Answer:
Paired difference experiment
Explanation:
A paired difference experiment makes use of a paired difference test to compare two different measurements using the same unit to make inferences about population means. In other words, it is the assessment of population means by comparing two sets of measurements with the same unit,
A paired difference test can be used to assess the measurements gotten from before or after a treatment in an experiment. It can also be used to assess between controls and matching cases of diseases.
