1. Announcement:
    Search functionality giving errors
    Dason ‎(Devorador de queso)
    05-07-2017
    Views:
    3,182
+ Post New Thread
Page 70 of 72 FirstFirst ... 20 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 LastLast
Threads 4141 to 4200 of 4309

Forum: Regression Analysis

Linear regression, linear models, nonlinear regression

  1. Validity of setting constant to zero

    Can anyone tell me the validity of setting the constant term to zero to make the other coefficients pass significance? For example, I have been...

    Started by craigpollard‎, 05-06-2009 01:31 AM
    • Replies: 0
    • Views: 2,095
    05-06-2009, 01:31 AM Go to last post
  2. Poisson regression with interactions

    I am investigating the risk of getting different forms of leukemia if you live near a hazardous waste site in New York state. I am working with PROC...

    Started by bobban‎, 05-05-2009 04:53 PM
    • Replies: 0
    • Views: 3,528
    05-05-2009, 04:53 PM Go to last post
  3. Independent variable kurtosis in multiple regression...

    One of my independent variables 'Age' has 10 categories of ages, each with an equal number of individuals. What do I need to do to this to make it...

    Started by Labtec‎, 05-03-2009 11:35 AM
    • Replies: 1
    • Views: 2,592
    05-03-2009, 06:02 PM Go to last post
  4. Dependent variable kurtosis

    How important is it for the Dependent Variable in a multiple regression to show normal distribution? I have read apparently contradictory...

    Started by Labtec‎, 05-03-2009 07:22 AM
    • Replies: 2
    • Views: 3,092
    05-03-2009, 06:01 PM Go to last post
  5. Linear Regression Model Help

    Hi, I don't really understand how I go about this problem. I understand regression but I need a little help here. Question: Reaction time to a...

    Started by alan4cult‎, 03-06-2009 05:51 PM
    • Replies: 2
    • Views: 2,085
    04-29-2009, 09:36 PM Go to last post
  6. Urgent help, please...thanks . A.S.A.P

    Thanks admin for your ongoing feedback... I am facing this problem with the Leckert Scale...follows: data set to be collected - 5 points:...

    Started by alicccccc‎, 11-12-2008 10:01 PM
    • Replies: 3
    • Views: 2,453
    04-18-2009, 07:21 PM Go to last post
  7. PCA questions

    here goes... 1. The Kaiser-Meyer-Olkin Measure of Sampling Adequacy and Bartlett's Test of Sphericity tests are done on the standardised or the...

    Started by madhatter‎, 04-18-2009 03:47 AM
    • Replies: 0
    • Views: 3,609
    04-18-2009, 03:47 AM Go to last post
  8. Multiple Regression where DV is a proportion

    Hi. I am using multiple regression with 3 continuous predictor Variables, and the Dependent Variables is a proportion (0-1). I'm worrying quite a...

    Started by TheConglomerate‎, 04-13-2009 01:22 AM
    • Replies: 0
    • Views: 2,234
    04-13-2009, 01:22 AM Go to last post
  9. Thumbs down Linear Regression and Correlation Q - Need help!

    Home Size Selling Price Home Size Selling Price 1.4 100 1.3 110 1.3 110 ...

    Started by rochestergirlny‎, 04-09-2009 11:48 PM
    • Replies: 1
    • Views: 2,388
    04-10-2009, 02:39 AM Go to last post
  10. SPSS multiple regression????

    I want to do a multiple regression , correlating offspring produced on mating one with offspring produced on mating two also with male age at the...

    Started by marigold‎, 04-01-2009 07:24 AM
    • Replies: 0
    • Views: 2,749
    04-01-2009, 07:24 AM Go to last post
  11. Simple Questions

    ...and yet i'm stuck. 1) How would you represent the components of ANOVA of regression in a graphic format,when considering a bivariate...

    Started by jamesmartinn‎, 03-30-2009 11:58 AM
    • Replies: 0
    • Views: 2,013
    03-30-2009, 11:58 AM Go to last post
  12. Transformed Interactions in Regression

    Hi all, I have a quick (but surprisingly difficult) question to ask regarding transformed variables in an interaction term when conducting...

