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Forum: R

R programming and usage, R news, R tips and tutorials

  1. Sticky Thread Sticky: Today I Learned: ____

    I thought it might be nice to just have a place to post some happy little things you learned or (re)discovered about R that makes your life nicer and...

    Started by Dason‎, 01-03-2012 11:39 AM
    27 Pages
    1 2 3 ... 27
    • Replies: 391
    • Views: 270,239
    11-05-2017, 08:22 PM Go to last post
  2. Sticky Thread Sticky: R News and Updates

    I'm starting this thread out of frustration for my own oversight. blog.revolutionanalytics.com was having an R webinar today (LINK) that looked...

    Started by trinker‎, 08-24-2011 09:41 AM
    8 Pages
    1 2 3 ... 8
    news
    • Replies: 115
    • Views: 111,838
    09-29-2017, 08:14 PM Go to last post
  3. Sticky Thread Sticky: What R packages are you aching to see?

    Are there any R packages that don't yet exist that you wish existed? What kinds of things do you wish were easier to do in R? What things do you...

    Started by Dason‎, 11-19-2015 01:38 AM
    • Replies: 2
    • Views: 13,504
    07-20-2017, 10:43 AM Go to last post
  4. Sticky Thread Sticky: [R Graphics] Beautiful graphics thread

    Hi Everyone, I thought I might start a thread which showcases the graphics abilities of R. I'll start it off with one I just made. This thread...

    Started by TheEcologist‎, 10-17-2012 05:08 AM
    9 Pages
    1 2 3 ... 9
    • Replies: 120
    • Views: 116,965
    12-13-2016, 05:47 PM Go to last post
  5. Sticky Thread Sticky: Share your functions & code

    I’m starting this thread as a sharing thread. The power of is in building and sharing on one another’s creativity. I’m often amazed at how people...

    Started by trinker‎, 06-25-2011 03:42 PM
    20 Pages
    1 2 3 ... 20
    • Replies: 286
    • Views: 256,017
    09-13-2016, 03:35 PM Go to last post
  6. Sticky Thread Sticky: Info for R users (Links, Manuals, Books, etc.)

    Note: This original post has been modified to make it easier to find the resources in the thread and to compile them into one location. If you want...

    Started by Tart‎, 08-06-2008 09:22 AM
    7 Pages
    1 2 3 ... 7
    information
    • Replies: 100
    • Views: 124,358
    04-14-2016, 01:02 PM Go to last post
  7. Sticky Thread Sticky: How to use Code tags

    Using Code Tags This thread contains a brief introduction to using code tags and presenting code in general on this forum. I'm biased toward R so...

    Started by Dason‎, 10-17-2012 07:20 PM
    • Replies: 0
    • Views: 26,160
    10-17-2012, 07:20 PM Go to last post
  1. Calender year vs. Fiscal year

    I have a very basic question. I want to extract variables based on a date. Specifically I want to create a variable "Quarters" from a date. I am...

    Started by Therese‎, 12-13-2006 06:49 PM
    • Replies: 1
    • Views: 5,378
    12-16-2006, 02:45 AM Go to last post
  2. ANOVA table in R

    When using the following commands fit<-aov(lm(data~group)) summary(fit) to produce an ANOVA table, I can see the F-value but how would I determine...

    Started by capo_mo‎, 12-01-2006 12:42 PM
    • Replies: 1
    • Views: 13,398
    12-02-2006, 07:11 PM Go to last post
  3. Need help with R(Barplot)

    So, I'm trying to barplot, and it won't show up, how do I correct this?

    Started by naivesincerity‎, 11-08-2006 12:04 PM
    • Replies: 7
    • Views: 4,321
    11-09-2006, 04:13 AM Go to last post
  4. Trailing Correlations

    Helle there!!! I wonder if anyone has any idea how I can automatate correlation creation for a 100 row set of data. I need SPSS to create...

    Started by zealot‎, 11-08-2006 02:24 PM
    • Replies: 0
    • Views: 2,950
    11-08-2006, 02:24 PM Go to last post
  5. To use Independent t-tests or univariate GLM??? Help!

