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# Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. ### Controlling for time

Hello, Thank-you for taking the time to read this post. I have managed to get myself very confused about what is (hopefully) quite a simple...

• Replies: 0
• Views: 60
10-16-2017, 08:15 AM
2. ### Controlling mediation effect in a binary logistic regression

Hi everbody, It's my first post and I hope I posted in the right forum. In my master thesis I use binary logistic regression: a dichotomous...

• Replies: 2
• Views: 2,811
03-24-2015, 03:14 PM
3. ### Contructing an econometrics project

Hi guy. I'm doing a econometrics project and I have been given a task to find out what factors determine the male wage. I have been given a lot...

• Replies: 3
• Views: 1,850
04-06-2013, 10:01 PM
4. ### Converting a continuous variable into a categorical variable (low, medium, high)

I have a continuous dependent variable (scores on an exam) and a number of predictor variables that I'd like to use in a regression analysis, such as...

• Replies: 4
• Views: 159
10-17-2017, 10:43 AM
5. ### 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
6. ### Converting nominal dependent to interval variables through use of dummy variables

Dear all, My research involves the independent interval variable of Socio-Economic Status (SES), the ordinal independent variable of self-efficacy...

• Replies: 5
• Views: 1,607
03-27-2014, 11:41 AM
7. ### Cook distance and leverage

I have a data point for which leverage value is > 3(p+1)/n but the value of cook's distance is < 1. Can i say that, this is an outlier but it is...

• Replies: 1
• Views: 5,554
01-02-2011, 07:33 PM
8. ### Cook's distance for nonlinear regression

Cook's distance was used to detect outliers in a linear regression model. But is it ok to use it with non-linear regression model?

• Replies: 0
• Views: 3,525
02-17-2013, 06:58 PM
9. ### Cook's Distance on WLS?

I am working with clustered data in R and am running a weighted least squares regression, weighting based on the number of elementary units in the...

• Replies: 0
• Views: 1,483
07-20-2012, 03:11 PM
10. ### cooks distance cutoff

Hello, I urgently need to find out what is happening in regards to below: I am doing a huge number of simple linear regressions. For each...

• Replies: 9
• Views: 10,473
08-08-2014, 10:18 PM
11. ### Corporate Governance Explanations effects on Firm Value

Hi all, I'm quite new to statistics and need some guidance for my dissertation. The University is messing up with my supervisor resulting in me...

• Replies: 1
• Views: 2,680
07-08-2015, 08:51 AM
12. ### Correct interpretation of Lmer output

I have produced the following model ...

• Replies: 0
• Views: 3,978
04-19-2013, 10:05 AM
13. ### correct regression model for dependent variable

Hi all, I am new to this forum and I hope that the qestions that are bothering me can be answered together with your help. I have data (N=220)...

• Replies: 11
• Views: 2,367
02-12-2015, 08:47 AM
14. ### Correct statistical test to use for my data (correlation/regression)

Hello everyone, Potentially a silly question (but I am new to all of this): I have collected data from a focal animal study on Naked mole-rats....

• Replies: 0
• Views: 1,103
03-13-2015, 06:13 AM
15. ### Correct structuring of random effects?

Hi I have produced a mixed effects model as follows; lmer(TotalPayoff~Type+Game+PgvnD*Asym+(1|Subject)+(1|Pairing),REML=FALSE,data=table1)- ...

• Replies: 0
• Views: 1,254
04-19-2013, 09:27 AM
16. ### Correcting for endogeneity a panel count model with interactions using IV approach

Hello dear forum members, My study examines the impact of online (a) reputational status, and (b) reviews on physicians’ performance, as proxied...

• Replies: 0
• Views: 1,291
07-25-2015, 09:52 AM
17. ### Correcting for omitted variable bias without including problem variables?

Hi All, I asked something similar earlier but I don't think I was very clear (so I will try again). I want to run a regression, let's say it is...

• Replies: 3
• Views: 4,195
06-26-2013, 02:55 PM
18. ### Correcting for regression to the mean in mixed effects model of longitudinal data?

Hey everyone, I know you can correct for regression to the mean for two time points, in a before and after scenario. But does anyone know how to...

• Replies: 0
• Views: 1,637
09-21-2015, 02:35 PM
19. ### Correcting lack of fit

I have a very simple data set with a single regressor that has all negative values. The data set provides no context, only values. When testing...

• Replies: 4
• Views: 2,051
10-21-2012, 02:01 PM
20. ### Correlation

Hi! I was wondering if someone could give me some help. I am struggeling to understand how to run my correlation analysis using SPSS This is my...

