IB Biology Skills: Validity 1

The video tutorial covers the concept of validity in IB Biology experiments, focusing on the roles of independent, dependent, and controlled variables. It uses examples from an archery competition and a catalase activity experiment to illustrate how these variables affect the validity of conclusions. The tutorial emphasizes the importance of changing only one independent variable at a time to ensure valid results and discusses how to select appropriate dependent variables. It also highlights the need to maintain controlled variables to draw meaningful conclusions.

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