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Forum: R

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

  1. 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: 26,218
    10-17-2012, 07:20 PM Go to last post
  2. 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: 124,685
    04-14-2016, 01:02 PM Go to last post
  3. 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: 256,848
    09-13-2016, 03:35 PM 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: 117,277
    12-13-2016, 05:47 PM Go to last post
  5. 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: 13,551
    07-20-2017, 10:43 AM Go to last post
  6. 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: 112,261
    09-29-2017, 08:14 PM Go to last post
  7. 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: 271,161
    11-05-2017, 08:22 PM Go to last post
  1. 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: 16,712
    10-09-2005, 08:42 PM Go to last post
  2. 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: 3,581
    12-06-2005, 09:43 PM Go to last post
  3. 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: 7,263
    12-10-2005, 09:09 PM Go to last post
  4. 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: 30,443
    01-22-2006, 05:19 PM Go to last post
  5. 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: 3,149
    02-01-2006, 04:43 AM Go to last post
  6. 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: 6,983
    02-09-2006, 09:46 AM Go to last post
  7. 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: 3,779
    02-13-2006, 12:17 PM Go to last post
  8. 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: 3,072
    02-28-2006, 03:08 AM Go to last post
  9. 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: 2,874
    03-07-2006, 05:15 PM Go to last post
  10. 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: 3,816
    03-07-2006, 10:16 PM Go to last post
  11. 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: 5,035
    03-13-2006, 09:00 AM Go to last post
  12. 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: 5,523
    03-24-2006, 04:46 PM Go to last post
  13. 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: 2,141
    03-25-2006, 08:05 AM Go to last post
  14. 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: 3,689
    04-20-2006, 10:34 AM Go to last post
  15. 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: 2,989
    05-05-2006, 12:51 PM Go to last post
  16. 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: 2,871
    06-13-2006, 01:22 PM Go to last post
  17. 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: 5,426
    06-28-2006, 10:38 AM Go to last post
  18. 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: 5,333
    06-29-2006, 01:35 AM Go to last post
  19. 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: 3,794
    07-06-2006, 01:27 PM Go to last post
  20. 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: 4,229
    07-14-2006, 05:44 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: 3,296
    07-23-2006, 04:24 PM Go to last post
  22. 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: 3,103
    07-24-2006, 11:02 PM Go to last post
  23. 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: 4,714
    07-28-2006, 04:59 AM Go to last post
  24. 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: 2,743
    08-03-2006, 02:30 PM Go to last post
  25. 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: 2,162
    08-09-2006, 05:52 AM Go to last post
  26. 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: 4,198
    08-23-2006, 11:30 AM Go to last post
  27. 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: 3,293
    08-29-2006, 11:41 AM Go to last post
  28. 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: 3,591
    09-02-2006, 12:38 PM Go to last post
  29. 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: 10,031
    09-07-2006, 12:56 PM Go to last post
  30. 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: 3,157
    10-05-2006, 05:26 PM Go to last post
  31. 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: 2,591
    10-08-2006, 11:13 PM Go to last post
  32. 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: 3,708
    10-16-2006, 02:53 AM Go to last post
  33. 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: 6,772
    10-21-2006, 09:53 AM Go to last post
  34. 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: 4,864
    10-25-2006, 08:53 PM Go to last post
  35. 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: 5,030
    10-26-2006, 12:54 PM Go to last post
  36. 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: 3,436
    11-01-2006, 11:33 PM Go to last post
  37. 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: 4,356
    11-02-2006, 11:12 PM Go to last post
  38. 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: 2,955
    11-08-2006, 02:24 PM Go to last post
  39. 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: 4,333
    11-09-2006, 04:13 AM Go to last post
  40. 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: 13,415
    12-02-2006, 07:11 PM Go to last post
  41. 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: 5,401
    12-16-2006, 02:45 AM Go to last post
  42. Not sure which test to use

    Hi this is for a psychology assignment which requires stats analysing. A brief overview of what im testing... The relationship between empathic...

    Started by awais_uk‎, 01-10-2007 08:28 AM
    • Replies: 3
    • Views: 3,293
    01-11-2007, 11:32 PM Go to last post
  43. Please Help - Regression Analysis

    Hi, I was hoping that someone could help me with interpreting my spss output for my honours thesis. I feel very overwhelmed as I am not very...

    Started by nomesxo‎, 11-12-2006 12:26 AM
    • Replies: 2
    • Views: 3,428
    01-17-2007, 11:44 AM Go to last post
  44. Multipanel graphing issue in Splus

    I have a dataset of temperature means split by months and areas, and the number of years used to estimate each mean. I am trying to produce a...

    Started by Retzlaff‎, 01-30-2007 11:43 AM
    • Replies: 0
    • Views: 2,305
    01-30-2007, 11:43 AM Go to last post
  45. Dependent variables

    Hi everyone, I have 2 dependent variables and 1 or more independent. I'd like to see if there is a statistical difference among responders using a...

    Started by Loukas_t‎, 05-11-2007 10:52 AM
    • Replies: 0
    • Views: 3,226
    05-11-2007, 10:52 AM Go to last post
  46. Question Replacement for SuperANOVA?