    Started by mandy_a41‎, 03-24-2009 10:33 PM
    • Replies: 3
    • Views: 3,846
    03-25-2009, 07:42 PM Go to last post
  13. Confidence Interval for Prediction in Weighted Regression

    Hi everyone, I'm currently writing my final year project in analytical chemistry, and have got to the stage of calculating confidence intervals...

    Started by skyllberg‎, 03-22-2009 12:39 PM
    • Replies: 0
    • Views: 4,969
    03-22-2009, 12:39 PM Go to last post
  14. Prediction interval behaviour close to the origin

    Hi I have a simple linear regression model, for which I have calculated the Confidence and Prediction Intervals. The model is fixed at the origin...

    Started by cyberbunny‎, 03-21-2009 07:30 AM
    • Replies: 0
    • Views: 2,501
    03-21-2009, 07:30 AM Go to last post
  15. Three way interactions in regression

    Hi, I'm trying to figure out how to do three-way interactions with multiple regression. I am trying to predict an IV by a three DVs and the...

    Started by sifar16‎, 08-28-2008 03:18 AM
    • Replies: 4
    • Views: 20,923
    03-20-2009, 11:49 PM Go to last post
  16. Weird interaction results - need someone's help!

    I ran some hierachical multiple regression in SPSS, and plotted my significant interactions (I have all continuous predictors and outcomes). One of...

    Started by asugrad‎, 03-20-2009 07:33 PM
    • Replies: 0
    • Views: 1,922
    03-20-2009, 07:33 PM Go to last post
  17. Question Regression for nominal variables?

    well, i'm interested if there is some kind of procedure, similar to multiple regression to calculate results for nominal variable with more than two...

    Started by Franz Dobermann‎, 03-10-2009 08:36 AM
    • Replies: 1
    • Views: 3,228
    03-12-2009, 05:47 PM Go to last post
  18. Adjusting survey data that is taken at diffrent timepoints

    Hi all, I am trying to analyze the differences between two groups in the result of a psychometric survey after they have been affected by a...

    Started by ilike‎, 03-09-2009 07:16 AM
    • Replies: 2
    • Views: 2,261
    03-10-2009, 07:51 AM Go to last post
  19. multiple regression - beta coefficient - beta above 1

    Hey, I have a problem concerning multiple regression analyses and the beta coefficient. I conducted a multiple regression analysis with two...

    Started by Torsten‎, 03-03-2009 10:22 AM
    • Replies: 1
    • Views: 10,767
    03-03-2009, 05:06 PM Go to last post
  20. Double check sample calculation from pilot study

    I am really a neophyte to statistics but am in the middle of a research project and would appreciate someone checking my calculations. I ran a...

    Started by lph2005‎, 02-23-2009 01:35 AM
    • Replies: 3
    • Views: 5,321
    03-01-2009, 09:28 PM Go to last post
  21. Linear Regression in Excel...

    Hello everyone ! If you don't mind, a question regarding linear regression in Excel. I will be having a an Intro to Statistics test in May and...

    Started by Fred‎, 02-26-2009 11:08 AM
    • Replies: 4
    • Views: 4,427
    02-26-2009, 11:57 AM Go to last post
  22. pearson correlation in linear mixed models?

    Hi, I'm trying to understand a research article that used linear mixed models, and I think they have done something wrong. Basically, the...

    Started by williaml‎, 02-24-2009 05:50 AM
    • Replies: 0
    • Views: 2,811
    02-24-2009, 05:50 AM Go to last post
  23. This simple linear regression isn't adding up..

    Edit/Cliffnotes: CORRECTION- The second SSR formula in question is SSR = SUM((yhat(i) - ybar)^2), not SSR = SUM((y(i) - ybar)^2). Dragan resolved my...

    Started by Math Adventures‎, 02-18-2009 08:40 PM
    • Replies: 2
    • Views: 3,903
    02-18-2009, 10:19 PM Go to last post
  24. three way interactions and centering in multiple regression

    Hello, I am examining three variables to see whether they interact with each other to predict my DV using multiple regression. I typically center my...

    Started by psychologygirl‎, 02-14-2009 10:07 PM
    • Replies: 4
    • Views: 4,199
    02-16-2009, 08:43 PM Go to last post
  25. Question About a Seemingly Invalid Sampling

    Hi, I was wondering if someone can help me with the following question: Suppose that we were interested in the effects of a prep course on SAT...

