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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Post 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?

    Started by samsuprl‎, 05-17-2013 08:13 AM
    • Replies: 1
    • Views: 1,559
    05-17-2013, 08:46 AM Go to last post
  2. Question 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...

    Started by MrAndy‎, 05-17-2013 05:13 AM
    • Replies: 1
    • Views: 1,028
    05-17-2013, 06:55 AM Go to last post
  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...

    Started by Ywannah‎, 05-16-2013 10:56 AM
    • Replies: 3
    • Views: 1,639
    05-16-2013, 06:45 PM Go to last post
  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...

    Started by IvLi‎, 05-16-2013 08:29 AM
    • Replies: 1
    • Views: 1,792
    05-16-2013, 10:35 AM Go to last post
  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...

    Started by PedroR‎, 05-14-2013 06:19 PM
    2 Pages
    1 2
    • Replies: 25
    • Views: 19,767
    05-16-2013, 09:49 AM Go to last post
  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...

    Started by aweimer‎, 05-15-2013 04:53 PM
    odds, regression analysis
    • Replies: 6
    • Views: 3,550
    05-16-2013, 09:39 AM Go to last post
  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...

    Started by NewStat‎, 05-16-2013 04:46 AM
    • Replies: 1
    • Views: 1,164
    05-16-2013, 08:13 AM Go to last post
  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...

    Started by denvdm‎, 05-16-2013 06:59 AM
    • Replies: 0
    • Views: 1,302
    05-16-2013, 06:59 AM Go to last post
  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?? ...

    Started by ashima‎, 05-15-2013 07:52 AM
    • Replies: 8
    • Views: 1,924
    05-16-2013, 02:31 AM Go to last post
  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...

    Started by Denniono‎, 05-15-2013 05:42 PM
    exchange rates, interaction, multiple, regression
    • Replies: 0
    • Views: 1,125
    05-15-2013, 05:42 PM Go to last post
  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,...

    Started by delia‎, 05-14-2013 07:14 PM
    • Replies: 0
    • Views: 1,393
    05-14-2013, 07:14 PM Go to last post
  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...

    Started by PedroR‎, 05-14-2013 06:16 PM
    • Replies: 0
    • Views: 1,497
    05-14-2013, 06:16 PM Go to last post
  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. ...

    Started by disliked23‎, 05-13-2013 11:26 PM
    • Replies: 1
    • Views: 1,626
    05-14-2013, 08:06 AM Go to last post
  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...

    Started by Marcio_m_r‎, 05-13-2013 04:25 PM
    • Replies: 0
    • Views: 3,750
    05-13-2013, 04:25 PM Go to last post
  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...

    Started by maltesedog‎, 05-13-2013 10:05 AM
    • Replies: 3
    • Views: 5,512
    05-13-2013, 10:32 AM Go to last post
  16. Smile 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...

    Started by sim007k‎, 04-25-2013 10:55 AM
    • Replies: 1
    • Views: 1,648
    05-12-2013, 06:21 PM Go to last post
  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...

    Started by johnnie04‎, 05-12-2013 05:26 AM
    • Replies: 0
    • Views: 1,996
    05-12-2013, 05:26 AM Go to last post
  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...

    Started by will22‎, 05-10-2013 04:32 PM
    • Replies: 0
    • Views: 1,116
    05-10-2013, 04:32 PM Go to last post
  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...

    Started by Mo201‎, 05-10-2013 04:21 AM
    • Replies: 1
    • Views: 2,145
    05-10-2013, 07:14 AM Go to last post
  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...

    Started by Mar_ian‎, 05-10-2013 03:56 AM
    hierarchical, hierarchical regression, psychology
    • Replies: 0
    • Views: 2,209
    05-10-2013, 03:56 AM Go to last post
  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...

    Started by TRANOVA‎, 05-09-2013 09:14 PM
    • Replies: 0
    • Views: 1,248
    05-09-2013, 09:14 PM Go to last post
  22. Non normal residuals and heteroskedasticity

    Im 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...

