Experiments or observational studies in which only one variable is manipulated are described as controlled
This is further explained below.
<h3>What are
controlled Experiments?</h3>
Generally, An experiment or observation that is aimed to minimize the influence of factors other than the independent variable is known in the scientific community as a "scientific control."
This makes the data more reliable, and it is often accomplished by comparing control measures to the other measurements.
In conclusion, Experiments or observational studies that are considered controlled are those in which the manipulation of only one variable takes place.
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