    SPSS HELP My research is a psych experimental 2 independent between subjects design. My independent variable is (task type- maping or prose). I am...

    Started by ez_e‎, 11-02-2006 11:12 PM
    • Replies: 0
    • Views: 4,346
    11-02-2006, 11:12 PM Go to last post
  6. R - multivariable regression?

    I keep getting coefficients that don't make any sense. class(<-~++) summary(lm(,)) Coefficients: Estimate Std. Error t value...

    Started by bwik‎, 10-31-2006 10:30 PM
    • Replies: 1
    • Views: 3,429
    11-01-2006, 11:33 PM Go to last post
  7. Exclamation Kaplan Meier Survival analysis - Need help please!

    Hi I am a doc doing a research job, I am familiar with basics of statistics. I am currently doing a KM survival analysis. I am using SPSS 14. ...

    Started by Raj‎, 10-26-2006 12:54 PM
    • Replies: 0
    • Views: 5,017
    10-26-2006, 12:54 PM Go to last post
  8. Question removing a comma from a variable

    I inported a huge file of over 550,000 entries. The last column variable is "date" and instead of being imported for example, 11/05/05, it got...

    Started by randio23‎, 10-25-2006 10:14 AM
    • Replies: 1
    • Views: 4,849
    10-25-2006, 08:53 PM Go to last post
  9. Significance Level

    Hi there, I have to perform a hypothesis test at the alpha = 0.02 significance level to compare two means. In SPSS, I have chosen Analyze/Compare...

    Started by nat9‎, 10-21-2006 06:09 AM
    • Replies: 1
    • Views: 6,750
    10-21-2006, 09:53 AM Go to last post
  10. HLM multi level analysis

    Hello I am having trouble starting off with making MDM file in HLM. It is reading the SPSS as "empty". Does anyone know how to correct this? ive...

    Started by robinb‎, 10-16-2006 02:53 AM
    • Replies: 0
    • Views: 3,702
    10-16-2006, 02:53 AM Go to last post
  11. Help needed to find appropriate methodology..

    Hello all, I am working on a marine data project. I have the accident locations ( Lat/long) as points. I also have lines for the ship routes, But...

    Started by Shruti‎, 10-08-2006 11:13 PM
    • Replies: 0
    • Views: 2,588
    10-08-2006, 11:13 PM Go to last post
  12. Methods to find symmetry of dist.

    I am asked to use 3 different stat tools to discuss the symmetry of the distribution of a set of given data (a data file with 2 columns). Maybe to do...

    Started by capo_mo‎, 10-05-2006 02:15 PM
    • Replies: 1
    • Views: 3,145
    10-05-2006, 05:26 PM Go to last post
  13. standardized kurtosis and standardized skewness

    Hi, I have seen in StatGraphics that they report, besides the skewness and kurtosis, the standardized skewness and standardized kurtosis to test...

    Started by rocket‎, 09-07-2006 12:56 PM
    • Replies: 0
    • Views: 10,006
    09-07-2006, 12:56 PM Go to last post
  14. help needed in statistics

    hey there, this is neeral beladia. can you suggest a gud book on statistical analysis

    Started by beladia‎, 08-28-2006 01:34 PM
    • Replies: 1
    • Views: 3,583
    09-02-2006, 12:38 PM Go to last post
  15. The ultimate R thread

    Hi everybody. I thought it might be useful if I posted a thread to account for pretty much all R discussion. I'm learning it right now, so that's how...

    Started by naivesincerity‎, 08-29-2006 11:41 AM
    • Replies: 0
    • Views: 3,286
    08-29-2006, 11:41 AM Go to last post
  16. Multipanel graphs in Splus

    I'm trying to produce a multipanel graph in Splus and I can't seem to figure out how to do it, and was hoping that someone here could help me out...I...

    Started by hez‎, 08-23-2006 11:30 AM
    • Replies: 0
    • Views: 4,192
    08-23-2006, 11:30 AM Go to last post
  17. any one can help?

