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# Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

1. ### regression interpretation

can some one help me when we can say the variable is stand alone ? whether we can say it, if the test result is significant or not?

• Replies: 1
• Views: 1,559
05-17-2013, 08:46 AM
2. ### What can you say about two measurement on the same element?

Dear all, This is my first post so please let me know if anything pratical is not in order. Im working at a production company where we produce...

• Replies: 1
• Views: 1,028
05-17-2013, 06:55 AM
3. ### Understanding regression analysis

Hello, we are in desperate need for a few answers :) Is Pearson Correlation between observed valued and predicted value between 0 and 1 only? Is...

• Replies: 3
• Views: 1,639
05-16-2013, 06:45 PM
4. ### Do I need to measure reliability?

Hey guys, I am very new to SPSS so please excuse me for my potentially stupid questions. So I started writing my thesis and everybody from my...

• Replies: 1
• Views: 1,792
05-16-2013, 10:35 AM
5. ### Hosmer and Lemeshow Test is significant

Hi all, can anyone tell me if one can still use a model which reports a H&L test with significant chi-square? (I have a very large sample - + 100...

• Replies: 25
• Views: 19,767
05-16-2013, 09:49 AM
6. ### Logistic Regression Problem - HELP!

A local health clinic sent fliers to its clients to encourage everyone, but especially older persons at high risk of complications, to get a flue...

• Replies: 6
• Views: 3,550
05-16-2013, 09:39 AM
7. ### Meaning of Control Variables

Hello everybody, I have a question about the meaning of control variables. Which of the following meanings is correct? 1. A significant control...

• Replies: 1
• Views: 1,164
05-16-2013, 08:13 AM
8. ### SPSS mixed models: meaning of difference in p-values between output tables?

Hi, I have a database which contains information from siblings, forcing me to learn about mixed models in order to correct for their relatedness. I...

• Replies: 0
• Views: 1,302
05-16-2013, 06:59 AM
9. ### Multiple Regression analysis

Hello Everyone, Can anyone please tell me, how one can compute the total score of dependent variables in order to do regression analysis?? ...

• Replies: 8
• Views: 1,924
05-16-2013, 02:31 AM
10. ### Multiple Lineair Regression - Interaction Terms

Hi all, At the moment I have a multiple regression with 2 variables and and interaction term. y = exchange rate changes x1 = macroeconomic...

• Replies: 0
• Views: 1,125
05-15-2013, 05:42 PM
11. ### negative semipartial correlations and their confidence intervals - help!

hi, i'm in a bind and was hoping someone could shed some light. I have determined negative partial coefficients, standardised partial coefficients,...

• Replies: 0
• Views: 1,393
05-14-2013, 07:14 PM
12. ### overall significance - interaction terms with dummy variables

Hi all, Can anyone please help me with a begginer's doubt: when we have an interaction term between one variable (X1) and a cat variable (3 cat. 2...

• Replies: 0
• Views: 1,497
05-14-2013, 06:16 PM
13. ### Ran logistic regression and wald and chi square results are confusing

So I ran a logistical regression on my data n=34 and am running into some issues. My Chi square results are showing significance (.001) with 8df. ...

• Replies: 1
• Views: 1,626
05-14-2013, 08:06 AM
14. ### Logistic Regression Undersampling Weight

Hi all, I am working on a logistic regression with rare events and I am implementing undersampling. My unadjusted model (without WEIGHT option) is...

• Replies: 0
• Views: 3,750
05-13-2013, 04:25 PM
15. ### 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: 5,512
05-13-2013, 10:32 AM
16. ### Logit regression of time-series (Beginner hoping to finish his thesis in one month)

(Sorry for eventual language mistakes, I'm a non-native english speaker) Hi people, I really don't like coming here to ask some help to people I...

• Replies: 1
• Views: 1,648
05-12-2013, 06:21 PM
17. ### Binary Logistic regression sample size using G Powe

Greetings, to no avail, I just cant figure out how to use g power to calculate a sample size. I've read and searched the internet, but still quite...

• Replies: 0
• Views: 1,996
05-12-2013, 05:26 AM
18. ### comparing logistic regression across groups?

Hello! I have a logistic regression model (let's call it M1) which was developed in an all-male sample. I would like to see if this model also...

• Replies: 0
• Views: 1,116
05-10-2013, 04:32 PM
19. ### Poisson regression fitting a quadratic term

Hi! I have been running a poisson regression and likelihood ratio tests to find the best model for my data. Everything is fine until I fit a...

• Replies: 1
• Views: 2,145
05-10-2013, 07:14 AM
20. ### hierarchical regression output interpretation

Hi everybody, I have a realy hard time interpreting hierarchical regression in general but I am reading a study now that really confuses me. Here...