    Started by snipez‎, 02-15-2009 03:30 AM
    • Replies: 1
    • Views: 1,874
    02-15-2009, 03:35 PM Go to last post
  26. multiple comparisons

    Hi, I'm a vet doing a research project, but am not really strong in stats. I have a question about whether correction for multiple comparisons is...

    Started by jknuppel‎, 02-09-2009 09:13 PM
    • Replies: 8
    • Views: 2,982
    02-13-2009, 02:12 AM Go to last post
  27. Percentage/proportion prediction interval

    Hi, anyone could help with this: we know that with a considerably large sample we can estimate what is the proportion of cases having a certain...

    Started by Johngr55‎, 02-09-2009 12:38 PM
    • Replies: 1
    • Views: 3,199
    02-09-2009, 01:00 PM Go to last post
  28. Comparing regression equations

    I am thinking of trying to use the logit model to determine the probability of whether patients will participate in a particular health program. My...

    Started by Clouds1988‎, 02-07-2009 07:35 PM
    • Replies: 2
    • Views: 3,351
    02-08-2009, 11:31 AM Go to last post
  29. Linear Regression Models

    I am being asksed if an equation is linear in the paramenters or variables and I am a bit lost. I understand that for something to be linear it cant...

    Started by ajmax01‎, 02-01-2009 12:19 AM
    • Replies: 1
    • Views: 2,388
    02-01-2009, 10:04 AM Go to last post
  30. Risk Model Re-Weighting Help Needed

    Long story somewhat short My company uses a risk model with 10+ variables. Each of these variables is weighted according to the risk it...

    Started by Forty6ixAnd2‎, 01-19-2009 08:52 PM
    • Replies: 2
    • Views: 2,216
    01-28-2009, 03:13 PM Go to last post
  31. "Best" Multiple (Multivariate) Nonlinear Regression?

    Hi all, I'm just getting started in R. I've had good luck finding the right (predictive) correlation weights using orthogonal polynomials in Java....

    Started by Axl‎, 01-21-2009 05:58 PM
    • Replies: 2
    • Views: 3,630
    01-22-2009, 03:05 PM Go to last post
  32. Stats analysis help would be very much appreciated

    I have carried out some research. The research involved respondents filling in a questionnaire of 62 questions. Answers were on a scale - Strongly...

    Started by oakmoss‎, 01-18-2009 09:32 AM
    • Replies: 4
    • Views: 2,787
    01-20-2009, 06:33 AM Go to last post
  33. Logistic regression or DFA?

    Hi! I am trying to get my masters thesis done. I am taking a statistics course right now, but I need to get started on things sooner rather than...

    Started by Merlion‎, 01-14-2009 10:52 PM
    • Replies: 3
    • Views: 5,197
    01-15-2009, 08:43 AM Go to last post
  34. Unbalanced Sample Sizes

    Given two variables: one is a single estimate measured on one individual, the other is comprised of multiple samples taken from the same individuals...

    Started by scoter‎, 01-12-2009 05:06 PM
    • Replies: 0
    • Views: 2,509
    01-12-2009, 05:06 PM Go to last post
  35. Statistical Significance

    I am completing a statistics project having been given data for 30 years. I have calculated the pairwise correlation coefficients between Infant...

    Started by shanny9‎, 01-04-2009 07:22 AM
    • Replies: 2
    • Views: 2,907
    01-04-2009, 03:42 PM Go to last post
  36. Unhappy multiple regression analysis on likertscale

    Dear All, I am doing the analysis of my data obtained through a questionaire. i want to find the relationship of different forms justice...

    Started by Mobushir riaz Khan‎, 12-22-2008 10:18 AM
    • Replies: 1
    • Views: 2,119
    12-24-2008, 07:46 AM Go to last post
  37. Linear regression

    Hi all I was given a data sample of 35 countries which included the country name,the number of railways and the number of airports in the given...

    Started by gloew‎, 12-19-2008 04:44 AM
    • Replies: 6
    • Views: 2,851
    12-23-2008, 06:09 PM Go to last post
  38. Multiple logistic Regression Power Analysis

    Hi to everybody, Please does anybody can help me to solve this problem? I have a multiple logistic regression model with more than one BINARY...

