A group that appears or occurs from time to time rather than regularly.

A subset of a population that is characterized by infrequent representation.

विरल प्रतिनिधित्व वाला उपसमूह

English Usage: Researchers identified an occasional subgroup of participants who showed different behavioral patterns.

Hindi Usage: शोधकर्ताओं ने प्रतिभागियों के एक कभी-कभी समूह की पहचान की, जिन्होंने भिन्न व्यवहार पैटर्न दिखाए।