- नीचे कुछ वर्गान्तरों के मध्य-मूल्य तथा उनकी आवृत्तियाँ दी हुई हैं। इनका बहुलक मूल्य ज्ञात कीजिए।
मध्य-मूल्य- 5 10 15 20 25 30 354045
आवृत्ति 7 13 19 2432 28 178
(उत्तर: बहुलक = 25.83)

explain what the look like and look at when they where created

giovanni battista pergolesi, italian baroque composer who wrote one of the most famous settings of the stabat mater. don lorenzo perosi, catholic priest and director of the sistine choir under five popes.