    Started by Canyon75‎, 12-20-2008 08:05 AM
    • Replies: 1
    • Views: 4,430
    12-22-2008, 09:04 AM Go to last post
  39. Hlm?

    I am working with a large data set, n = 1200+ average course grades culled from over 15,000 students from a school. I ran a regression using average...

    Started by ewblack‎, 12-09-2008 01:23 PM
    • Replies: 9
    • Views: 4,522
    12-17-2008, 12:21 PM Go to last post
  40. Binary Logistic Regression in R

    Warning: this is going to be a long post. Acknowledgement: Thanks to The Ecologist for getting me started on what I hope is the right road. This...

    Started by jerh‎, 12-04-2008 11:10 AM
    2 Pages
    1 2
    • Replies: 24
    • Views: 21,867
    12-16-2008, 03:21 AM Go to last post
  41. adjusting a proportion score (controling for age)

    I have 20 yes/no ratings (did this product help you). People were able to rate as many of the 20 products as they used (on average people rated 5...

    Started by chinaplate‎, 12-15-2008 10:19 PM
    • Replies: 8
    • Views: 4,040
    12-15-2008, 11:23 PM Go to last post
  42. ANOVA confusions- Please Help

    Hello, I was wondering if you could please offer any advice as I appear to have got rather muddled. I am writing a resesarch proposal, and I...

    Started by GuineaPig‎, 12-09-2008 03:35 PM
    • Replies: 8
    • Views: 2,704
    12-10-2008, 11:14 PM Go to last post
  43. Can you guys check these for me

    Shade answers to T/F questions and type letter answer to multiple choice questions next to problem number. Chapters 13 & 14 included. T F 1. If a...

    Started by Bicano‎, 12-08-2008 11:07 AM
    • Replies: 1
    • Views: 4,991
    12-08-2008, 03:33 PM Go to last post
  44. Question Multiple Regression & Multiple Linear Regression: 2 Qu's

    I know these are 2 very basic question, but if someone could please confirm them for me I'd be very grateful indeed: 1. Am I correct in thinking...

    Started by gemma7‎, 08-31-2008 08:49 AM
    • Replies: 4
    • Views: 12,370
    12-05-2008, 03:40 PM Go to last post
  45. price determination prediction

    Its been 2 years since my last statistics class. I did fairly well but the material isn't so fresh since I haven't had to use it. I am writting a...

    Started by mikeo1313‎, 12-01-2008 02:56 AM
    • Replies: 1
    • Views: 2,001
    12-01-2008, 03:14 AM Go to last post
  46. Did i get theese right i am confused, can anyone help me please

    25. In multiple regression analysis, residual analysis is used to test the requirement that A) the variation in the residuals is the same for all...

    Started by Bicano‎, 11-30-2008 08:26 PM
    • Replies: 2
    • Views: 20,927
    11-30-2008, 09:08 PM Go to last post
  47. Testing for difference 2 regression models

    Hello, I am working on multiple regressions at the moment and have come to a point that I need a little assistance. I have the following question:...

    Started by devreede‎, 11-28-2008 12:16 PM
    • Replies: 8
    • Views: 25,065
    11-29-2008, 11:29 AM Go to last post
  48. Looking for mult. linear regression equations

    Hi - I'm having trouble finding the equations for the coefficients for a multiple linear regression with two independent variables (a=, b1=, b2=). ...

    Started by dave25‎, 11-26-2008 07:28 PM
    • Replies: 1
    • Views: 2,502
    11-26-2008, 08:13 PM Go to last post
  49. Cool Multiple Regression with Multiple Groups

    Hello, I am looking at predictor variables (scores on partner perception measures) on a criterion variable (relationship satisfaction), in order to...

    Started by Shadow3758‎, 11-26-2008 05:35 PM
    • Replies: 9
    • Views: 5,194
    11-26-2008, 06:58 PM Go to last post
  50. Independent variables correlate to each other: violation of regression assumoptions?

    Ok, so bear with me - total statistical idiot here, in way over his head. I'm running multiple regressions of plant cover against precipitation,...