    Hi all Can I get some help from you, I am a research student I developed questionnaire to get some information but after I get the results I am...

    Started by almohandes‎, 08-09-2006 05:52 AM
    • Replies: 0
    • Views: 2,157
    08-09-2006, 05:52 AM Go to last post
  18. Generalised methods of moment

    Does anyone know how to use GMM in SPSS? OR does it have such a feature? Thank you!

    Started by Minnie‎, 08-03-2006 02:30 PM
    • Replies: 0
    • Views: 2,739
    08-03-2006, 02:30 PM Go to last post
  19. Adjusting regression for finite population

    Sorry, just read about not posting the same question in more than one forum. Please ignore this one then. ====================== I have a sample...

    Started by stepha‎, 07-28-2006 04:59 AM
    • Replies: 0
    • Views: 4,696
    07-28-2006, 04:59 AM Go to last post
  20. Question how robust is regression?

    If one violates all hierarchical regression assumptions, how much of an impact will that be on results? Some textbooks state that regression is...

    Started by Nin‎, 07-24-2006 11:02 PM
    • Replies: 0
    • Views: 3,096
    07-24-2006, 11:02 PM Go to last post
  21. Transforming latitudes and longitudes into Uniform Variables

    I've got a range of latitude coordinates that i'd like to transform into a uniform variable (0-1 scale with 0 being the minimum latitude and 1 being...

    Started by dmabrey‎, 07-22-2006 04:02 PM
    • Replies: 1
    • Views: 3,289
    07-23-2006, 04:24 PM Go to last post
  22. standardized coefficients

    I am working with stata, using quantile regression how can I get standarized coefficients

    Started by gauss‎, 07-14-2006 05:42 PM
    • Replies: 1
    • Views: 4,203
    07-14-2006, 05:44 PM Go to last post
  23. Help With Continuous Data

    I am a new SPSS user and I am trying to analyze some data that I want to leave continuous. I am trying to determine how to sum the question or item...

    Started by gmg‎, 07-03-2006 03:03 PM
    • Replies: 2
    • Views: 3,781
    07-06-2006, 01:27 PM Go to last post
  24. Automatic numbering

    Hi everyone, I have defined a new variable in my SPSS file. This is students' IDs. I want to number them from 1-6543. How can I automatically do it?...

    Started by Humphrey‎, 06-19-2006 04:26 AM
    • Replies: 2
    • Views: 5,324
    06-29-2006, 01:35 AM Go to last post
  25. common intercept separate slope model

    I will appreciate any suggestion on how to fit a common intercepts sepatate slope using JMP sas. I know how to fit commom slope/intercept and...

    Started by flfeli‎, 06-28-2006 10:38 AM
    • Replies: 0
    • Views: 5,398
    06-28-2006, 10:38 AM Go to last post
  26. can any1 plz guide me here!!!!!!R-codes help

    In your data set, there are 40 observations and the first column is the energy level, the second to the fifth columns are the four predictor...

    Started by kal‎, 06-13-2006 01:22 PM
    • Replies: 0
    • Views: 2,868
    06-13-2006, 01:22 PM Go to last post
  27. muliple regression

    I know you can do a regression with 2 independent variables... but can you do it with 2 dependent?

    Started by elce‎, 05-04-2006 11:55 PM
    • Replies: 3
    • Views: 2,986
    05-05-2006, 12:51 PM Go to last post
  28. Controls in Regression

    Hello, I am currently running a regression on my data set and would like to control for the effects of several variables. I cannot, however,...

    Started by nadia‎, 04-20-2006 09:30 AM
    • Replies: 1
    • Views: 3,676
    04-20-2006, 10:34 AM Go to last post
  29. total score with MC questions, Please help

    Hi List, I have a SPSS file in which I have input the data for some multiple choice math tests. In each cell I have put the option number that the...

