Multiple Choice
What is the primary purpose of statistically analyzing study data in the scientific method?
4. BONUS: Lab Techniques and Procedures
Experimental Error
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In a controlled experiment, how many variables should be tested to ensure reliable results?
A
Three variables
B
Two variables
C
One variable
D
Multiple variables
Verified step by step guidance1
Understand the concept of a controlled experiment: A controlled experiment is designed to test the effect of a single independent variable while keeping all other variables constant.
Identify the independent variable: This is the variable that you change or manipulate in the experiment to observe its effect on the dependent variable.
Recognize the importance of controlling other variables: All other variables, known as controlled variables, should be kept constant to ensure that any observed changes in the dependent variable are solely due to the manipulation of the independent variable.
Acknowledge the role of the dependent variable: This is the variable that you measure or observe in response to changes in the independent variable.
Conclude that testing one variable at a time ensures that the results are reliable and attributable to the changes in the independent variable, eliminating confounding factors.
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