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Threads 4321 to 4361 of 4361

Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Weightings Problem

    I have been given an EXCEL model and my assigned task is (only) to fix it for problems that I might call "unintended consequences" of the underlying...

    Started by deanalt‎, 07-16-2007 09:32 PM
    • Replies: 4
    • Views: 3,085
    07-19-2007, 02:33 PM Go to last post
  2. Interactions in regression analysis

    Is their anyone who knows how to identify interactions between independent variables in a regression analysis? How does one use the output...

    Started by firefly‎, 06-08-2007 08:30 AM
    • Replies: 5
    • Views: 5,206
    06-09-2007, 09:42 PM Go to last post
  3. Need my answers checked.. Am I right? Fingers crossed : )

    Hey everyone, tomororw morning I am doing a statisctics exam but I had a few questions before I go in there. I have been reviewing the slides from...

    Started by crunchy‎, 05-15-2007 06:00 PM
    • Replies: 0
    • Views: 2,276
    05-15-2007, 06:00 PM Go to last post
  4. Regression Analysis Non linear estimation using squares

    Hi, I have used Gompertz model to estimate an equation. I have followed these two sites they explain it all. ...

    Started by vladinator‎, 04-30-2007 03:01 AM
    • Replies: 1
    • Views: 3,455
    04-30-2007, 09:01 PM Go to last post
  5. Anova problems.........please help.thank you

    1.A study has been conducted to determine whether the mean spending for recreational activities during the month of August differs for residents of...

    Started by adeola1820‎, 04-23-2007 12:20 AM
    • Replies: 0
    • Views: 3,941
    04-23-2007, 12:20 AM Go to last post
  6. Ancova

    Hello, I'm trying to compare regression models of the same form between three groups. Each model has two continuous independent variables. I need...

    Started by gysr‎, 04-17-2007 09:23 AM
    • Replies: 0
    • Views: 2,290
    04-17-2007, 09:23 AM Go to last post
  7. Mutliple Regression with a known coefficient

    I'm performing multiple regression on a linear model with several independent variables to generate equations such as: W = aX + bY + cZ X = dW +...

    Started by lfalin‎, 02-05-2007 08:26 AM
    • Replies: 1
    • Views: 4,179
    02-05-2007, 05:27 PM Go to last post
  8. Interaction variable in regression

    I'm analyzing data from an experiment in which there are two groups of subjects (patients and controls), and in each group the independent variable...

    Started by rak128‎, 01-31-2007 02:28 PM
    • Replies: 0
    • Views: 2,996
    01-31-2007, 02:28 PM Go to last post
  9. How to develop a regression expression using factor scores?

    Hi, I have four factors for fourteen variables. I want to develop a regression expression for a dependent variable using the correlated variables....

    Started by aceprod51‎, 01-21-2007 03:22 PM
    • Replies: 1
    • Views: 4,292
    01-23-2007, 10:05 PM Go to last post
  10. Doing logistic regression using epi-info

    Hi there! I'd really appreciate help with this one. I'm finding the prevalence of anemia and its determinants. There are about 23 factors that...

    Started by confusedmedstudent‎, 12-10-2006 05:01 AM
    • Replies: 0
    • Views: 7,005
    12-10-2006, 05:01 AM Go to last post
  11. dummy coding help for cat variables

    I have a questionnaire with 28 items - 20 items are Likert attitude questions. In fact there are 5 main variables (constructs?) being measured by 4...

    Started by ehb23‎, 12-06-2006 07:26 PM
    • Replies: 0
    • Views: 4,403
    12-06-2006, 07:26 PM Go to last post
  12. Help with prediction interval problem

    Construct the indicated prediction interval for an individual y. The equation of the regression line for the paired data below is = 3x and the...

    Started by maharriso‎, 11-13-2006 02:50 PM
    • Replies: 0
    • Views: 7,889
    11-13-2006, 02:50 PM Go to last post
  13. Multiple Regression Analysis

    Hi there, i would need some advice with regards to Multiple regression. Hopefully i have done the analysis in SPSS correctly. I would like to...

    Started by cookies8‎, 10-08-2006 04:08 AM
    • Replies: 1
    • Views: 3,703
    10-08-2006, 05:46 PM Go to last post
  14. Need help selecting statistical test

    I am working on my dissertation proposal and have run into a snag in the analyses section. I am trying to analyze data drawn from two time-points. ...

