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Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. multiple regression analysis

    Hi There, I am conducting multiple regression analyses using SPSS. I have an outcome variable and several potential predictors, one of which is...

    Started by katypips‎, 02-02-2010 05:56 AM
    • Replies: 0
    • Views: 3,231
    02-02-2010, 05:56 AM Go to last post
  2. Geographically weighted regression (GWR)

    Hi, I am looking for some info on possibility of making a GW regression with a dependent variable as floating point numbers and independent...

    Started by Entomo‎, 02-02-2010 05:45 AM
    • Replies: 0
    • Views: 2,750
    02-02-2010, 05:45 AM Go to last post
  3. Should I transform my scores?

    I am using correlation scores as the dependent variable in a multiple regression e.g. I am looking at which personality factors predict how well...

    Started by Lizzie_Liz‎, 02-01-2010 06:29 AM
    • Replies: 0
    • Views: 2,954
    02-01-2010, 06:29 AM Go to last post
  4. multiple regression help

    Hi guys, I was reading the following example from a book, but couldn't understand a couple of things. Could you help me out here? Here is the...

    Started by beemzet‎, 01-21-2010 02:21 PM
    • Replies: 1
    • Views: 2,287
    01-22-2010, 02:50 PM Go to last post
  5. Manually calculating weights for WLS

    *Posted in Stat Consulting but moved here b/c I think it's more fitting. Hi guys, I'm trying to figure out how to manually calculate the...

    Started by brett45‎, 01-13-2010 03:21 PM
    • Replies: 0
    • Views: 4,419
    01-13-2010, 03:21 PM Go to last post
  6. What is the history of regression analysis?

    Hi all, Recently, I am using regression analysis to do a geophysics study. Now the study is almost done. I start to write my report. I want to add...

    Started by ygao‎, 01-11-2010 04:40 PM
    • Replies: 4
    • Views: 12,237
    01-12-2010, 12:22 PM Go to last post
  7. independent variable that is a distribution?

    Hi, I am attempting a logistic regression analysis with a binary response and explanatory variables measured at the individual level and also some...

    Started by seth‎, 01-10-2010 04:10 AM
    • Replies: 0
    • Views: 2,637
    01-10-2010, 04:10 AM Go to last post
  8. Physiology grad student needing some help - linear regression through the origin

    Hi all. I'm a PhD student in physiology, and I seem to be suffering from mild amnesia when it comes to statistics. My old course notes are out of my...

    Started by Pascal‎, 01-04-2010 09:45 AM
    • Replies: 6
    • Views: 4,303
    01-06-2010, 04:43 AM Go to last post
  9. Errors vs Residuasl in linear regression

    Hello, As far as i know in regression analysis the errors have all the same constant variance. On the other hand the residuals of the sameple that...

    Started by zarasandreas‎, 12-28-2009 03:03 PM
    • Replies: 0
    • Views: 1,885
    12-28-2009, 03:03 PM Go to last post
  10. Regression or LSD for discrete quantitative factor?

    I have a 2-factor factorial experiment where Factor A is quantitative and continuous with 2 levels (100 and 200). Factor B is quantitative, but...

    Started by brownmoses‎, 12-28-2009 12:55 PM
    • Replies: 0
    • Views: 2,941
    12-28-2009, 12:55 PM Go to last post
  11. Question Multiple Regression Query

    Hi, I'm an undergraduate psych student and have conducted a multiple regression for an assignment. This might seem like a simple question, but am a...

    Started by rach1234xx‎, 12-17-2009 12:12 PM
    • Replies: 1
    • Views: 2,209
    12-26-2009, 10:58 PM Go to last post
  12. Question Totally lost with regression equations

    Hi I have a dataset of 182 countries and I have to compare them with respect to GDP, energy consumption and Carbon dioxide emissions. How can I...

    Started by shah.manasi‎, 12-10-2009 01:48 PM
    • Replies: 1
    • Views: 2,061
    12-23-2009, 12:16 AM Go to last post
  13. Cool Linear regression assumptions not met, now what?!

