A subgroup within a larger population, often distinguished by specific characteristics.

उप-जनसंख्या

English Usage: "The study focused on a particular sub-population of teenagers with higher anxiety levels."

Hindi Usage: "अध्ययन ने उच्च चिंता स्तर वाले किशोरों की एक विशेष उप-जनसंख्या पर ध्यान केंद्रित किया।"