Multiple Choice
In an experimental design, what is typically controlled in a controlled study?
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1. Introduction to Biology
Experimental Design
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In the context of experimental design, how many independent variables should a well-designed experiment test at one time?
A
One
B
Three
C
Two
D
As many as possible
Verified step by step guidance1
Understand the concept of independent variables: Independent variables are the factors or conditions that the experimenter manipulates to observe their effect on the dependent variable.
Recognize the importance of controlling variables: In a well-designed experiment, controlling all other variables except the independent variable ensures that any observed changes in the dependent variable are due to the manipulation of the independent variable.
Learn the principle of testing one independent variable at a time: Testing multiple independent variables simultaneously can lead to confounding results, making it difficult to determine which variable caused the observed effect.
Consider the goal of clarity and reproducibility: By testing one independent variable at a time, the experiment becomes easier to interpret and replicate, which is a fundamental aspect of scientific research.
Conclude that a well-designed experiment should test only one independent variable at a time to ensure valid and reliable results.
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