    Hi, I tried and tried but I could not meet the assumptions for linear regression (normal, linearity, independence, etc.). I have multiple...

    Started by Toulouse‎, 12-17-2009 07:32 PM
    • Replies: 5
    • Views: 13,670
    12-19-2009, 01:54 PM Go to last post
  14. NEED HELP on degrees of freedom!!!! URGENT

    Hello! I have finished my regression project and am writing my paper for a multiple regression model, but cannot seem to find in notes or online...

    Started by dshan‎, 12-15-2009 05:18 PM
    • Replies: 3
    • Views: 2,434
    12-15-2009, 06:17 PM Go to last post
  15. Need help - what model, what analysis?

    Hi all, please somebody help give me some direction... I have worked long and hard at trying to figure this out for days so please realize I'm not...

    Started by Empathy‎, 12-14-2009 04:53 PM
    • Replies: 1
    • Views: 2,254
    12-14-2009, 05:00 PM Go to last post
  16. What means "1/X weighted multiple regression"

    What means 1/X weighted multiple regression? Is it just WLS with weights = "1/X" or I'm missing smth? :confused:

    Started by alex84‎, 12-11-2009 09:17 PM
    • Replies: 1
    • Views: 4,617
    12-12-2009, 01:42 PM Go to last post
  17. Standard error of multiple regression coefficients

    I was revising my undergraduate courses of Statistics which I took before 20 years. I was exercising how to construct ANOVA table for a regression...

    Started by davidbinyam‎, 05-29-2008 11:13 AM
    • Replies: 14
    • Views: 34,325
    12-11-2009, 07:49 PM Go to last post
  18. confusion about Ho/Ha hypothesis for simple/multiple regression

    The one thing I do not understand (and my book doesn't explain) is how do you determine if it's Ha > 0, Ha < 0 or Ha =/= 0? Anyone can shed some...

    Started by Parad0x‎, 12-04-2009 01:02 PM
    • Replies: 2
    • Views: 9,286
    12-08-2009, 08:14 PM Go to last post
  19. Teaching multivariate statistics: text & software recommendations

    Hello all, I'll be leading an introductory seminar to multivariate statistics in the spring and was looking for recommendations for texts that...

    Started by jwallin‎, 12-06-2009 07:20 PM
    • Replies: 3
    • Views: 4,371
    12-08-2009, 09:54 AM Go to last post
  20. Chi square as sneak peek into logistic regression

    Let's say I have these variables... Dependent var: cancelled_flag Independent vars: region, gender, etc My ultimate goal is to do a logistic...

    Started by jawon‎, 12-03-2009 07:12 PM
    • Replies: 1
    • Views: 4,418
    12-05-2009, 08:23 PM Go to last post
  21. multiple regression and adjusted r-squ

    Hi there, I just found this forum in a fit of frustration and angst... Anyway, I'm running a multiple linear regression in SAS for a final...

    Started by smurf‎, 12-05-2009 01:31 PM
    • Replies: 0
    • Views: 2,498
    12-05-2009, 01:31 PM Go to last post
  22. multivariate multiple regression

    Hello all: I'm working on a multivariate multiple regression analysis in SAS. I have 3 response variables and 2 independent variables. When...

    Started by jamesmartinn‎, 12-03-2009 06:58 PM
    • Replies: 0
    • Views: 4,450
    12-03-2009, 06:58 PM Go to last post
  23. very quick question about the 'intercept'

    If I am asked to state the intercept which one do I quote? Estimate, Std error, t value or Pr(>|t|) ? (If it makes any difference I am doing a...

    Started by misc763‎, 12-03-2009 03:47 PM
    • Replies: 4
    • Views: 3,776
    12-03-2009, 04:47 PM Go to last post
  24. Linear Regression

    Hi, I have a dataset which contains a long list of variables (categorical eg. gender, zipcode group etc and continuous eg. income, home value etc)...

