It started from 2014 and it is still going on, present day (2014-present day)
In some research, the researchers are not able to use random assignments to divide participants among groups. Instead, they compare preexisting groups, which results in a quasi-experimental design.
Random assignments are those which are given as a matter of chance to ensure fairness and equal opportunity for all participants. Here participants forming multiple groups are with similar characteristics. So all groups are the same at the start of the experiment.
A quasi-experimental design applies a non-random method, and subjects are assigned to preexisting groups. There are some situations where true experiments can't be used for practical reasons. In such cases, a quasi-experimental design is a suitable tool.
To learn more about quasi experimental design here
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Opium wars is the name given to the 19th century conflict between Britain and China, which centered around a dispute between a specific and illegal good being imported into China by English merchants.
The Articles of Confederation created a national government composed of a Congress, which had the power to declare war, appoint military officers, sign treaties, make alliances, appoint foreign ambassadors, and manage relations with Indians. ... Under the Articles, the states, not Congress, had the power to tax.
from : high school
Galvanometer is the instrument that is NOT used to take weather measurements.
Answer: C).
