Question

question 4 (2 points)
which type of variable is manipulated in an experiment?
o a independent variable
b dependent variable
o c controlled variable

question 5 (2 points)
if a scientific phenomenon is summariezed in a concise mathematical or empirical statement, it is most likely a...
o a hypothesis
b theory
o c law

Explanation:

• Question 4: In an experiment, the independent variable is the one that is deliberately changed or manipulated by the researcher. The dependent variable is what is measured and is affected by the independent variable. The controlled variable is kept constant.
• Question 5: A scientific law is a concise mathematical or empirical statement that describes a natural phenomenon. A hypothesis is a proposed explanation that is testable. A theory is a well - supported explanation of a natural phenomenon that is based on a large body of evidence.

Answer:

• Question 4: A. independent variable
• Question 5: C. Law