Question 2.228

coffees

91. Coffee Sales for the Student-Run Café. In Table 32, we see the number of coffees sold per day for the Student-Run café business. Consider this to be continuous data.

Table 2.75: TABLE 32 Coffees sold per day
41 30 21 25 21 4
33 27 28 35 8 13
34 30 23 33 8 4
27 27 31 35 4 16
20 26 29 16 4 14
23 24 48 24 3 10
32 18 25 20 5 11
31 22 31 11 6
  1. Use 7 classes of width 8 each, starting with the following leftmost class: 0 to < 8. Calculate the class boundaries.
  2. Find the frequencies for each class.
  3. Find the relative frequencies for each class.
  4. Construct a frequency histogram of coffees sold.
  5. Construct a relative frequency histogram of coffees sold.

83

2.2.91

(a), (b), (c)

Coffee sold per day Frequency Relative frequency
0 to < 8 7 7/47 = 0.1489
8 to < 16 7 7/47 = 0.1489
16 to < 24 10 10/47 = 0.2128
24 to < 32 15 15/47 = 0.3191
32 to < 40 6 6/47 = 0.1277
40 to < 48 1 1/47 = 0.0213
48 to < 56 1 1/47 = 0.0213
Total 47 47/47 = 1.0000

(d)

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(e)

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