Find 'p' if the mean of the given data is 15.45. Classes 0 – 6 6 – 12 12 – 18 18 – 24 24 –30 Frequency 6 8 p 9 7 Share with your friends Share 3 Agastya answered this Hope it helps -4 View Full Answer Aishwaryaks answered this SUM OF FREQUENCY OR FI=30+P SUM OF FIXI=468+15P MEAN=FIXI/FI 15.45=468+15P/30+P 15.45(30+P)=468+15P 463.5+15.45P=468+15P 15.45P-15P=468-463.5 0.45P=4.5 P=4.5/0.45 P=10 3 Arjun Rajbansh answered this CI fi xi fixi 0-6 6 3 18 6-12 8 9 72 12-18 p 15 15p 18-24 9 21 189 24-30 7 27 189 total- 30+p 468 + 15p mean = 15.45 mean = sigma fixi / sigma fi or 15.45 = 468 + 15 p / 30 +p or p = 10 Hence P= 10 -1
