Unit 3: Experimental Practices & Reasons Flashcards
1
Q
randomly samples (NOT volunteers)
A
reduce bias and allows generalization to the population
2
Q
random assignments of treatments
A
reduce effect of confounding variables
3
Q
control group
A
provides baseline for comparison
4
Q
placebo
A
provides comparison of treatment to placebo effect
5
Q
matched pairs/blocking
A
reduces variation by differences in subjects
6
Q
blinding
A
reduces bias from subjects and/or researchers
7
Q
replication
A
tell the difference between the way individuals vary and the treatment
8
Q
increase sample size
A
reduces the variability of the statistics (makes more precise)
9
Q
experiments over observational studies
A
random assignment of the treatments balances out the effect of confounding variables so the effects of the treatment can be observed. can show cause and effect.
