A single study typically does not involve replications of the experiment, but separate studies may be aggregated through systematic review and meta-analysis.
Teɣăre iyyăt war tat amăsuɣăl n amiyiz muchăm tiɣir azun-nen addobat nat amăsidu s amăsuɣăl n akăyăd meɣ amiyiz maqqorăn  .