    Started by Charlie‎, 11-13-2008 03:37 PM
    • Replies: 11
    • Views: 13,178
    11-19-2008, 10:17 AM Go to last post
  51. Help needed with ANOVA analysis

    ANOVA df SS MS F Significance F Regression 6 5510.4 918.4 11.67 0.0081 Residual 5 393.2 78.65 Total ...

    Started by d.g.aspinall‎, 11-17-2008 07:46 PM
    • Replies: 1
    • Views: 4,564
    11-18-2008, 03:32 PM Go to last post
  52. Two-way ANOVA...or not?

    The following data is observed by a building society: No of mortgage applications per month Year 1989 1990 1991 1992 AVERAGE Season...

    Started by sashimi‎, 11-16-2008 06:04 AM
    • Replies: 0
    • Views: 1,914
    11-16-2008, 06:04 AM Go to last post
  53. Muliple regression - lets try again

    I posted a question earlier (variable transformation) and am wondering if I didn't explain myself very well. Here's a more straighforward and paired...

    Started by statishtics‎, 08-20-2008 01:30 PM
    • Replies: 2
    • Views: 2,380
    11-13-2008, 07:26 PM Go to last post
  54. Calculations for the unstandardized coefficients for a multiple regression analysis

    I am looking to write a spreadsheet of the calculations for the unstandardized coefficients for a multiple regression analysis (the B values). ...

    Started by Baggies‎, 11-10-2008 03:54 AM
    • Replies: 3
    • Views: 17,771
    11-11-2008, 04:53 AM Go to last post
  55. calculating multiple regression by hand

    How would you calculate a regression equation such as Y = b1X1 + b2X2 + b3X3 + a by HAND??? I can find in textbooks the way to calculate two...

    Started by HCrazy‎, 11-10-2008 11:52 PM
    • Replies: 1
    • Views: 21,589
    11-11-2008, 12:04 AM Go to last post
  56. Factor analysis with non-normal distribution?

    Hi all, Does anyone know an alternative to factor anlysis for non-normal distrbutions which explores factors or clusters on a set of 64...

    Started by Wiggy‎, 11-06-2008 05:59 AM
    • Replies: 3
    • Views: 15,344
    11-06-2008, 02:26 PM Go to last post
  57. multiple comparison issue in linear regression

    I am puzzled by the following question: If you have a 3-level categorical predictor in a linear regression model, you will get 2 estimated...

    Started by nahh‎, 11-05-2008 04:41 PM
    • Replies: 0
    • Views: 2,671
    11-05-2008, 04:41 PM Go to last post
  58. Is there any limitation on number of predictors if I run stepwise linear regression

    Hi... I need help to solve a problem actually i want to do stepwise linear regression and my predictors are 2279 (differenct combinations of soil...

    Started by Mobushir riaz Khan‎, 10-21-2008 02:40 PM
    • Replies: 0
    • Views: 2,008
    10-21-2008, 02:40 PM Go to last post
  59. Standard Deviation or Response / Prediction - Linear Regression

    Hi, I'm hoping someone out there can help me with what is probably a very simple question. For a stats assignment, I've created a linear...

    Started by dzeni‎, 10-05-2008 06:28 PM
    • Replies: 4
    • Views: 10,802
    10-20-2008, 04:47 AM Go to last post
  60. Help!

    Hi, I'm in the social sciences (psych) using cross sectional data. I'm completing a multiple hierarchical regression looking at interaction...

    Started by statishtics‎, 10-15-2008 05:12 PM
    • Replies: 3
    • Views: 1,928
    10-16-2008, 07:49 AM Go to last post

+ Post New Thread

Thread Display Options

Use this control to limit the display of threads to those newer than the specified time frame.

Allows you to choose the data by which the thread list will be sorted.

Order threads in...

Note: when sorting by date, 'descending order' will show the newest results first.

Icon Legend

Contains unread posts
Contains unread posts
Contains no unread posts
Contains no unread posts
More than 15 replies or 300 views
Hot thread with unread posts
More than 15 replies or 300 views
Hot thread with no unread posts
Closed Thread
Thread is closed
Thread Contains a Message Written By You
You have posted in this thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts






Advertise on Talk Stats