Question

The ages of 100 persons are tabulated below. Find Q1, Q3, D2, D8, P20 and P60. Above what age

we have the oldest 10% persons?

Age(in years) 10-20 20-30 30-40 40-50 50-60 60-70 70-80

No. of persons 16 20 21 28 10 3 2

Note: the oldest 10% are above P90​

Answer 1

Answer:

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