The following data represent the afternoon high temperatures for 50 construction days during a year in Toronto.

a. Construct a frequency distribution for the data using five class intervals.b. Construct a frequency distribution for the data using 10 class intervals.c. Examine the results of (a) and (b) and comment on the usefulness of the frequency distribution in terms of temperature summarization capability.

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6 13 -9 3 -1 21 29 4 26 3 18 -12 8 19 21 7 -1 2 -8 -5 18 27 -11 -4 27 -9 2 2 11 -9 23 3 17 8 4 9 17 2 7 -1 -1 24 12 16 6 -4 29 -8 16 1