Statistics 20: Quiz 1
Name:
Student ID:
Section: (2 pm) (3 pm)
September 13, 2006
Instructions: You have 30 minutes to complete the quiz. There are 5 ques
tions worth 2 points apiece for a total of 10 points. Show your work – this
means provide a formula, plug in the appropriate numbers, and then give
a ﬁnal solution. You may use a pocket calculator. Do not spend too much
time on any particular question at the expense of the others. Good luck!
Age
Total Population (Millions)
010
20
1020
10
2045
30
4070
15
7095
25
The above table depicts the age distribution for the population inhabiting
the island of Statististakia. Each group includes the left endpoint but not
the right. (So, for instance, the ﬁrst group includes people between the age
of 0 and 1, but does not include anyone 10 or older.) Use this information
to answer Questions 13.
1
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View Full Document1. Are there more 2 year olds or 71 year olds on the island of Statistis
takia??
Number of 2 year olds:
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 Spring '08
 Staff
 Statistics, Standard Deviation, Harshad number, 1%, Age Distribution, Olds

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