Examlex
In a double-blind experiment, neither the participants nor the researchers who interact with the participants know who is in the experimental group or who is in the control group.
Barter
Barter is a system of exchange where goods or services are directly traded for other goods or services without using a medium of exchange, such as money.
Extermination Services
Professional services aimed at eliminating unwanted pests, insects, or animals from homes, businesses, or specific areas.
Babysitting Services
A service that involves taking care of children on behalf of the children's parents or guardians for a temporary period.
Store Of Value
An asset that can be saved, retrieved, and exchanged at a later time, and be predictably useful when retrieved.
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