    Started by blueycool‎, 12-01-2009 11:19 AM
    • Replies: 0
    • Views: 2,042
    12-01-2009, 11:19 AM Go to last post
  25. Multiple regression

    I am a bit confused with multiple regression. I understand every predictor will lead to different Y values and will create different linear lines...

    Started by jamie10‎, 11-30-2009 05:44 AM
    • Replies: 0
    • Views: 2,088
    11-30-2009, 05:44 AM Go to last post
  26. Hpw to Determine the Hypotheses for a T-test Study?

    delete thread mods please. thanks.

    Started by SoLost‎, 11-28-2009 04:13 AM
    • Replies: 4
    • Views: 4,488
    11-29-2009, 12:04 AM Go to last post
  27. Nonparametric multiple regression

    I want to know how to conduct the nonparametric equivalent of a multiple regression? I have 3 variables that are correlated according to spearman's...

    Started by marinelizard‎, 11-27-2009 06:26 PM
    • Replies: 0
    • Views: 3,177
    11-27-2009, 06:26 PM Go to last post
  28. have a .por file, no spss, need to run analysis by tomorrow

    Hi all.. I thought I could open the .por file I have on my home computer but it turns out the version I have doesn't open a file like this with more...

    Started by Empathy‎, 11-23-2009 09:13 PM
    • Replies: 0
    • Views: 3,774
    11-23-2009, 09:13 PM Go to last post
  29. Analysis of data set derived from simulation

    I'm an engineer working for an architecture firm, and I'm currently trying to analyze some data I've derived from a parametric building simulation I...

    Started by jeemang‎, 11-19-2009 06:50 PM
    • Replies: 0
    • Views: 1,942
    11-19-2009, 06:50 PM Go to last post
  30. Multiple Regression Help

    Hi, I'm currently working on an assignment in which I have to run a multiple regression, however I am a little confused regarding the order of the...

    Started by boogers‎, 11-12-2009 05:20 PM
    • Replies: 1
    • Views: 2,210
    11-13-2009, 08:02 AM Go to last post
  31. Exclamation Problem interpreting Multiple Regression on Video Game Sales

    Hi everyone, I am a new member, I am so glad to have found the forum. I'm tearing my hair out about this problem. These are my results: ...

    Started by aplfalcon‎, 11-09-2009 10:17 PM
    • Replies: 3
    • Views: 5,257
    11-11-2009, 04:28 PM Go to last post
  32. How many IVs can I use?

    I am hoping to publish the results of this in a journal (not a statistics one, an experimental science one). I have a sample size of 71...

    Started by BrenH‎, 11-05-2009 01:00 AM
    • Replies: 2
    • Views: 3,006
    11-11-2009, 04:08 PM Go to last post
  33. using prediction results in a separate model

    hello! I'm looking for some feedback on an idea, if you're interested. The issue at hand is how to deal with the variable "age" as a predictor of...

    Started by phoebe‎, 11-05-2009 04:20 PM
    • Replies: 1
    • Views: 2,218
    11-07-2009, 05:48 PM Go to last post
  34. Multiple Regression Interaction

    Figured it out, thanks!

    Started by jamesmartinn‎, 11-05-2009 02:54 PM
    • Replies: 0
    • Views: 2,585
    11-05-2009, 02:54 PM Go to last post
  35. Post ANCOVA controversy?

    Hello all, I have a question regarding ANCOVA, which seems straightforward, however an answer has eluded me. The question is: Can a...

    Started by jhdc‎, 10-31-2009 04:43 PM
    • Replies: 3
    • Views: 12,065
    11-03-2009, 08:30 PM Go to last post
  36. Standard Error of Coefficients in Multiple Regression

    Hi, I have built a model in Excel to do Multiple Regression. I am able to correctly calculate the intercept and the regression coefficients but I...

