1. Announcement:
Dason ‎(Devorador de queso)
05-10-2017
Views:
1,901
+ Post New Thread
Page 19 of 73 First 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 69 ... Last
Threads 1081 to 1140 of 4340

# Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. ### 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: 2,530
12-13-2011, 10:12 AM
2. ### 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: 2,074
12-14-2011, 08:42 AM
3. ### 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: 20,090
12-14-2011, 02:36 PM
4. ### 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: 11,703
12-15-2011, 08:22 AM
5. ### (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: 2,772
12-15-2011, 02:25 PM
6. ### 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: 1,395
12-17-2011, 08:43 AM
7. ### 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: 1,882
12-18-2011, 04:39 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: 8,840
12-18-2011, 11:09 PM
9. ### 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: 1,839
12-19-2011, 02:46 PM
10. ### 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: 3,312
12-20-2011, 05:18 PM
11. ### 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: 7,215
12-21-2011, 09:38 AM
12. ### 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: 3,298
12-21-2011, 11:06 AM
13. ### Logit coefficients interpretation...

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

• Replies: 2
• Views: 5,784
12-22-2011, 05:37 AM
14. ### 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: 2,021
12-24-2011, 12:16 AM
15. ### 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: 4,080
12-24-2011, 01:23 PM
16. ### P-value in regression analysis

How much should a p-value in a regression model be for the related variable to be considered insignificant?

• Replies: 6
• Views: 13,615
12-25-2011, 02:33 PM
17. ### Recoding inverted variables

Alright guys, so I conducted a multiregression analysis using SPSS and got the following result: STFDEM = 0,685 - 0,116POLINTR + 0,074POLDCS +...

• Replies: 0
• Views: 1,577
12-26-2011, 06:25 PM
18. ### non-integers in poisson GLM

Great forums, thank you to everyone who contributes to them. My question is regarding non-integer values from some data I collected on parrots...

• Replies: 7
• Views: 15,225
12-30-2011, 01:11 PM
19. ### Using mixed-effects models

Hello, I have been asking a series of questions within this forum and have had wonderful advice given. However as my statistics knowledge is...

• Replies: 2
• Views: 1,874
12-30-2011, 04:44 PM
20. ### interpreting log transformed co-effients in linear regression?

Hello, I have 1 continuous dependent and 1 predictor variable that I've logarithmically transformed to normalise the data and their residuals for...

• Replies: 6
• Views: 3,755
12-31-2011, 12:03 PM
21. ### Proportional Odds Models Programming Problem Using S-Plus

For ordinal logistic regression (proportional odds model), I need to define the following: For subject i, let (yi1, ..., yic) be binary...

• Replies: 0
• Views: 1,328
01-02-2012, 02:04 AM
22. ### Polynomial regression...how to solve a complex quadratic equation

Hi, The regression in question is: y= 216.44 -109.37X + 25.969 X^2 - 1.7699 X^3 where y = strength of strand board and X = amount of glue used...

• Replies: 1
• Views: 4,757
01-02-2012, 01:30 PM
23. ### Logistic regression (firm-level and country-level variables)

I am new to logistic regression and wonder how I can combine firm-level variables and country-level variables into the same regression. For the...

• Replies: 10
• Views: 2,895
01-02-2012, 10:45 PM
24. ### Can I use regression with a variable that is ordinal?

I hope that I am posting this in the right place- and I apologize if this has been addressed. I tried to look for it but couldn't find a similar...

• Replies: 1
• Views: 1,557
01-05-2012, 11:37 PM
25. ### Fitting a model with Bernoulli/Binomially distributed data

I am used to fitting data to estimate parameters in a model f(x,A) where x is my data point and A is the parameter(s) to be determined. To achieve...

• Replies: 6
• Views: 2,716
01-08-2012, 02:44 PM
26. ### (Li'l) theoretical question about correlations in regression...

hey y'all people!??! how're y'all doooin' huh? i hope everyone had the most awesomest holidays!!! heh. so... who else is feelin' the pinch this...

• Replies: 9
• Views: 3,147
01-09-2012, 02:44 AM
27. ### confidence intervals in logistic regression with clusters

Hi, this is probably a simple question but i hoped someone could explain it to me, I have carried out a logistic regression model assesing the...

• Replies: 0
• Views: 1,035
01-10-2012, 06:06 AM
28. ### [SOLVED] Logistic Regression - Confidence Intervals

Hi I'm running a logistig regression in SPSS 16.0 and have come across the following issue: when testing for different confidence intervals (95%,...

• Replies: 3
• Views: 2,093
01-10-2012, 12:27 PM
29. ### ridge regression example

Data Display Row x1 x2 y 1 1 1 2 2 5 4 5 3 5 5 6 4 5 6 6 5 ...

• Replies: 4
• Views: 7,988
01-11-2012, 01:43 AM
30. ### Simple Question Seasonal Autoregressive Model

Hi, I hope I'm posting this in an appropriate place. It's not exactly linear regression. If you have a seasonal moving average model like...

• Replies: 10
• Views: 3,168
01-11-2012, 02:27 PM
31. ### potential heteroskedasticity & autocorrelation problem with pooled cross-section data

hello 1) my data: i have collected a few thousand property transactions over the last 15 years. for each transaction i have got the price and the...