• Replies: 0
• Views: 2,209
05-10-2013, 03:56 AM
21. ### The General Linear Model

So, I'm a grad student that survived my second doctoral stats course (complete with oral exam), but could never really wrap my mind around the main...

• Replies: 0
• Views: 1,248
05-09-2013, 09:14 PM
22. ### Non normal residuals and heteroskedasticity

I’m running a multiple regression model with 5 predictors (n >1000). Looking at the output the model fits the data well and the predictors behave as...

• Replies: 4
• Views: 1,316
05-09-2013, 11:02 AM
23. ### Help Regression Analysis - Serial Correlation & Newey Standard Errors

Hey everyone, I am currently performing a simple linear regression with one independent variable and a constant with time-series data for my...

• Replies: 0
• Views: 1,123
05-08-2013, 04:06 AM
24. ### Hypothesis Testing in Regression

I have fit a multilinear regression with response Y and predictors x1, x2, x3, x4 and x5. I have constructed a hypothesis i wish to test. The null is...

• Replies: 5
• Views: 2,960
05-07-2013, 11:58 PM
25. ### Multiple Regression Time Series - Remove positive correlation

Hello, I am currently analysing a serious of daily time-series data in a multiple regression model. When running the Durbin Watson tests I get...

• Replies: 1
• Views: 2,327
05-07-2013, 10:08 AM
26. ### What are the natures of a good moderating variable?

nnnnnnnnnnnnnnnnnnnnn

• Replies: 0
• Views: 1,248
05-06-2013, 09:16 PM
27. ### Regression on a triangular envelope

Hello, I hope I can explain this well. I have a triangular envelope of dat points to which I am fitting a line (* = data point, ---- = fit) *...

• Replies: 0
• Views: 1,316
05-06-2013, 06:23 PM
28. ### Which model?

Hi, I'm writing my master thesis and I don't really know which model to use. The response variable is a countvariable: the number of broilers...

• Replies: 7
• Views: 1,522
05-06-2013, 05:51 PM
29. ### Comparing importance of predictors - unstandardized or standardized beta?

Hi, can someone explain me should I compare importance of two predictors by their unstandardized or standardized beta? If both are significant, I...

• Replies: 3
• Views: 3,129
05-06-2013, 03:49 PM
30. ### Interaction effect significant but main effects not

Hi all, I was wondering if anyone could give me a help with my logit. I have a DV of disease vs. non-disease and 3 IV: dummy-year (year 1 vs year...

• Replies: 12
• Views: 20,788
05-06-2013, 01:46 PM
31. ### Relative regression analysis?

Hi, I am a new member of this thread. I need help with my hypothesis testing. Simply put, my hypothesis is " As A goes up, B and C go up but B...

• Replies: 7
• Views: 3,371
05-06-2013, 01:29 PM
32. ### Specific and common variables

Hello! I'm trying to build a regression model for forecasting. The problem is that some parameters, are common for all observations and one of them...

• Replies: 5
• Views: 1,912
05-06-2013, 12:08 PM
33. ### Multiple Lineair Regression - Another variable needed ?

Hey, I'm doing a research on 3 variables, exchange rates, macroeconomic news and net speculative positions. So far I have a regression with...

• Replies: 0
• Views: 768
05-06-2013, 04:39 AM
34. ### ROC curve question

1) In comparing the area under a ROC curve (C) do the models you are comparing have to be nested. I don't think so, but I wanted to be sure. 2)...

• Replies: 1
• Views: 984
05-05-2013, 06:47 AM
35. ### Lots of regressions!

Hi, I need to run a whole slew of regressions for a study. Should I use a more strict cut-off (e.g. p<0.01) and why? Thanks in advance! Jvic

• Replies: 5
• Views: 1,492
05-03-2013, 08:05 AM
36. ### Questions on simple linear regression

Hello ; I'm interesting in linear regression and i can't prove that: 1. ε ̂²=y²- y ̂² ? ($\hat\epsilon^{2}=y^{2}-\hat y^{2}$) ; Where ε is the...

• Replies: 0
• Views: 871
05-03-2013, 06:15 AM
37. ### Help Linear Regression Model with intercept vs no intercept for thesis

Hi everyone, I am currently building my linear regression model with two independent variables. The model looks like this: Libor as y= b0 +...

• Replies: 1
• Views: 1,240
05-03-2013, 05:51 AM
38. ### Fox's comments on multicollinearity (MC)

John Fox has written the most of the authors I have encountered on MC (in books and monographs on regression). I thought his comments were worth...

• Replies: 3
• Views: 1,992
05-02-2013, 01:00 PM
39. ### Regression on Growth Rates

Hi, Is it possible to run a regression on growth rates? The data set has data for orders and other world parameters like GDP, INCOME,...

