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Unformatted text preview: from different treatments. For example blinding either subjects or those who evaluate responses or both single-blinding double-blinding Placebo- fake treatment 2. Block. Block or match subjects to reduce variability of responses to the same treatment. 3. Randomize. An experiment requires a random assignment of experimental units to treatments. Randomization allows to equalize the effects of uncontrollable sources of variation. completely randomized design- all experimental units have the same chance to receive any treatment randomized block design- randomization occurs only within blocks 4. Replicate. Replicate over as many subjects as possible and replicate entire experiment with different groups of subjects...
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- Summer '08