Question 2.222

brooklynfrauds2000

85. Frauds in brooklyn in 2000. Table 30 provides the number of misdemeanor fraud cases in each of Brooklyn's 23 police precincts in 2000.

Table 2.72: TABLE 30 Fraud cases in Brooklyn precincts, 2000
Precinct Frauds Precinct Frauds
40 60 75 198
41 198 76 45
42 92 77 83
43 109 78 33
44 79 79 156
45 240 81 69
46 130 83 78
47 89 84 54
48 210 88 107
49 89 90 45
50 103 94 46
52 95

82

  1. Use 7 classes of width 40 each, starting at the leftmost class: 0 to < 40. Find the frequencies for each class.
  2. Find the relative frequencies for each class.
  3. Construct a frequency histogram of the number of fraud cases in Brooklyn in 2000.
  4. Construct a relative frequency histogram of the number of fraud cases in Brooklyn in 2000.

2.2.85

(a) and (b)

Frauds Frequency Relative frequency
0 to < 40 1 1/23 = 0.0435
40 to < 80 8 8/23 = 0.3478
80 to < 120 8 8/23 = 0.3478
120 to < 160 2 2/23 = 0.0870
160 to < 200 2 2/23 = 0.0870
200 to < 240 1 1/23 = 0.0435
240 to < 280 1 1/23 = 0.0435
Total 23 23/23 = 1.0000

(c)

image

(d)

image