    Started by psychstudent‎, 09-28-2006 05:47 PM
    • Replies: 2
    • Views: 2,650
    09-29-2006, 02:27 PM Go to last post
  15. Multiple regression help needed

    I am struggling with the concept of a forced entry linear multiple data regression. Could someone please explain what they are, why they are used,...

    Started by southerngirl920‎, 09-05-2006 04:03 PM
    • Replies: 1
    • Views: 6,435
    09-05-2006, 08:27 PM Go to last post
  16. Question Multiple Regression - Interpreting t-stat

    Hi all, If the model fit is satisfactory (ie. R-squared value is sufficiently high), how should the t-stat be interpreted... my reading indicated...

    Started by big-b‎, 08-28-2006 12:22 AM
    • Replies: 1
    • Views: 106,687
    08-29-2006, 01:56 PM Go to last post
  17. My regression has me confused!

    Can someone help me explain this? I did a stepwise multiple regression using the three factors. In Step 3, it shows the Bs in the order I...

    Started by Mcnuggets‎, 08-27-2006 12:49 PM
    • Replies: 2
    • Views: 3,847
    08-29-2006, 09:22 AM Go to last post
  18. Durbin watson

    :confused: :confused: i'm in a big big problem? i'm a demonestrator in medical statistics department this week i have to prepare a seminar about...

    Started by Ghada‎, 08-27-2006 03:34 AM
    • Replies: 0
    • Views: 4,031
    08-27-2006, 03:34 AM Go to last post
  19. Question Linear Regression Equation

    Dear friends, I have a set of data as follows: 1....... 58.823.23 10....... 62.57.90 50....... 87.232.33 100....... 110.2910.33...

    Started by pavnesh‎, 07-27-2006 05:43 AM
    • Replies: 5
    • Views: 4,405
    08-11-2006, 12:24 AM Go to last post
  20. regression, pairs of random variables

    with observations of an x variable, and a y variable whose expected values lie on a straight line, and whose residual errors are normally...

    Started by lhomer‎, 08-06-2006 12:25 PM
    • Replies: 0
    • Views: 3,519
    08-06-2006, 12:25 PM Go to last post
  21. Plz Help!!!!!!!!!!!!!!!!!!!:(

    HEY GUZ CAN U PLZ HELP ME ON THSES @ PROBLEMS< PLZZZ. 1. Please derive solution of parameter estimation for Multiple Linear Regression Model....

    Started by kal‎, 06-11-2006 07:41 PM
    • Replies: 0
    • Views: 2,691
    06-11-2006, 07:41 PM Go to last post
  22. How do I estimate sales given a multiple regression?

    Hi, I'm doing a problem that involves multiple regression. The question asks me to make an estimate of future sales for 15 stores for 2004, given a...

    Started by Emawk‎, 06-05-2006 06:29 PM
    • Replies: 0
    • Views: 3,023
    06-05-2006, 06:29 PM Go to last post
  23. Multiple regression least square estimation

    Can someone show me the equations and the derivation of the least square estimation of multiple linear regression? It would be even greater if...

    Started by byip‎, 05-20-2006 11:44 AM
    • Replies: 0
    • Views: 4,039
    05-20-2006, 11:44 AM Go to last post
  24. Pooling data for multiple regression

    Hi All, :wave: I have a few issues with some collected data. I have been collecting attitude/perception questionaires using likert scales...

    Started by funkymunky‎, 05-12-2006 01:13 PM
    • Replies: 2
    • Views: 6,513
    05-13-2006, 08:43 AM Go to last post
  25. Unsure of which test to use!

    If I want to assess the effects of a number of different factors such as sex, income etc on exam results which statistical test should I use? I have...

    Started by jagsman‎, 05-04-2006 08:01 PM
    • Replies: 4
    • Views: 2,633
    05-06-2006, 01:42 PM Go to last post
  26. 2SLS - endogeneity issue

    I am running a regression on the relationship between aid inflows and investment levels in developing countries. One obvious other explanatory...

    Started by Alex E‎, 05-01-2006 09:37 AM
    • Replies: 1
    • Views: 3,635
    05-06-2006, 01:40 PM Go to last post
  27. MLR: R2 and RMSE in assessing quality

    How would one judge the quality of a multiple linear regression model if the model had a high value for cross-validated R2 but also a high value for...

    Started by Grateful‎, 04-26-2006 06:35 PM
    • Replies: 1
    • Views: 6,287
    04-26-2006, 08:00 PM Go to last post
  28. Need help with regression statistics analysis

    Hello I need serious help. I did my last project fine. I've followed all my instructions for this final project, and did everything, but the part to...

