ScienceCâu 75 / 120
In a controlled experiment, the variable that is deliberately changed by the researcher is called the:
a.Dependent variable
b.Independent variable
c.Control group
d.Constant
Giải thích
The independent variable is the factor the researcher intentionally manipulates to observe its effect. The dependent variable is what is measured in response.
Luyện miễn phí toàn bộ 120 câu hỏi — không cần đăng ký.
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