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Homework Help: Confounding variable

  1. Dec 8, 2012 #1
    An experiment is set up to test whether a particular insect prefer a dark or a bright environment. A chamber with a gradient in light intensity from one end (dark) to the other (bright) has been made. The experimental hypothesis is:
    “There will be a large difference between the number of insect in a dark side and the number in a bright side of the chamber.”
    Which one could be the three confounding variables?

    A - Varying humidity across the chamber
    B - The orientation of the chamber
    C - The age of the insects
    D - The non-reflective material from which the chamber is made
    E - The type of light source used
    F - Varying temperature across the chamber

    I was thinking A, E and F but there is something wrong ..
    Any help would be appreciated. Thanks
  2. jcsd
  3. Dec 12, 2012 #2
    Can anyone be able to help me with this question? Thanks
  4. Dec 12, 2012 #3


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