    Started by HeavenSoldier‎, 04-04-2006 01:46 PM
    2 Pages
    1 2
    • Replies: 20
    • Views: 7,718
    04-19-2006, 10:20 PM Go to last post
  29. Multiple regression?

    Hi, I'm wondering if it is a bad violation to try to conduct a multiple regression analysis if some of the variables are non-parametric? My...

    Started by Mimi Le Rue‎, 04-11-2006 11:00 AM
    • Replies: 4
    • Views: 4,205
    04-13-2006, 09:59 AM Go to last post
  30. Help with easy stats

    Hi guys I desperately need help revising for my STATS module. We have been given practice exam questions but are not given the answers so I can't...

    Started by borgmeister‎, 04-01-2006 05:52 PM
    • Replies: 0
    • Views: 2,833
    04-01-2006, 05:52 PM Go to last post
  31. Question Need help on deciding the analysis tests

    Hello every one, I am doing research in social science. i have following issue for which I need advise: 1. My sample is a snowball sample and...

    Started by amjadyunus‎, 03-09-2006 03:44 PM
    • Replies: 3
    • Views: 3,013
    03-16-2006, 08:43 AM Go to last post
  32. Improving an estimate of a mean value

    Hello, I have a dataset that has 10 independent descriptors and one dependent statistic, b. Only a few of the descriptors are quantitative and...

    Started by FailedStats101‎, 02-28-2006 08:19 AM
    • Replies: 3
    • Views: 3,307
    02-28-2006, 11:35 PM Go to last post
  33. Multiple Regression Question

    Hello, I have a question about multiple regression. My project involves non-political group involvement predicting political participation. My...

    Started by nadia‎, 02-20-2006 07:17 PM
    • Replies: 5
    • Views: 4,224
    02-21-2006, 08:37 PM Go to last post
  34. Data pooling and regression analysis

    Dear All I have a question about data pooling and regression analysis, i have tried to read some basic statistic book, but still not answering my...

    Started by mchoud‎, 02-21-2006 10:48 AM
    • Replies: 4
    • Views: 5,543
    02-21-2006, 12:15 PM Go to last post
  35. Multiple regression vs partial correlation

    I have another question. I have only 40 patients and 5 domains (or factors) made of 16 (questionnaire) items. In order to get correlation...

    Started by Susanbwh‎, 02-14-2006 09:06 AM
    • Replies: 1
    • Views: 7,036
    02-14-2006, 09:27 AM Go to last post
  36. Math quiz gone horribly wrong...HELP!!!

    I have a math quiz that I did so horrible on that the teacher gave me points for getting my name and the date right out of pity. I was so far off on...

    Started by orangeb‎, 02-08-2006 09:07 AM
    • Replies: 0
    • Views: 2,988
    02-08-2006, 09:07 AM Go to last post
  37. need help with regression problem asap!

    I have to do this problem but I have no idea how to interpret the data! Can somebody pleeeeeeeeeease help me?:wave: An object is thrown upward from...

    Started by pinkmari23‎, 12-06-2005 05:14 PM
    • Replies: 6
    • Views: 3,807
    12-13-2005, 12:26 PM Go to last post
  38. Regression vs ANOVA

    How would you determine whether to use ANOVA or multiple regression? What about the data or the situation of a research topic would be the deciding...

    Started by Diane‎, 11-25-2005 07:48 PM
    • Replies: 1
    • Views: 18,522
    11-25-2005, 08:41 PM Go to last post
  39. Another question about regression

    First, thank you to John and Quark for responding to my question about multiple regression!!!! I have another question. I am using SPSS and...

    Started by Diane‎, 11-20-2005 12:17 PM
    • Replies: 1
    • Views: 3,795
    11-20-2005, 12:25 PM Go to last post
  40. confidence and prediction interval

    Let's say I have the following data: y: 19.695 77.310 138.938 16.382 36.249 111.078 9.497 61.270 42.804 52.931 x: 4.0860 8.6203 11.6592 3.6581...

    Started by macro90‎, 10-20-2005 02:58 AM
    • Replies: 1
    • Views: 9,857
    10-20-2005, 08:13 AM Go to last post
  41. who can help me with multiple regression analysis???

    I've calc correlation coefficients between several variables. The results are very promissing, since showing high correlation. The multiple...

    Started by PEIM‎, 09-19-2005 04:29 PM
    • Replies: 1
    • Views: 3,479
    09-19-2005, 06:44 PM Go to last post

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