In an experiment, what is an uncontrolled variable?

An uncontrolled variable is defined as a variable that is not accounted for or controlled by the researcher during an experiment. This means that while other aspects of the experiment could be carefully measured or manipulated, there are certain variables that might impact the results but have not been expressly identified or held constant. These uncontrolled variables can potentially introduce noise or bias into the findings, leading to confusion over the relationship between the measured variables.

In research, it's crucial to identify and control as many variables as possible to ensure valid and reliable outcomes. Failing to do so can complicate the interpretation of results, as uncontrolled variables may influence the dependent variable in unintended ways. This understanding is vital for maintaining the integrity of scientific research and for drawing accurate conclusions based on the data collected.