1. Announcement:
05-10-2017
Views:
1,782
Page 55 of 73 First ... 5 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 Last
Threads 3241 to 3300 of 4336

# Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. ### Correlation between reaction time (RT) and accuracy.

In a two choice task, for each participant, I want to show that the faster is RT, the higher is the probability for incorrect response. Is it...

• Replies: 3
• Views: 3,994
12-24-2011, 01:23 PM
2. ### Control variable correlated with binary treatment variable

This question regards a social program evaluation which involves participants receiving a binary treatment that they self-select into. Some of these...

• Replies: 0
• Views: 2,004
12-24-2011, 12:16 AM
3. ### Logit coefficients interpretation...

Logistic regression Number of obs = 1315 LR chi2(32) = ...

• Replies: 2
• Views: 5,746
12-22-2011, 05:37 AM
4. ### Linear Model Prediction

I'm working on a linear model that looks like: Price = B0 + B1(Gender) + B2(Age) + B3(Credit Type) + B4(Home) ... The predictior is price, and...

• Replies: 13
• Views: 3,261
12-21-2011, 11:06 AM
5. ### Stepwise selection and dummy variables

Hi Can you do forward or backward selection if there are categorical variables involved? If you can, how can it be done? Is there a way to...

• Replies: 9
• Views: 7,119
12-21-2011, 09:38 AM
6. ### Partialling out covariates

Hi, I have a situation where I have Y_it = a_i + dT_it + X'_itB + e_it T is multi-valued and exogenous. It is correlated with some of the...

• Replies: 1
• Views: 3,269
12-20-2011, 05:18 PM
7. ### detecting a variance trend in random effects

Greetings I have a measurements on grouped individuals. There are approximately 100 groups, and approximately 500 individuals per group, with...

• Replies: 0
• Views: 1,815
12-19-2011, 02:46 PM
8. ### Choosing predictor variables to use in multiple linear regression models

I want to figure out what combination (both individual variables and interactions, if any) of independent variables predict my dependent variable....

• Replies: 2
• Views: 8,792
12-18-2011, 11:09 PM
9. ### dummy varibles

i have some data where i am trying to see if there is any salarie discrimination in gender between men and women do i need to make a dummy for...

• Replies: 2
• Views: 1,867
12-18-2011, 04:39 PM
10. ### Not sure what kind of regression to run here, plus extra ?'s

Hey there. Frustrated grad student who's never been good at math here. :P Suffering through a final project, could use some input. We're using...

• Replies: 0
• Views: 1,383
12-17-2011, 08:43 AM
11. ### (easy?) Partial slope coefficients question...

Slopes from auxiliary regressions where each variable is regressed on one of the others. Variables have all been mean-deviated so the constant terms...

• Replies: 0
• Views: 2,737
12-15-2011, 02:25 PM
12. ### Firm Fixed Effects

In some regressions the the authors control for “firm fixed effects”. What does that mean? What are Firm fixed effects specifically? Are they just...

• Replies: 4
• Views: 11,642
12-15-2011, 08:22 AM
13. ### Regression when outcome is a rank?

Is there a particular kind of regression if the outcome is a ranking? I'm wondering if my best bet would be to use the central limit theorem and use...

• Replies: 15
• Views: 19,901
12-14-2011, 02:36 PM
14. ### Multivariate regression analysis

Hi guys, I have a conceptual question. I was taught that when building a multivariate regression analysis, let's say y=b0+b1X1+b2X2, I interpret...

• Replies: 2
• Views: 2,052
12-14-2011, 08:42 AM
15. ### two ANOVAs, which to use?

Hypothetical: you have ANOVA tables from two regressions. One is regressed on more variables than the other. The one with more variables, has a low...

• Replies: 6
• Views: 2,505
12-13-2011, 10:12 AM
16. ### Help-The F or chi2 model statistic has been reported as missing

Hello All, I use Robust regression for event study- cross sectional. I have 25 industries dummies (0,1) in my regression and always "Adj...

• Replies: 0
• Views: 5,026
12-13-2011, 08:30 AM
17. ### Assumptions of Quantile Regression

Is equal variance an assumption of quantile regression? Does quantile or median regression have any assumptions? Thanks.

