+ Reply to Thread
Results 1 to 3 of 3

Thread: Need help determining what test to use

  1. #1
    Points: 9, Level: 1
    Level completed: 17%, Points required for next Level: 41

    Posts
    2
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Question Need help determining what test to use




    Hello,

    I would like to ask for help determining what test to use. In my assignment I need to determine if different candy causes cavities in different parts of the mouth.

    So I have a variable for candies (1 = candy X, 2 = candy Y, ... 13 = candy Z) and 32 variables for every tooth a human has, where 1 = has a cavity, 2 = does not have a cavity.

    Am I right to use Chi-Square test in this instance? Thank you in advance for help.

  2. #2
    Omega Contributor
    Points: 38,413, Level: 100
    Level completed: 0%, Points required for next Level: 0
    hlsmith's Avatar
    Location
    Not Ames, IA
    Posts
    7,004
    Thanks
    398
    Thanked 1,186 Times in 1,147 Posts

    Re: Need help determining what test to use

    Pedagogically you could answer this question with a basic proposed test. However, caries on one tooth could effect another. The observations are not independent, so most basic approaches would be inappropriate.


    If Candy#1 causes bacteria to grow around tooth 24 and subsequent decay, well you could also get a cary on tooth 23 because of this (e.g., contact cary). Correct?
    Stop cowardice, ban guns!

  3. #3
    Points: 9, Level: 1
    Level completed: 17%, Points required for next Level: 41

    Posts
    2
    Thanks
    0
    Thanked 0 Times in 0 Posts

    Re: Need help determining what test to use


    It is probably true, that the tooth can get decay from a nearby tooth, but this is just an assignment used to teach statistics (I am currently studying). So basically it could be anything instead of candy and teeth, for example vegetables and cancer in organs. I should have been more clear on this part. So if we ignore the tooth and candy part, should I be using chi square?
    Last edited by Meribah; 06-29-2016 at 11:57 AM.

+ Reply to 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