• Replies: 0
• Views: 4,093
04-30-2013, 04:27 PM
40. ### reporting ordinal regression results

Hi, I have been working on analyzing a survey data using SPSS. I am supposed to use ordinal regression analysis. I have watched a couple of videos...

• Replies: 2
• Views: 3,232
04-30-2013, 03:47 PM
41. ### Question on Interpreting Variable/Model Specification

Hello, I'm currently trying to run a model displaying the relationships of my independent variables with interactions on a feeling thermometer. The...

• Replies: 10
• Views: 2,082
04-30-2013, 11:26 AM
42. ### Interaction effect in a logistic regression between cont and cat variables.

Hi guys, I am conducting a logistic regression on whether a participants test positive or not to HIV (1=positive; 0 Negative) in a sample of...

• Replies: 19
• Views: 5,802
04-30-2013, 10:28 AM
43. ### Setting up data for Linear Regression

Hi, I am new to statistics and have been learning for the past one week. I have a data set at work that they want me to run regression on and...

• Replies: 0
• Views: 1,823
04-29-2013, 06:25 PM
44. ### Comparing logistic regression nested models

I put this here rather than the SAS board, because I am not sure what I am saying about this test is correct. I have run across comments that you...

• Replies: 13
• Views: 6,700
04-29-2013, 03:51 PM
45. ### what test should be used to tell if two regression lines are significantly different

I have two lines in a x-y plot 1. observed migration distance (y) and predicted migration distance (x) (Y=0.95X+0.31, the slope coefficient and the...

• Replies: 4
• Views: 3,396
04-29-2013, 02:26 PM
46. ### How can I conduct a regression analysis with these data?

Hey, I am currently writing a working paper that attempts to find out which factors determine the location choice of Chinese firms when they invest...

• Replies: 0
• Views: 1,046
04-29-2013, 05:36 AM
47. ### Transformation for "L" shaped relationship between two variables

Hi, I am hoping to get some help with the following: The relationship between two variables (a predictor and the response) is "L-shaped" - that...

• Replies: 0
• Views: 1,632
04-29-2013, 04:07 AM
48. ### Baseball Regression Issue (STATA)

Hello!! I am glad a site exists like this where peole can compare information on this growing field. Baseball analytics is huge these days and I...

• Replies: 0
• Views: 2,136
04-28-2013, 07:05 PM
49. ### MA(q) model

Using ITSM I can find a model using a moving average of q terms. How do I know which value for q is best? For example I have the output for q=4...

• Replies: 0
• Views: 1,389
04-28-2013, 05:17 PM
50. ### what test to use tell significant difference of two quadratic regression curves

Hello I have two curves of quadratic regression models in a x-y plot 1. y=a1x^2+b1x+c1 Y= -0.51X2-0.88X+3.21, R2: 0.12, coefficient of the...

• Replies: 0
• Views: 1,554
04-28-2013, 07:45 AM
51. ### Multiple regression....panic

Hello! I think I need some help… I am trying to make a multiple regression and predict the stock market value (the variable OMXS30). I can say from...

• Replies: 1
• Views: 1,209
04-28-2013, 06:19 AM
52. ### Polynomial Regression

Hi, I have done a polynomial regression to some nonlinear (u-shaped) data by adding a squared term. Now, my R-squared 1.0 but my tolerance has...

• Replies: 1
• Views: 1,471
04-27-2013, 04:31 PM
53. ### Software for sensivity analysis

Hi There, I am looking for a software to go through sensivity analysis for nonlinear regression functions. Thanks

• Replies: 3
• Views: 1,550
04-26-2013, 06:39 PM
54. ### How to analyze data with more than one associated categorical dependent variables?

I have some dependent variables related to the growth of a company having categories like (e.g. for variables indicating net profit, financial...

• Replies: 4
• Views: 2,333
04-26-2013, 10:56 AM
55. ### Binary Logistic Regression with categorical predictors and interactions.

I'm new to logistic regression and the project I'm working on requires a model that involves two predictors: Experimental condition (categorical...

• Replies: 2
• Views: 2,309
04-26-2013, 10:38 AM
56. ### Longitudinal analyses

I'm currently analysing data in 15 and 17 years olds. I would like to track how certain variables change between the two time points. I've found that...

• Replies: 0
• Views: 2,842
04-26-2013, 04:10 AM
57. ### mediation/moderation analysis in a within-subject design (repeated measure design)

Hi, I hope you can help me with this issue: I have a within-subject design where some stimuli (positive negative or neutral) interference with...

• Replies: 1
• Views: 3,061
04-25-2013, 12:29 PM

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