    Hi all, I used to use the software SuperANOVA for the mac for statistics, but it has since been discontinued :mad: , so I was wondering if anyone...

    Started by fionadz‎, 05-12-2007 02:40 PM
    • Replies: 0
    • Views: 7,116
    05-12-2007, 02:40 PM Go to last post
  47. Repeated Library: R software

    Hi everybody, I am working on Hidden Markov Model. My data cosists of number of infectants over 42 months. I am using repeated library and the...

    Started by regina_verghis‎, 05-20-2007 11:54 PM
    • Replies: 0
    • Views: 3,476
    05-20-2007, 11:54 PM Go to last post
  48. Single Sample t Test using SG?

    Does anyone know how to perform this test using Statgraphics?

    Started by jscholen‎, 05-24-2007 03:41 PM
    • Replies: 0
    • Views: 3,100
    05-24-2007, 03:41 PM Go to last post
  49. Typing in Formulas

    Hi all, I'm typing a paper using Microsoft WORD and need to type in some statistical formulas. However, I don't know how to do it in word. I need...

    Started by Humphrey‎, 06-07-2007 06:03 AM
    • Replies: 4
    • Views: 4,960
    06-15-2007, 01:56 AM Go to last post
  50. Venn diagrams

    Does anyone know how to draw a Venn diagram with Software such as Excel, Word, or Minitab? I've drawn them on paper but my only option would be to...

    Started by ChadP‎, 06-26-2007 09:33 PM
    • Replies: 3
    • Views: 9,480
    06-29-2007, 03:23 AM Go to last post
  51. Question Help in Hidden Markov Modeling

    Hi all... I have a Time series counts(Observed Number of Infectants each Month).. I want to model it using Poisson HMM.. I am using Lindsey'd...

    Started by regina_verghis‎, 07-25-2007 10:05 AM
    • Replies: 0
    • Views: 2,478
    07-25-2007, 10:05 AM Go to last post
  52. Unhappy Research Paper Help!

    My question is simple...I am doing a simple research paper to see if there is a relationship between district expenditures and reading achievement in...

    Started by bren‎, 08-04-2007 11:14 AM
    • Replies: 1
    • Views: 3,895
    08-04-2007, 08:08 PM Go to last post
  53. Generalized linear models in R

    Hi, I've run a generalized linear model in R and reduced it to the minimum adequate model using the dropterm function... but now I want to present...

    Started by Elle‎, 08-24-2007 01:38 PM
    • Replies: 2
    • Views: 4,357
    09-01-2007, 12:33 PM Go to last post
  54. Question Confidence intervals on non-linear models

    Hi all, Does anyone know of a way where i can have minitab outut the confidence intervals for prediction values for non- linear models. I have a...

    Started by sonikudi‎, 09-11-2007 03:02 PM
    • Replies: 0
    • Views: 4,103
    09-11-2007, 03:02 PM Go to last post
  55. Statistics qn using R help!!

    Can anyone help? An experiment was conducted to evaluate the effectiveness of a treatment for tapeworm in the stomachs of sheep. A random sample of...

    Started by georgina_009‎, 10-02-2007 10:20 PM
    • Replies: 1
    • Views: 3,178
    10-04-2007, 04:33 AM Go to last post
  56. Calculating Multiple (500) Confidence Intervals in R

    I'm trying to draw 500 samples from a population of 10,11,12,13,14, and 15. Each sample will be n=10. That's the easy part. Now I can't figure out...

    Started by In A Statistical Malaise‎, 09-18-2007 07:08 AM
    • Replies: 2
    • Views: 4,758
    10-18-2007, 09:02 PM Go to last post
  57. Splus Help please

    Hi everyone. I just got Splus after I heard that it has functions for aligning an irregularly spaced time series to a specified time clock. Basically...

    Started by uberathlete‎, 07-16-2007 11:40 AM
    • Replies: 1
    • Views: 4,473
    10-18-2007, 09:10 PM Go to last post
  58. Installation of R under LINUX PLATFORM

    Hi all, I was using R under windows OS till now, Now I had shifted to LINUX platform. Can you instruct me on the installation of R in LIUNX. I had...

    Started by regina_verghis‎, 06-12-2007 09:28 PM
    • Replies: 2
    • Views: 5,185
    10-18-2007, 09:15 PM Go to last post
  59. Unhappy Help random factors in R

    Hello All. My first post here. I have been struggling with this for about a week now. I have a two factor anova, where both factors are...

    Started by Campitor‎, 10-26-2007 07:13 AM
    • Replies: 1
    • Views: 4,184
    11-01-2007, 04:50 AM Go to last post
  60. Which sofware is suitable to estimate around 100 regression equations simultaneously?

    Hi everyone, I wish to get some idea from all you guys. Which software should I use if (1) I have time series of 100 companies (2) The...

    Started by becoolja‎, 10-31-2007 04:23 PM
    • Replies: 2
    • Views: 3,059
    11-01-2007, 06:20 AM Go to last post

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