निम्न बारम्बारता बंटन की मध्यिका ज्ञात कीजिए |
{:("साप्तहिक मजदूरी : ",`(60-69,70-79,80-89,90-99,100-109,110-119)`,("(रु . में )",,,,,,),
("दिनों की संख्या :"," "`(5," "15," "20," "30," "20," "8)`:}