• Replies: 6
• Views: 2,752
08-17-2010, 08:44 AM
21. ### Correlation

Is it possible to correlate two categorical variables? I have a data on building homes in different cities. I want to show correlation on how...

• Replies: 2
• Views: 1,263
02-09-2014, 01:39 AM
22. ### Correlation among a paired multiple vairable for a special case

Hi all, I've run into a stats problem that I can't figure out. I have a pair of linked variables (x,y) that I want to correlate with a third...

• Replies: 1
• Views: 274
08-07-2017, 06:41 PM
23. ### Correlation and Multiple Regression

Can you please help me understand the following questions - 1. Looking at correlations and scatterplots how can we determine if multiple regression...

• Replies: 0
• Views: 1,714
04-23-2011, 03:32 AM
24. ### Correlation and regression

Hello, it would be nice if you could provide the appropriate theoretical steps for the following task: There is a shop which also operates a pub....

• Replies: 0
• Views: 1,027
DZ8
01-30-2016, 08:00 AM
25. ### Correlation and Regression Assignment Using BRFSS

"For this assignment you must collect some state-level variable of your choice and merge it to the BRFSS individual-level data (matching by state...

• Replies: 0
• Views: 2,791
10-13-2010, 09:28 PM
26. ### Correlation between four parameters

Dear memebers, I need to make correlation between four parameters; how can I do it and by which outil it's possible? Can someone please tell me...

• Replies: 1
• Views: 2,147
10-20-2013, 12:32 PM
27. ### Correlation between predictive variables in multiple regression

I have several response variables which are explained by many different explanatory variables. I have one value for each day for each variable, both...

• Replies: 1
• Views: 2,130
06-22-2011, 01:46 PM
28. ### 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: 4,082
12-24-2011, 01:23 PM
29. ### Correlation between two non stationary time series

Hey everyone, I'm trying to figure out if there is significant correlation between two non stationary time series (e.g. temperature on a a given...

• Replies: 9
• Views: 3,979
08-01-2014, 02:03 PM
30. ### Correlation coeffcient

I have no idea where to begin with this. If someone could guide me into the right direction, please. If the correlation coefficient is 0.97, what...

• Replies: 1
• Views: 3,070
03-05-2011, 09:23 AM
31. ### Correlation Coefficient

Suppose X is transformed to cX, and Y is transformed to dY where c and d are constant, what happens to the correlation coefficient?? Is it...

• Replies: 0
• Views: 1,705
10-14-2011, 04:50 AM
32. ### Correlation coefficients as a variable in a multiple regression?

Hi I would like to do a multiple regression using correlation coefficients as my dependent variable - is this possible? Specifically the...

• Replies: 1
• Views: 3,855
02-02-2010, 10:35 PM
33. ### Correlation for a sample with constant dependent variable

Hello everyone, I hope I got the right subforum! I would really appreciate if someone takes the time to help me and guide me into th right...

• Replies: 0
• Views: 1,457
09-03-2015, 09:11 AM
34. ### Correlation for Binary Target Variable

Hi, Just need someone to do a sanity for me. In linear regression, one might want to transform (log, power, etc...) a continuous independent...

• Replies: 0
• Views: 959
02-03-2016, 12:01 AM
35. ### Correlation for different level of volatility

Hi, I need to estimate correlation between 2 variables across quantiles of volatility (volatility is an independent variable).. I want to show how...

• Replies: 0
• Views: 1,392
09-09-2014, 11:37 AM
36. ### correlation in multi-level model

In a multi-livel model where level 1 is within-person and level 2 is between-person, can level 1 be a simple correlation between two within-person...

• Replies: 2
• Views: 1,053
10-23-2015, 01:40 PM
37. ### correlation of trends?

Hi, I have extracted trends from two time series (one correspond to some climate parameters, the other one to chemical composition of tree...

• Replies: 1
• Views: 3,184
07-27-2014, 04:11 PM
38. ### Correlation test for PCA

Hello, I have done two independent PCA (Principal component analysis) with two different datasets in R. I have made interpolated geographic maps...

• Replies: 0
• Views: 1,436
01-29-2013, 08:27 AM
39. ### Correlation VS linear regression using proportional data

Hi, I was hoping someone may be able to assist. I have discussed this with two people who understand a great deal about stats, although I read...

• Replies: 0
• Views: 3,136
09-28-2016, 11:52 AM
40. ### Correlation with control group

Hi! Sorry if this is a very basic question. If you have two groups: diseased and control. Both groups undergoes an intervention giving you two...

