1. The data represent the ages of our Presidents at the time they were first ina
ID: 2946321 • Letter: 1
Question
1. The data represent the ages of our Presidents at the time they were first inaugurated. 57 61 57 57 58 57 61 54 68 51 49 64 50 48 65 52 56 46 54 49 51 47 55 55 54 42 51 56 55 51 54 51 60 62 43 55 56 61 52 69 64 46 54 47 70 (a) Were the data obtained from a population or a sample? Explain your answer. (b) What was the age of the oldest President? (c) What was the age of the youngest President? (d) Construct a frequency distribution for the data. (Use your own judgement as to the number of classes and class size.)Explanation / Answer
Result:
a).
This is ages of all Presidents, it is a population.
b). maximum: 70
c) Minimum: 42
D)
cumulative
Class interval
frequency
percent
frequency
percent
41-45
2
4.4
2
4.4
46-50
8
17.8
10
22.2
51 -55
16
35.6
26
57.8
56-60
9
20.0
35
77.8
61-65
7
15.6
42
93.3
66-70
3
6.7
45
100.0
45
100.0
cumulative
Class interval
frequency
percent
frequency
percent
41-45
2
4.4
2
4.4
46-50
8
17.8
10
22.2
51 -55
16
35.6
26
57.8
56-60
9
20.0
35
77.8
61-65
7
15.6
42
93.3
66-70
3
6.7
45
100.0
45
100.0
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