controlled experiment
noun/kənˌtrəʊld ɪkˈsperɪmənt/
/kənˌtrəʊld ɪkˈsperɪmənt/
- a scientific experiment in which only one condition is changed in each of several tests in order to find out what effect that condition has on the results of the experiment
- Controlled experiments show how shore crabs of different sizes respond to ship noise.
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controlled experiment