Percentiles and Deciles 1. The amount of prepaid load used by 100 students in a dormitory at certain week has been grouped in the following frequency distribution. Determine Pys and D, Load No. of Students 17N -CF CF P1 - 100 63 P17 = Lp, + 100 . C = 101 - 200 18 fm 201 - 300 10 301 -400 4 401 - 500 5 Ans 3N CFED, D, = Lp + 10 .C = Ans 2. The following tabulation gives the income of a small computer shop for 1 month (30 days). Compute D, and P75 . Income No. of Days 7N - CFD 500.51 - 1,499.50 3 D, = LD, + 10 . C = 1,500.51 - 2,499.50 12 2,500.51 - 3,499.50 9 3,500.51 - 4,499.50 4,500.51 -5,499.50 Ans note: L. = L, -.005 79N. c = 1,499.50- 500.51+.01 -CFP. 100 P19 = Lip + .C = f Pm Ans 3. Salary distribution of 40 employees was tabulated. Find the D, and Do 7N - CF am Salary No. of Employees D, = Lix + 10 101-200 .C= 2 201-300 301-400 11 401-500 Ans 501-600 9N 601-700 A -CF D. 10 Do = Lp + .C = Ans