Question

In a survey, it was found that 64 families bought milk in the following quantities in a particular month. Quantities of milk (in litres) bought by 64 families in a month is listed below.
10 16 22 9 22 12 39 19
14 23 6 24 16 18 7 17
20 25 28 18 10 24 20 21
10 7 18 28 24 20 14 23
25 34 22 5 33 23 26 29
13 36 11 26 11 37 30 13
8 15 22 21 32 21 31 17
16 23 12 9 15 27 17 21

Required:
a)Construct a continuous frequency distribution making classes of 5-9, 10-14 and so on
b)Compute the,
i)Arithmetic mean,
ii)Geometric mean
iii) Harmonic mean
iv) Coefficient of variation