07-2016, 07:42 AM
35. ### 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: 5,363
04-28-2012, 11:36 AM
36. ### Multivariate Regression - Percent Contribution to R^2

I'm running a multivariate regression in Stata 12 SE that regresses six different groups of independent variables onto my dependent. Each group has a...

• Replies: 1
• Views: 2,084
07-10-2012, 02:30 PM
37. ### Poynomial Regression through the origin

I am trying to program in SQL a polynomial regression of degree two with a zero intercept. I can't seem to find the appropriate literature on this...

• Replies: 8
• Views: 4,228
07-24-2012, 05:50 PM
38. ### Interaction effects in a logit model

Hi All Im running some logit models to investigate the determinants of a firms decision to donate/not donate to charity. My IVS include age,...

• Replies: 0
• Views: 1,064
05-19-2014, 12:37 AM
39. ### Measurement method for DV changed during longitudinal study

Hi All, I'm performing a data analysis on a dataset I didn't do the collection for, and I am contending with some odd decisions made by the people...

• Replies: 0
• Views: 923
11-30-2014, 06:36 PM
40. ### Measurement method for DV changed during longitudinal study

Hi All, I'm using regression analysis (multilevel linear and logistic) on a measure of children's health behaviours over 5 time-points of data. I...

• Replies: 0
• Views: 1,261
11-30-2014, 07:22 PM
41. ### Mediation Analysis With Longitudinal/Multilevel Data

Hi All, I'm trying to determine if it's possible to conduct mediation analysis on three-level data. I have data with repeated measures at five...

• Replies: 0
• Views: 2,808
08-26-2015, 09:05 PM
42. ### Poisson GLM: data set use; influence of counts

Hello Regression form, I am after a explanation in layman's terms of what's going on behind the scenes with a couple of GLM analyses I'm doing. ...

• Replies: 0
• Views: 4,417
01-16-2011, 02:46 AM
43. ### Determining Classification accuracy of a Multinomial Logistic Regression using R nnet

Hi, I am trying to assess the classification accuracy for a Multinomial Logistic Regression model using R. I have adapted the example below to my...

• Replies: 1
• Views: 1,680
08-03-2016, 09:50 PM
44. ### Confusion over the F-ratio in a hierarchical multiple regression

Hey all, I'm not used to work with multiple regression analysis, so I would be glad if anyone could help me interpreting this result: I...

• Replies: 1
• Views: 7,653
08-26-2013, 09:33 AM
45. ### Help with interaction terms

Hi, I have two categorical variables (race and field of study) as a part of my model to predict degree completion. In addition to the original model,...

• Replies: 1
• Views: 1,570
03-04-2015, 03:58 PM
46. ### Help me choose a regression model?

Hi everyone, I have the following problem in mind: Suppose m items are displayed to a user and the user can buy any one of them. Each of the items...

• Replies: 2
• Views: 1,783
04-20-2012, 08:17 PM
47. ### Repeat sales regression help

Hello everyone, I am in need of any help or guidance working on a repeat sales regression using spss. I am doing a repeat sales index on housing...

• Replies: 0
• Views: 4,876
04-05-2011, 04:36 PM
48. ### Moderation Analysis through Process by Andrew Hayes and SPSS regression analysis

Hello all, I need help analyzing some data for a moderation analysis. I have a continuous variable (predictor), Exhaustion, a continuous outcome,...

• Replies: 0
• Views: 3,249
08-09-2014, 10:22 PM
49. ### Estimating impact of Predictor

Hi, I have a simple regression with 24-36 months of data, let's say of Sales which is the dependant variable and % spend on promotions in that...

• Replies: 3
• Views: 156
09-22-2017, 08:59 AM
50. ### Doing logistic regression using epi-info

Hi there! I'd really appreciate help with this one. I'm finding the prevalence of anemia and its determinants. There are about 23 factors that...

• Replies: 0
• Views: 6,772
12-10-2006, 05:01 AM
51. ### Comparing regression coefficients - dependent samples

Hi, I used two methods (A and B) to obtain measurements in a group of subjects. The methods (ways of measuring) are different, but they should...

• Replies: 2
• Views: 1,926
07-17-2012, 07:07 AM
52. ### missing price datas before launched

HI, I have the price and volume data from own product and competitor's product: Year_Month Volume own product's price Volume ...

• Replies: 1
• Views: 1,552
07-06-2012, 11:10 AM

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