    Started by Humphrey‎, 03-25-2006 08:05 AM
    • Replies: 0
    • Views: 2,136
    03-25-2006, 08:05 AM Go to last post
  30. Exclamation Contour Plot in R

    hi!! I am fitting a non linear model to my data. I have two parameters to estimate i.e. b1 and b2. I wanted to plot the estimates of parameter b1...

    Started by binodm‎, 03-24-2006 04:46 PM
    • Replies: 0
    • Views: 5,519
    03-24-2006, 04:46 PM Go to last post
  31. Paired sample data analysis

    Hey :) i'm a engineering student from new zealand. In our mathematical modelling paper there is a small statistics section, which i am not too...

    Started by braddles‎, 03-12-2006 04:54 AM
    • Replies: 8
    • Views: 5,031
    03-13-2006, 09:00 AM Go to last post
  32. Simple Question

    In SPSS i want to insert a varibale of range 1 to 100. Is there a formula, like in excel, for this. Where do i insert the formula? There must be a...

    Started by wrongturn_rodeo‎, 03-07-2006 09:55 PM
    • Replies: 1
    • Views: 3,808
    03-07-2006, 10:16 PM Go to last post
  33. Interaction Effects in CBC

    Hi All, We have a CBC study with 8 factors (features) with following no of levels (5, 5, 4, 3, 2, 2, 2, 2). We have collected data and are in the...

    Started by zaisaki‎, 03-07-2006 05:15 PM
    • Replies: 0
    • Views: 2,866
    03-07-2006, 05:15 PM Go to last post
  34. A bootstrap question for "R" users

    Hi everybody, I have to perform a statistical test to confirm the difference of the mean of a certain variable between male and female species...

    Started by statnew‎, 02-28-2006 03:08 AM
    • Replies: 0
    • Views: 3,061
    02-28-2006, 03:08 AM Go to last post
  35. Which stats package is the best for medical research?

    Which package would you recommend, SPSS, STATA, or SAS? Or something else???

    Started by Susanbwh‎, 02-09-2006 08:54 AM
    • Replies: 5
    • Views: 3,770
    02-13-2006, 12:17 PM Go to last post
  36. Interpreting R results proportions test

    I hope someone can help me. I'm really bad at statistics and the funny thing is that I'm a researcher so I have to understand them. My problem is...

    Started by thestoryteller97‎, 02-09-2006 09:29 AM
    • Replies: 1
    • Views: 6,976
    02-09-2006, 09:46 AM Go to last post
  37. Question Death Process using R Software

    Hello If anyone can help me you are a genius (in my book anyway!) R-Software is a downsized version of the famous S-plus software. I was...

    Started by sdslrn123‎, 02-01-2006 04:43 AM
    • Replies: 0
    • Views: 3,140
    02-01-2006, 04:43 AM Go to last post
  38. Test for Normal Distribution

    I have a data set and I want to know whether it is Normally distributed or not. How can I do this easily? I would prefer to be able to do it in Excel...

    Started by tja26‎, 01-18-2006 11:04 AM
    • Replies: 2
    • Views: 30,422
    01-22-2006, 05:19 PM Go to last post
  39. Help

    Here is the question below: Given below are the analysis of variance results from a Minitab display. Assume that you want to use a 0.05...

    Started by 1NAMILL‎, 12-10-2005 05:54 PM
    • Replies: 3
    • Views: 7,245
    12-10-2005, 09:09 PM Go to last post
  40. pl. help a novice

    Hello. I need help with determining whether there is sig diff. between enco 1 and enco 2 on three measures data is collected on RCMAS (coded as pa,...

    Started by shants‎, 12-06-2005 06:56 PM
    • Replies: 5
    • Views: 3,564
    12-06-2005, 09:43 PM Go to last post
  41. Unhappy skew and kurtosis using std error

    Im using "frequencies" on SPSS Student version. We are supposed to determine skewness and curtosis by dividing each by respective std error, then...

    Started by kalbright36‎, 10-09-2005 05:39 AM
    • Replies: 4
    • Views: 16,687
    10-09-2005, 08:42 PM Go to last post

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