• Replies: 1
• Views: 3,220
12-12-2011, 02:07 AM
18. ### partial r2 vs partial correlation vs stnd coefficients

Hi all, I have run a few linear regression models predicting water quality for watersheds using explanatory variables such as mean impervious...

• Replies: 9
• Views: 20,115
12-11-2011, 09:02 PM
19. ### How to antilog a regression

Hi, My excel regression produced the following: Coefficient Constant 6.5804 Log(Unit_Produced) -0.4752 The...

• Replies: 4
• Views: 9,788
12-11-2011, 05:12 PM
20. ### Linear Regression: Mean square error (MSE) ?

Simple linear regression model: Y_i = β0 + β1*X_i + ε_i , i=1,...,n where n is the number of data points, ε_i is random error Let σ^2 = V(ε_i)...

• Replies: 11
• Views: 55,354
12-11-2011, 12:32 PM
21. ### 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: 3,300
12-11-2011, 01:07 AM
22. ### 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: 1,816
12-10-2011, 03:07 PM
23. ### Endogenous variable

Hi, I am implementing a two-stage OLS regression to account for the endogeneity of a variable. My instruments are time invariant. However, the...

• Replies: 1
• Views: 1,433
12-10-2011, 12:30 PM
24. ### Testing a predictive algorithm

I have an algorithm that takes text data and predicts polarity of the data between -1 and 1. I want to test this algorithm for it's ability to...

• Replies: 7
• Views: 2,889
12-08-2011, 07:38 PM
25. ### question about Logistic regression

Hi, I've wondered about logistic analysis. In glm(generalized linear model), link function value of mean = linear predictot. So, classical model's...

• Replies: 2
• Views: 2,034
12-08-2011, 07:50 AM
26. ### Ordinal Logistic vs. Multinomial Regression and program

I am trying to conceptually understand when I would use ordinal logistic vs. multinomial. It seems to me that if there is an order to the categories...

• Replies: 2
• Views: 2,795
12-07-2011, 08:04 PM
27. ### GEE and sample size

Hello, I'd like to know how to correct for small sample size in GEE.

• Replies: 1
• Views: 2,918
12-07-2011, 03:44 PM
28. ### negative binomial regression

hello all, i'm looking for some articles regarding negative binomial regression. i don't know much about general linear models or logistic...

• Replies: 2
• Views: 2,369
12-06-2011, 02:03 PM
29. ### Which method to compare models with truth?

Hi all, Edit: First I must say sorry for the ridiculous spelling mistake in the title! I wish I could go back and change 'two' to 'to'. I have...

• Replies: 4
• Views: 2,056
12-06-2011, 11:49 AM
30. ### compare Spearman's correlations

Dear all, I performed several Spearman's correlation tests between the same independent variable and different dependent ones. All the...

• Replies: 2
• Views: 3,283
12-06-2011, 05:07 AM
31. ### Advice for random effects with interaction term?

I have a continuous dependent variable A and a continuous independent variable B. I measured these variables in 12 locations that can be separated...

• Replies: 1
• Views: 3,743
12-05-2011, 03:26 PM
32. ### Can I trust a regression if variables are autocorrelated?

Hello everyone! Both variables (dependent and independent) show autocorrelation effects. When I run regression and estimate the residuals, they...

• Replies: 6
• Views: 2,737
12-04-2011, 10:59 AM
33. ### Question about a question

Thanks for the help!

• Replies: 3
• Views: 2,804
12-03-2011, 09:59 AM
34. ### Model evaluation in logistic regression

I am doing the analysis in very recent forms of SAS (if any use that here). I ran a logistic model with a huge number of data points (some 11,000)....

• Replies: 6
• Views: 6,265
12-02-2011, 04:14 PM
35. ### linear regression where the indepedant variables are parameters

I have a single independent variable, X, in the following regression model: Y = \beta_0 + \beta_1 * X + e where X = mean(X_xy) X_xy is a...

• Replies: 0
• Views: 1,807
12-02-2011, 10:29 AM
36. ### Proportion of positive reponses in a logistic regression

Hello, When we do a logistic regression to predict a dichotomous variable (yes/no), should there be some minimum proportion of yes to no responses...

• Replies: 3
• Views: 2,623
12-02-2011, 06:30 AM
37. ### Beta positive - Slope of best fit line negative

hello, scratching my head over some regression output i'm getting from Excel. as you can see from below, the best fit line on my indeptendent...

