We would do this by making observations or running experiments. What is the difference between an independent and a dependent variable.
Experiments vs Observational Studies: Definition, Differences & Defining the Difference between Parameters & Statistics . First, the variables must be observed and the data must be collected through observation.
investigation. OBSERVATION: It is the act of recording an object in action. Making the world better, one answer at a time. An experiment is designed so that you can observe the differences between the experimental group and the? control.