• Replies: 2
• Views: 4,087
01-11-2012, 03:56 PM
32. ### confidence intervals for linear regression

Hi, newbie here, so please forgive the bad terminology. I started with ten years of historical data. I used Excel to give me a linear trendline and...

• Replies: 3
• Views: 3,609
01-11-2012, 09:13 PM
33. ### Standard error of coefficients for ols vs regression through the origin

Hi guys, Thought I'd throw this out there officially since I'm having some trouble. I'm under the current impression that if you set up a...

• Replies: 9
• Views: 4,458
01-12-2012, 08:05 PM
34. ### GARCH errors

Hey, I wonder if you couldn't point me in the right direction on this. What I'm basically trying to do is replicate the method used in this paper:...

• Replies: 0
• Views: 1,470
01-13-2012, 03:21 AM
35. ### categorical variables in proc logistic

Hi together, i'm using proc logistic to optimize a model for closures on an insurance in dependence of several categorical variables. Due to...

• Replies: 2
• Views: 2,298
01-13-2012, 08:05 AM
36. ### Logistic regression (medicine)

Dear all, I have patients N=104 group1 n=43 with mild form of disease A (A1) group2 n=61 with severe form of disease A (A2) every patient...

• Replies: 4
• Views: 1,664
01-15-2012, 05:02 AM
37. ### Graphical representation and functions of non parametric confidence intervals

I calculated the 95% confidence intervals for alpha and beta coefficients through non parametric bootstrapping (10000 iterations). Now, I'd like to...

• Replies: 2
• Views: 3,277
01-15-2012, 07:05 AM
38. ### How to Guard Against Negative Probabilities in Multilevel Proportional Odds Model?

In SAS, it provides a "bound statement" to prevent negative probabilities for multilevel proportional odds model. How can I guarantee postive...

• Replies: 0
• Views: 1,271
01-15-2012, 10:35 PM
39. ### unable to make model Hessian positive definite - help!

Hello all, My first time posting here, and really hoping that someone can help me out! I have data from a repeated measures experiment in which...

• Replies: 0
• Views: 8,152
01-16-2012, 10:10 AM
40. ### using variance matrix

If you have a vector Q = , where Qi is a random variable, and a variance matrix var(Q) = how do you find the variance for Q1,Q2? Is there a...

• Replies: 4
• Views: 3,271
01-16-2012, 07:36 PM
41. ### stats var

The message you have entered is too short. Please lengthen your message to at least 10 characters.

• Replies: 1
• Views: 1,627
01-16-2012, 09:29 PM
42. ### IV results interpretation

Hello, I have an endougenous variable x and an instrument for it, variable z. The instrument is (significantly) negatively related to x. My...

• Replies: 0
• Views: 2,302
01-17-2012, 07:24 AM
43. ### Am i understanding Regression analysis? Theory question

Lets say, I have a list of all the hall of fame outfielders in MLB history. Along with data on, fielding ability, OBP, etc. Can I set up a...

• Replies: 1
• Views: 2,442
01-17-2012, 04:01 PM
44. ### Assumptions of Linear Regression and Time Series

Greetings, I am kind of confused while reading topics of Linear Regression and Time Series. There are bunch of assumptions to infer proper...

• Replies: 1
• Views: 9,460
01-18-2012, 12:05 PM
45. ### Logistic regression problem

Hi, I'm experiencing difficulties with understanding my results despite active googling, and i'd be really grateful, if someone could help me. ...

• Replies: 5
• Views: 4,061
01-18-2012, 11:01 PM
46. ### Iv probit

Hi, Is there a procedure to estimate a probit model in SAS using instrumental variables, like the IVPROBIT in STATA? Thanks!

• Replies: 2
• Views: 4,002
01-18-2012, 11:26 PM
47. ### moderator as a categorical variable -- really desperate please help!!!!

1. how do you conduct moderation analysis in SPSS when the moderator is a categorical variable (3 levels represented respectively by +1 (active...

• Replies: 2
• Views: 2,749
01-19-2012, 12:29 AM
48. ### Enter the product term of 2 variables in linear regression?

How can you enter the product term of 2 variables in linear regression? One is gender (categorical) and the other one is continous (Scored 1-200). ...

• Replies: 1
• Views: 2,352
01-19-2012, 04:15 AM
49. ### How to prove E(SSE)=(n-2)singma^2 ???

I'd like to know to how to prove E(SSE)=(n-2)singma^2 (SSE=Syy-BetaHat1*Sxy) . Ive been workin' on it for many days but still cant figure it out....

• Replies: 4
• Views: 13,669
01-19-2012, 10:44 AM
50. ### Negative linear regression (time value)

hey all, I'm working on a basic program for calculating the time remaining as a battery of a device runs down from 100% (full) to 0% (empty). ...

• Replies: 1
• Views: 1,724
01-19-2012, 12:57 PM
51. ### Post hoc in ANCOVA

I'm trying to conduct a post hoc test on the results of an ANCOVA: > model <- aov(Max~Weight*Diet) > summary(model) But when I run the Tukey...

• Replies: 5
• Views: 8,095
01-20-2012, 07:59 AM
52. ### Variance Extracted and Multicollinearity in Structural Equation Model

Hello, I am a new user here, and I am quite in need of help with regards to statistical problems. :) I really appreciate it if anyone can help me. ...

• Replies: 0
• Views: 6,195
01-20-2012, 12:56 PM

+ Post New Thread
Page 19 of 73 First 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 69 ... Last

#### Thread Display Options

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.