    Started by JoeA838‎, 10-26-2009 02:08 PM
    • Replies: 1
    • Views: 13,995
    10-26-2009, 02:49 PM Go to last post
  37. Logistic regression null values

    I think I know the answer, but just confirming. I'm doing a multiple logistic regression with 15 predictor variables. Must ALL values of the...

    Started by jawon‎, 10-21-2009 05:30 PM
    • Replies: 0
    • Views: 3,848
    10-21-2009, 05:30 PM Go to last post
  38. scale issues

    Please look at the following descriptive labels for a scale of importance. Extremely critical (7) Highly important (6) Very Important (5) ...

    Started by Dr.Appalayya‎, 10-17-2009 04:53 AM
    • Replies: 4
    • Views: 2,605
    10-19-2009, 08:11 AM Go to last post
  39. Latent growth process

    Hi, I'm starting a study investigating the use of several medical imaging measurements taken pre-treatment to predict treatment outcome. Treatment...

    Started by parkej‎, 10-15-2009 03:51 PM
    • Replies: 0
    • Views: 1,581
    10-15-2009, 03:51 PM Go to last post
  40. Time-series analysis with three variables

    :wave:I have some time-series across three variables. I want to see the association of two variables while controlling for a third. I am using SPSS...

    Started by jimd@uic.edu‎, 10-13-2009 08:26 AM
    • Replies: 0
    • Views: 3,481
    10-13-2009, 08:26 AM Go to last post
  41. Linear regression analysis - Urgent assistance required

    Hi I am trying to examine the relation between ad. liking and attitude towards the brand. My hypothesis H1: "Commercials that are liked will...

    Started by bulu‎, 10-09-2009 06:14 PM
    • Replies: 6
    • Views: 4,837
    10-11-2009, 04:10 AM Go to last post
  42. Question what is: correlation? regression? confidence?

    I need to learn statistics for a project I'm working on. I am totally lost and am spending more time than I thought I would on trying to understand...

    Started by brad henrie‎, 10-08-2009 08:38 PM
    • Replies: 1
    • Views: 4,767
    10-09-2009, 03:40 AM Go to last post
  43. Beta coefficients in multiple regression

    Hi guys. I have a question about beta coefficients that are calculated for standard multiple linear regression procedure. I kind of don't...

    Started by kobylkinks‎, 01-30-2009 04:02 AM
    • Replies: 4
    • Views: 21,761
    10-06-2009, 09:35 AM Go to last post
  44. Question Classification Rate of Multivariate Logistic Regression

    Hello, I'm running a binary (2 groups), multivariate (multiple predictors) logistic regression analysis, and would like to test the classification...

    Started by eyeballjunk‎, 09-28-2009 09:10 AM
    • Replies: 1
    • Views: 5,026
    09-29-2009, 03:01 PM Go to last post
  45. How do I do this calculation

    Hi all, I am a mature student and just dont get how to do what most around me take as simple calculations This is from a coefficients table where...

    Started by kay2000‎, 09-20-2009 08:40 PM
    • Replies: 1
    • Views: 2,416
    09-20-2009, 09:14 PM Go to last post
  46. Error estimates with r2 in linear regression

    I have been given the results of some regression analysis, where some variable y is a function of x1 and x2. I have a r2 value for the analysis, and...

    Started by mh8782‎, 09-18-2009 04:29 AM
    • Replies: 2
    • Views: 3,052
    09-18-2009, 09:44 AM Go to last post
  47. Can I use mediation with my data?

    Thanks for taking the time to read this in advance it is quite detailed, but I'm currently working on my psychology honours dissertation, and due to...

    Started by kristy008‎, 09-12-2009 10:08 PM
    • Replies: 2
    • Views: 3,384
    09-13-2009, 01:27 AM Go to last post
  48. predicting X using multiple regression?

    Hello: I have been reviewing a study in which Multiple Linear Regression (MLR) was used to evaluate the relationship between the concentration of...

