Answer:
Explanation:
SAT as an empty acronym and changed the name of the test to SAT I: Reasoning Test. Finally, the Roman numeral was dropped. Now the test is known as the SAT Reasoning Test, popularly called the 'SAT'.
Answer:
In an observational study, we measure or survey members of a sample without trying to affect them. In a controlled experiment, we assign people or things to groups and apply some treatment to one of the groups, while the other group does not receive the treatment.
Explanation:
