+ Reply to Thread
Results 1 to 3 of 3

Thread: Interpreting Tukey Test Results

  1. #1
    Points: 4,828, Level: 44
    Level completed: 39%, Points required for next Level: 122

    Posts
    1
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Interpreting Tukey Test Results




    Hi everyone, I am looking for a bit of a push in the right direction.

    I'm a BSc nutrition student at the moment, and although I did a module of stats in Maths A level, I'm totally stuck on this bit of stats for one of my modules at uni.

    What I've done is an experiment to see whether vitamins have an effect on how much oxygen your body uses during 5 minutes of exercise, giving people a different vitamin each week.

    To analyse the results, I got told to do a one way anova, which I managed no problem, followed by a Tukey test post hoc. There was a statistical difference in my one way anova. Now I managed entered the data ok for the Tukey test, and I got the attached data info out of minitab

    What I dont know how to do is tell which week had a difference from these, and why the results show that it was that specific week. I have a feeling it was week 4 though!

    Could anyone help me please?
    Attached Images  
    Last edited by PrettyMinky; 05-03-2007 at 10:12 AM.

  2. #2
    Points: 4,617, Level: 43
    Level completed: 34%, Points required for next Level: 133

    Location
    Tampa
    Posts
    2
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Tukey

    You are correct...the way you tell with Minitab results is to look at the interval. If it doesnt contain zero then theres a statistically significant difference between the means. So 1 is significantly different from 4, 2 is significantly different from 4, 3 and 4, 4 and 5, and 4 and 6.

  3. #3
    Points: 3,840, Level: 39
    Level completed: 27%, Points required for next Level: 110

    Location
    Australia
    Posts
    6
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Hi everybody, I'm new here. I agree with kerri3278 (if you want to see it clearer, you can do analysis by Statgraphics software). But, the point I want to say here is that: you should do comparision between levels of Vitamins (different types of vitamins ----> the real variable of your study), not beetwen weeks (in here, week is not a factor). The name of factor appears in the Turkey test should be Vitamin (vitamin 1, ...n). Please discuss further if you don't agree.

    Cheers,

+ Reply to Thread

           




Similar Threads

  1. Reporting results of Tukey-Kramer posthoc test
    By GrungyGoose in forum Statistics
    Replies: 3
    Last Post: 02-07-2011, 04:08 PM
  2. How to analyze post hoc Tukey test's results?
    By marcoversiani in forum General Discussion
    Replies: 5
    Last Post: 07-24-2010, 09:17 AM
  3. Need help interpreting ANOVA/Tukey HSD test
    By ivy_darling in forum SPSS
    Replies: 0
    Last Post: 11-12-2008, 07:32 AM
  4. Tukey results
    By Leyritz in forum Statistics
    Replies: 1
    Last Post: 03-27-2006, 10:52 AM
  5. Interpreting R results proportions test
    By thestoryteller97 in forum R
    Replies: 1
    Last Post: 02-09-2006, 08:46 AM

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