    Started by loops22‎, 05-09-2013 08:40 AM
    • Replies: 4
    • Views: 1,316
    05-09-2013, 11:02 AM Go to last post
  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...

    Started by JenJ‎, 05-08-2013 04:06 AM
    • Replies: 0
    • Views: 1,123
    05-08-2013, 04:06 AM Go to last post
  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...

    Started by Wizboar‎, 05-07-2013 08:29 PM
    • Replies: 5
    • Views: 2,960
    05-07-2013, 11:58 PM Go to last post
  25. Regression fitted values

    I'm working with a dataset that I'm using to model total biomass (which was a variable created by adding three components of biomass). I also modeled...

    Started by zlj.pr‎, 05-05-2013 05:20 PM
    • Replies: 3
    • Views: 2,660
    05-07-2013, 07:12 PM Go to last post
  26. 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...

    Started by JenJ‎, 05-07-2013 01:05 AM
    • Replies: 1
    • Views: 2,327
    05-07-2013, 10:08 AM Go to last post
  27. What are the natures of a good moderating variable?

    nnnnnnnnnnnnnnnnnnnnn

    Started by Ilikespring‎, 05-06-2013 09:16 PM
    • Replies: 0
    • Views: 1,248
    05-06-2013, 09:16 PM Go to last post
  28. 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) *...

    Started by palex71‎, 05-06-2013 06:23 PM
    • Replies: 0
    • Views: 1,316
    05-06-2013, 06:23 PM Go to last post
  29. 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...

    Started by LukasVO‎, 05-06-2013 03:54 AM
    • Replies: 7
    • Views: 1,522
    05-06-2013, 05:51 PM Go to last post
  30. 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...

    Started by Anchyboom‎, 05-06-2013 12:43 PM
    • Replies: 3
    • Views: 3,129
    05-06-2013, 03:49 PM Go to last post
  31. 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...

    Started by PedroR‎, 04-27-2013 10:11 AM
    • Replies: 12
    • Views: 20,788
    05-06-2013, 01:46 PM Go to last post
  32. 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...

    Started by rmittal‎, 05-03-2013 04:35 PM
    • Replies: 7
    • Views: 3,371
    05-06-2013, 01:29 PM Go to last post
  33. 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...

    Started by crazyfrogspb‎, 05-03-2013 08:57 AM
    • Replies: 5
    • Views: 1,912
    05-06-2013, 12:08 PM Go to last post
  34. 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...

    Started by Denniono‎, 05-06-2013 04:39 AM
    exchange rates, regression, time
    • Replies: 0
    • Views: 768
    05-06-2013, 04:39 AM Go to last post
  35. Angry Modelling a variable

    Hi everybody, my problem is a variable (age) that I wish to enter into linear regression - but, the variable is not linear. So, I want to model...

    Started by GermanGirl‎, 05-03-2013 05:37 AM
    • Replies: 14
    • Views: 2,473
    05-05-2013, 03:53 PM Go to last post
  36. 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)...

    Started by noetsi‎, 05-02-2013 01:08 PM
    • Replies: 1
    • Views: 984
    05-05-2013, 06:47 AM Go to last post
  37. 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

    Started by JVIC‎, 05-03-2013 12:36 AM
    • Replies: 5
    • Views: 1,492
    05-03-2013, 08:05 AM Go to last post
  38. Unhappy Questions on simple linear regression

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

    Started by M!ss Moon‎, 05-03-2013 06:15 AM
    • Replies: 0
    • Views: 871
    05-03-2013, 06:15 AM Go to last post
  39. Red face 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 +...

    Started by JenJ‎, 04-30-2013 10:15 AM
    • Replies: 1
    • Views: 1,240
    05-03-2013, 05:51 AM Go to last post
  40. 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...

    Started by noetsi‎, 05-02-2013 11:48 AM
    • Replies: 3
    • Views: 1,992
    05-02-2013, 01:00 PM Go to last post
  41. Significant categorical variable as predictor in binary logistic regression

    Hi all, If you could help with this, it would be SO appreciated. I have a model in which I am predicting a dichotomous variable. The predictors are...

