Experimental evidence refers to data collected through controlled experiments or observations in order to support or refute a hypothesis or theory. This type of evidence is typically gathered in a laboratory setting or under controlled conditions to ensure that the results are reliable and can be replicated by other researchers. Experimental evidence is considered to be one of the most rigorous forms of evidence in scientific research, as it allows researchers to test specific variables and understand cause-and-effect relationships. This type of evidence is essential for advancing scientific knowledge and understanding in various fields, from biology and chemistry to psychology and sociology.