BIO 301D Lecture Notes - Lecture 11: Blind Experiment
Document Summary
Think of a random odd number between 1 & 10: responses recorded on poll everywhere. 3: most common choice the next most common choice. Each number should have the same percentage. People don"t think randomly, don"t make choices randomly. People don"t think objectively, don"t make choices objectively. When gathering subjective data or when presenting data. How to fix bias: a) choose randomly (random number generator, draw from a hat, flip a coin, roll a dice, etc. , b) and c) blind- do whatever" without knowing what is expected. Subject don"t know what is expected of them. In medicine, a placebo is used for the control group so that everyone thinks they are being treated the same. Those who make them measurements don"t know which group the subjects came from. Comment on random: random can only apply if there is more than one possible assignment group. 3) human and technical error: mistakes, blunders.
