Question: look for the quartiles 1, 2 and 3 using the formula given. Age Classes X dl fdl Ecf 11-20 5 15.5 -3 -15 5 21-30

look for the quartiles 1, 2 and 3 using the formula given.

look for the quartiles 1, 2 and 3 using the formula given.Age Classes X dl fdl Ecf 11-20 5 15.5 -3 -15 5

Age Classes X dl fdl Ecf 11-20 5 15.5 -3 -15 5 21-30 7 25.5 -2 -14 12 31-40 12 35.5 -1 -12 24 41-50 22 45.5 0 0 46 51-60 8 55.5 1 8 54 61-70 4 65.5 2 8 58 71-80 2 75.5 3 6 60n - F Q1 = L + 4 . C 2n F2 Q2 = L + 4 . C f2 3n F3 Q3 = L + 4 f3

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