• Replies: 2
• Views: 1,917
12-28-2013, 10:20 AM
41. ### Correlation with residuals of regression

Hi all, Let's say I have one DV (X) and 5 IV's, A, B, C, D and E. I'm specifically interested in the effect of E. I could perform a regression...

• Replies: 3
• Views: 2,312
11-07-2016, 10:18 AM
42. ### could not find the command for "logistic regression" under analyze in SPSS19

I have been tryibg to do a logistic regression in SPSS 19. But somehow I could not find the option/command in the "regressions" section under...

• Replies: 0
• Views: 960
08-29-2012, 10:26 PM
43. ### Count data independent variable

I am going to run a regression using count data as independent variables, with the dependent variables being the amount of investment in £. Given...

• Replies: 3
• Views: 5,527
05-13-2013, 10:32 AM
44. ### count data with no zero counts, Poisson?

Well I appear to have zero deflate data. I will likely treat it as multilevel with clusters, but I was wondering if there was a count approach (e.g.,...

• Replies: 3
• Views: 2,777
12-19-2014, 10:45 PM
45. ### Country Variable

Hi Stata Experts, I have a question concerning an idea for my thesis. I have firm-specific data (assets, sales, income etc.) for different firms...

• Replies: 0
• Views: 1,121
10-11-2016, 08:27 AM
46. ### Country-level Clustering

Hi All, I have a database on firms that went bankrupt/not bankrupt from 1999-2011 across 30+ countries. I have included year fixed effects in my...

• Replies: 1
• Views: 1,189
10-29-2015, 02:34 AM
47. ### cov (yi, yi*)

solved delete

• Replies: 0
• Views: 2,561
04-25-2014, 09:59 PM
48. ### Cov in multiple linear regression

For multiple linear regression model Y = Xβ + e, assume X is non-random. Assume Gauss-Markov assumptions hold. Show that variance-covariance matrix...

• Replies: 3
• Views: 5,375
06-19-2009, 09:32 PM
49. ### Covariance

Hi, I'm studying econometrics and have been utterly swamped by this question. I have a set of statistics in the question. Mean of X, Mean of Y,...

• Replies: 0
• Views: 1,272
04-11-2014, 09:19 AM
50. ### Covariance and Correlation for Regression Model

I've been looking over some regression models lately and I came across one which, although similar, differs from the "standard" simple linear model....

• Replies: 0
• Views: 1,281
10-30-2012, 08:32 PM
51. ### covariance and variance of BLUE

Consider an RBD with 5 replications and 4 treatments t_1,t_2,t_3,t_4. We are given the following three treatment-contrasts: \frac{t_1-t_2}{2}...

• Replies: 8
• Views: 2,636
06-12-2011, 11:13 AM
52. ### Covariance of residual

I'm given the mutiple regression equation Y = XB + e I have to find the covariance between e_hat and Y First what I did was changed e_hat =...

• Replies: 0
• Views: 3,698
09-03-2011, 08:52 PM
53. ### cox model with time dependent covariate

I am trying to fit a cox model: h(t, beta) = h0(t)exp(X*beta), while X = (x1, x2, ..., xN) but, for instance, x1 is binary with value of 0 or 1,...

• Replies: 1
• Views: 1,699
02-20-2014, 11:37 PM
54. ### Cox PH regression on fixed-interval (1, 2, 5-year) survival

Dear all, I am co-author on a manuscript on a study which follows a group of patients from a certain diagnosis and studies risk factors for...

• Replies: 0
• Views: 1,369
05-15-2014, 05:42 AM
55. ### Cox proportional hazard

I am trying to understand how to interpret the change in the hazard function for a one unit change in a dummy predictor. I know for a continuous...

• Replies: 3
• Views: 1,703
08-12-2014, 01:00 PM
56. ### cox regression

I am new to this method, so I started this thread for questions on it. :p Some discussions of Cox treat it as a counting process and others do...

• Replies: 4
• Views: 2,187
09-08-2014, 02:16 PM
57. ### cox regression

This is interested in surival time to an event and deals with time series data inherently, including the use of lagging indicators in some cases....

• Replies: 1
• Views: 1,196
01-25-2015, 03:01 PM
58. ### Cox Regression - time dependent

Dear all, I have a question regarding the cox regression. I have conducted a dataset with Top50 Boxoffice Data for the U.S market. It contains...

• Replies: 3
• Views: 2,076
05-02-2016, 09:45 AM

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