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Words
bias
block
census
cluster sample
confounding
control group
convenience sample
double-blind
experiment
experimental units
factor
level
matching
multistage sample
nonresponse bias
observational study
placebo
placebo effect
population
population parameter
prospective study
random assignment
randomization
representative
response
response bias
retrospective study
sample
sample statistic
sample survey
sampling frame
sampling variability
simple random sample
single-blind
statistically significant
stratified random sample
systematic sample
treatment
undercoverage
voluntary response bias