As the new manager of a small convenience store you want to

As the new manager of a small convenience store, you want to understand the shopping patterns of your customers. You randomly sample 20 purchases from yesterday\'s records. The amounts of those purchases (in dollars) are shown to the right. Complete parts a) through d). Make a histogram of the data using a bar width of $10. Choose the correct histogram below.

Solution

Ordering the data for easier counting,

4.15
10.18
21.02
32.24
32.51
34.27
37.49
38.42
40.42
40.76
46.53
47.82
47.94
51.81
56.63
64.03
65.9
74.97
82.92
94.83

Thus, binning them by 10\'s

Thus, making a histogram, we see that it is OPTION C that is correct. [ANSWER, C]

Bin	Frequency
0-10	1
10-20	1
20-30	1
30-40	5
40-50	5
50-60	2
60-70	2
70-80	1
80-90	1
90-100	1
More	0