    Started by AquaMan‎, 09-11-2009 04:56 PM
    • Replies: 0
    • Views: 2,057
    09-11-2009, 04:56 PM Go to last post
  49. I need to understand regression analysis. Please Help

    Hi guys i need help badly. We were given this to solve in my first RA class and i have no idea how to begin. Please this is the first time i'm...

    Started by henryneo‎, 09-01-2009 10:07 AM
    • Replies: 2
    • Views: 3,192
    09-06-2009, 09:00 PM Go to last post
  50. mahalanobis distance critical values > 10 df

    dear all, analysing my dataset (N=1056) with SPSS for my Ph.D., I'm currently testing with linear multiple regression. before entering a...

    Started by hbos‎, 09-03-2009 09:58 AM
    • Replies: 0
    • Views: 10,839
    09-03-2009, 09:58 AM Go to last post
  51. help with interpretation of multiple regression results

    Dear forum members, I am running multiple regressions with SPSS and I need help with possible interpretation of my results. Firm...

    Started by metanex‎, 09-03-2009 02:19 AM
    • Replies: 0
    • Views: 3,425
    09-03-2009, 02:19 AM Go to last post
  52. Moderation graphs

    Hi all, (I hope I'm posting this in the right sub-forum) I have two data sets for which I've done hierarchical regression analysis to test for...

    Started by darc‎, 09-02-2009 06:10 AM
    • Replies: 0
    • Views: 13,168
    09-02-2009, 06:10 AM Go to last post
  53. Problem with small amount of cases

    Hi New here, and fairly new with statistics. I have a problem with too few cases, but more than enough variables and observations. I have no...

    Started by Cai‎, 08-16-2009 11:47 AM
    • Replies: 5
    • Views: 2,451
    08-19-2009, 12:09 PM Go to last post
  54. Using Regression When Y = # Wins

    Hello, This is my first post, and so I apologize if this is a dumb question. I'm considering using multiple linear regression to predict Y = #...

    Started by GaryB‎, 08-18-2009 01:01 AM
    • Replies: 2
    • Views: 2,409
    08-18-2009, 04:43 PM Go to last post
  55. Dependent / conditional regression?

    Hi there! Long time lurker, first time poster (first post in ANY board), so my sincerest apologies if I'm doing anything wrong! I have searched...

    Started by Murphy-dk‎, 08-11-2009 05:23 AM
    • Replies: 0
    • Views: 2,031
    08-11-2009, 05:23 AM Go to last post
  56. relationship between test conditions and time to failure using linear regression

    Hello all, I'm Tom and i've decided it'd be a good idea to join this forum as i'm just about to start my third year of my degree in september; a Beng...

    Started by t0mmm‎, 08-04-2009 06:39 AM
    • Replies: 0
    • Views: 1,681
    08-04-2009, 06:39 AM Go to last post
  57. Smile Nonparametric multivariate survey analysis - suggestions please!

    Hi I'm about to start analysis on some educational survey data with the following predictor and response variables: PREDICTOR: age class (2...

    Started by Tabs‎, 08-01-2009 03:28 PM
    • Replies: 2
    • Views: 2,220
    08-02-2009, 04:27 PM Go to last post
  58. Which test to use?

    I have just learned that I chose the wrong test for my data and I am now at a total loss. Basically I sent out a questionnaire which had a likert...

    Started by 2461c‎, 07-28-2009 10:31 AM
    • Replies: 3
    • Views: 2,345
    08-01-2009, 02:44 AM Go to last post
  59. Wink Regression/Time Series

    Hello All:wave: I am looking for research help:yup: There is a data set and the goal is to build a model. There are events that happen....

    Started by iknowu99‎, 03-18-2009 03:55 PM
    • Replies: 11
    • Views: 5,275
    07-30-2009, 03:28 PM Go to last post
  60. Calculating Omega Squared

    Hi All I have been battling with my stats over the last two months and have managed, by reading books and researching the web, to stumble through...

    Started by 2461c‎, 07-26-2009 06:30 AM
    • Replies: 2
    • Views: 25,927
    07-28-2009, 10:25 AM Go to last post

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