The volume of a stock is the number of shares traded on a given day. The following data, in millions, so that 6.42 represents 6,420,000 shares traded, represent the volume of Altria Group stock traded for a random sample of 35 trading days in 2014.

(a) If six classes are to be formed, choose an appropriate lower class limit for the first class and a class width.
(b) Construct a frequency distribution.
(c) Construct a relative frequency distribution.
(d) Construct a frequency histogram of the data.
(e) Construct a relative frequency histogram of the data.
(f) Describe the shape of the distribution.

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18.91 7.85 6.42 23.59 7.76 8.51 9.05 14.83 14.43 8.55 10.90 6.37 10.30 10.16 11.20 13.57 15.32 9.13 7.83 14.05 7.84 7.88 17.10 16.58 7.68 7.69 10.22 10.49 8.41 7.85 15.39 10.94 20.15 8.97 8.32