indepedent samples

  1. J

    Comparing two samples with not independent observations within each one

    Hi, I would appreciate your advice. I have the following experimental design: I measure the heartbeat of a person while he/she listens to music. The hypothesis is that the louder music will result in higher heartbeat rate. So, a subject listens for 30 min classical piece while measuring...
  2. R

    Which sig test to use?

    I want to compare a change in 2 experimental groups to the change in 2 control groups. So I have results for one sample, then retested among another indepedent sample, and was tested among a control group, then retested among a different control. For example, the 1st experimental group had a...