• Replies: 16
• Views: 9,971
12-01-2011, 03:20 PM
38. ### The Mediation Analysis by Regression

Hi All, Does Anyone Know a good reference to conduct the Mediation Analysis by Regression by SPSS? Many thanks, Gh

• Replies: 4
• Views: 3,069
12-01-2011, 12:13 PM
39. ### Interpreting Interaction Terms

I am working on a regression analysis problem where we have to see if there is an interaction between two of the independent (X) variables. I run...

• Replies: 3
• Views: 1,946
11-30-2011, 12:26 PM
40. ### Displaying multiple regression

Dear stats experts - I wondering if it's possible to display a multiple regression with three predictors that are all significant on a graph. ...

• Replies: 0
• Views: 1,605
11-30-2011, 06:50 AM
41. ### log-transformation and interaction effects

If I log-transform either one of my predictor variables or my outcome variable, can that change the significance of any of my interaction terms? ...

• Replies: 0
• Views: 3,844
11-29-2011, 07:51 PM
42. ### Assumptions of logistic regression

Anyone know a good authoritative source for the assumptions of logistic regression? They differ obviously from OLS and I have not found a good source...

• Replies: 47
• Views: 81,015
11-29-2011, 07:40 PM
43. ### Panel Data Analysis, Help Urgently Needed! Fixed & Random effects, Fama MacBeth etc.

Hi, I have the following panel dataset: 11 years of annual data with a total of 250 observations. The panel is highly unbalanced, in the beginning...

• Replies: 0
• Views: 6,090
11-29-2011, 04:34 PM
44. ### Rm anova ?

Hi guys, I need a confirmation... I have a research containing 4 groups, 3 treatments and a control group. For every subject, there are...

• Replies: 0
• Views: 1,585
11-29-2011, 01:51 PM
45. ### Durbin-Watson table

Hi.. Anyone here know how to determine whether we violated the assumption for durbin watson test... i found the table but the max sample size is...

• Replies: 3
• Views: 4,910
11-29-2011, 11:11 AM
46. ### Logit versus Probit versus Linear Probability Coefficients

Hi all, Fairly simple question... What exactly are the meanings of the coefficients in logit, probit, and linear probability models? I'm staring...

• Replies: 2
• Views: 3,907
11-28-2011, 04:49 PM
47. ### 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: 6,839
11-28-2011, 04:36 PM
48. ### standardized beta that suddenly rise very high

Hi guys... i need help here... i don't understand why one of my variable (old_adult) standardized beta can increase from .144 which is not...

• Replies: 0
• Views: 1,863
11-27-2011, 11:29 PM
49. ### Possible to do a post hoc correction?

I am trying to understand a multiple regression problem I have. The problem is that one of my independent variables has a bivariate correlation to...

• Replies: 1
• Views: 2,129
11-27-2011, 12:04 PM
50. ### Linear regression on seemingly linear data, but residual plot is a parabola?

So I did a linear regression on x y data that seemed very linear, but the residual plot was a a clear parabola. Next I did a 2nd order polynomial...

• Replies: 2
• Views: 6,063
11-27-2011, 05:56 AM
51. ### linear regression -- the regressor X is random

Hi, I am studying linear regression from the book titled, "Introduction to Linear Regression" by Montgomery. I am reviewing some previous...

• Replies: 0
• Views: 3,913
11-26-2011, 02:30 AM
52. ### confidence band from se in quadratic regression

Hi, I have the following problem: I want to draw confidence band for a quadratic regression I have the model: y=a+b*x+c*x^2, i have...

• Replies: 0
• Views: 1,462
11-25-2011, 07:29 AM
53. ### Basic multiple regression question

Sorry, should've probably specified linear regression. I was given a data and ran a proc corr on it in sas. As you can see, x1 through x5...

• Replies: 7
• Views: 2,292
11-25-2011, 05:22 AM
54. ### Multilevel modeling with poission regression

Hi, I am using the software package HLM to perform a poisson regression on categorical data that is clustered. The responses are ranked in order...

• Replies: 0
• Views: 1,748
11-24-2011, 03:42 AM

Use this control to limit the display of threads to those newer than the specified time frame.

Allows you to choose the data by which the thread list will be sorted.

Note: when sorting by date, 'descending order' will show the newest results first.