3. The data in Table 3.1 are from an investigation of an outbreak of severe abdominal pain, persistent vomiting, and generalized weakness among residents of a rural village. The cause of the outbreak was eventually identified as flour unintentionally contaminated with lead dust. Table 3.1 Age and Blood Lead Levels (BLLS) of Ill Villagers and Family Members-Country X, 1996 Age (Years) Age (Years) ID BLL Log1,BLL ID BLL Log1,BLL 3 69 1.84 1.66 1.69 1.92 22 33 33 103 2.01 1.66 1 4 45 23 46 49 84 48 58 24 25 26 27 35 35 36 36 38 40 78 50 1.89 1.70 1.81 1.83 1.90 1.76 4 7 9. 10 1.68 1.77 1.23 1.88 64 67 79 58 7 11 12 17 76 28 29 13 14 1.79 1.89 61 78 48 57 68 30 31 32 33 34 35 36 45 47 86 76 58 1.93 1.88 1.76 ? 1.41 10 11 12 13 15 1.68 49 15 16 16 17 1.76 1.83 56 60 65 65 65 70 26 104 39 2.02 1.59 1.54 1.86 1.76 1.58 1.64 14 15 26 78 56 54 73 ? 1.42 1.89 1.75 16 17 19 19 20 22 26 37 38 39 40 35 72 18 19 20 1.73 1.86 1.87 1.80 70 76 78 57 38 74 41 44 21 27 63 t Blood lead levels measured in micrograms per deciliter (mcg/dL) ? Missing value 1. Summarize the blood level data with a frequency distribution. 2. Calculate the arithmetic mean. 3. Identify the median and interquartile range. 4. Calculate the standard deviation. 5. Select and draw the most appropriate method (graph/chart) in presenting this data. Explain why you selected that type of method.
3. The data in Table 3.1 are from an investigation of an outbreak of severe abdominal pain, persistent vomiting, and generalized weakness among residents of a rural village. The cause of the outbreak was eventually identified as flour unintentionally contaminated with lead dust. Table 3.1 Age and Blood Lead Levels (BLLS) of Ill Villagers and Family Members-Country X, 1996 Age (Years) Age (Years) ID BLL Log1,BLL ID BLL Log1,BLL 3 69 1.84 1.66 1.69 1.92 22 33 33 103 2.01 1.66 1 4 45 23 46 49 84 48 58 24 25 26 27 35 35 36 36 38 40 78 50 1.89 1.70 1.81 1.83 1.90 1.76 4 7 9. 10 1.68 1.77 1.23 1.88 64 67 79 58 7 11 12 17 76 28 29 13 14 1.79 1.89 61 78 48 57 68 30 31 32 33 34 35 36 45 47 86 76 58 1.93 1.88 1.76 ? 1.41 10 11 12 13 15 1.68 49 15 16 16 17 1.76 1.83 56 60 65 65 65 70 26 104 39 2.02 1.59 1.54 1.86 1.76 1.58 1.64 14 15 26 78 56 54 73 ? 1.42 1.89 1.75 16 17 19 19 20 22 26 37 38 39 40 35 72 18 19 20 1.73 1.86 1.87 1.80 70 76 78 57 38 74 41 44 21 27 63 t Blood lead levels measured in micrograms per deciliter (mcg/dL) ? Missing value 1. Summarize the blood level data with a frequency distribution. 2. Calculate the arithmetic mean. 3. Identify the median and interquartile range. 4. Calculate the standard deviation. 5. Select and draw the most appropriate method (graph/chart) in presenting this data. Explain why you selected that type of method.
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Transcribed Image Text:3. The data in Table 3.1 are from an investigation of an outbreak of severe abdominal pain,
persistent vomiting, and generalized weakness among residents of a rural village. The
cause of the outbreak was eventually identified as flour unintentionally contaminated with
lead dust.
Table 3.1 Age and Blood Lead Levels (BLLS) of Ill Villagers and Family Members - Country X, 1996
Age
(Years)
Age
(Years)
ID
BLL
Log1,BLL
ID
BLL
Log1,BLL
1.84
1.66
1.69
1.92
69
45
22
33
33
103
46
78
50
2.01
1.66
1.89
1.70
1.81
1.83
2
4
23
49
84
24
25
26
27
28
29
35
35
4
7
1.68
1.77
1.23
1.88
1.79
1.89
1.68
1.76
1.83
9.
10
48
58
36
36
38
40
64
67
79
58
86
76
6.
7
1.90
1.76
1.93
1.88
1.76
11
17
12
76
9
10
13
14
61
78
30
31
45
47
11
15
48
32
33
34
35
36
49
58
?
26
104
39
12
13
15
16
16
17
57
68
56
60
65
65
65
70
1.41
2.02
1.59
1.54
1.86
1.76
1.58
1.64
?
26
14
15
16
17
1.42
1.89
1.75
19
19
78
56
37
38
39
40
35
72
18
19
20
21
20
22
26
54
73
1.73
1.86
70
76
57
38
74
1.87
41
78
44
27
63
1.80
t Blood lead levels measured in micrograms per deciliter (mcg/dL)
? Missing value
1. Summarize the blood level data with a frequency distribution.
2. Calculate the arithmetic mean.
3. Identify the median and interquartile range.
4. Calculate the standard deviation.
5. Select and draw the most appropriate method (graph/chart) in presenting this data. Explain
why you selected that type of method.
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