Examlex
Briefly define "knowledge workers."
Placebo Control Group
is a group in an experiment that receives a sham or inactive treatment, which is used to assess the psychological impact of receiving treatment rather than the treatment's actual efficacy.
Real Control Group
Represents a group in an experiment that does not receive the treatment or intervention, used as a benchmark to measure the effect of the treatment.
Matched Control Group
A group of subjects that is equivalent to the experimental group in key characteristics but does not receive the experimental treatment or intervention.
Error Variance
The portion of variation in a set of observations that arises from random factors as opposed to systematic influences.
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