    Started by dpfaff‎, 04-30-2013 09:24 PM
    • Replies: 2
    • Views: 2,591
    05-01-2013, 12:03 PM Go to last post
  42. 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,...

    Started by prsbrs‎, 04-30-2013 04:27 PM
    • Replies: 0
    • Views: 4,093
    04-30-2013, 04:27 PM Go to last post
  43. 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...

    Started by wafi‎, 04-30-2013 01:01 PM
    • Replies: 2
    • Views: 3,232
    04-30-2013, 03:47 PM Go to last post
  44. 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...

    Started by TheK90‎, 04-25-2013 05:34 PM
    • Replies: 10
    • Views: 2,082
    04-30-2013, 11:26 AM Go to last post
  45. 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...

    Started by Marvin85‎, 04-17-2013 09:48 AM
    2 Pages
    1 2
    interaction effect, logistic, suppressor effect
    • Replies: 19
    • Views: 5,802
    04-30-2013, 10:28 AM Go to last post
  46. 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...

    Started by prsbrs‎, 04-29-2013 06:25 PM
    • Replies: 0
    • Views: 1,823
    04-29-2013, 06:25 PM Go to last post
  47. 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...

    Started by noetsi‎, 04-15-2013 12:30 PM
    • Replies: 13
    • Views: 6,700
    04-29-2013, 03:51 PM Go to last post
  48. 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...

    Started by helenekuo‎, 04-28-2013 07:47 AM
    linear, regression
    • Replies: 4
    • Views: 3,396
    04-29-2013, 02:26 PM Go to last post
  49. 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...

    Started by danvik‎, 04-29-2013 05:36 AM
    • Replies: 0
    • Views: 1,046
    04-29-2013, 05:36 AM Go to last post
  50. 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...

    Started by theboss‎, 04-29-2013 04:07 AM
    • Replies: 0
    • Views: 1,632
    04-29-2013, 04:07 AM Go to last post
  51. 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...

    Started by Rankor‎, 04-28-2013 07:05 PM
    baseball, regression, stata
    • Replies: 0
    • Views: 2,136
    04-28-2013, 07:05 PM Go to last post
  52. 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...

    Started by pickslides‎, 04-28-2013 05:17 PM
    • Replies: 0
    • Views: 1,389
    04-28-2013, 05:17 PM Go to last post
  53. 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...

    Started by helenekuo‎, 04-28-2013 07:45 AM
    quadratic, regression
    • Replies: 0
    • Views: 1,554
    04-28-2013, 07:45 AM Go to last post
  54. 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...

    Started by specos‎, 04-28-2013 05:22 AM
    • Replies: 1
    • Views: 1,209
    04-28-2013, 06:19 AM Go to last post
  55. 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...

    Started by Alexia‎, 04-27-2013 02:20 PM
    • Replies: 1
    • Views: 1,471
    04-27-2013, 04:31 PM Go to last post
  56. Software for sensivity analysis

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

    Started by kiaaadam‎, 04-26-2013 01:52 PM
    • Replies: 3
    • Views: 1,550
    04-26-2013, 06:39 PM Go to last post
  57. 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...

    Started by Blain Waan‎, 04-25-2013 10:17 PM
    gee, multivariate analysis, multivariate logistic reg, multivariate regression
    • Replies: 4
    • Views: 2,333
    04-26-2013, 10:56 AM Go to last post
  58. 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...

    Started by SonofDrogo‎, 04-26-2013 08:44 AM
    binary, categorical predictors, interaction, logistic regression, spss
    • Replies: 2
    • Views: 2,309
    04-26-2013, 10:38 AM Go to last post
  59. 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...

    Started by loops22‎, 04-26-2013 04:10 AM
    • Replies: 0
    • Views: 2,842
    04-26-2013, 04:10 AM Go to last post
  60. 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...

    Started by ilaria‎, 04-25-2013 11:53 AM
    • Replies: 1
    • Views: 3,061
    04-25-2013, 12:29 PM Go to last post

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