DESCRIPTIVE STATISTICS Table 2.30 Frequency Distribution of Family Incomes Family Income, $ 10,000-11,999 12,000-13,999 14,000 15,999 16,000-17,999 18,000-19,999 20,000-21,999 22,000-23,999 24,000-25,999 26,000-27,999 28,000-29,999 Frequency 12 14 24 15 13 7 6 4 3 2 100

DESCRIPTIVE STATISTICS Table 2.30 Frequency Distribution of Family Incomes Family Income, $ 10,000-11,999 12,000-13,999 14,000 15,999 16,000-17,999 18,000-19,999 20,000-21,999 22,000-23,999 24,000-25,999 26,000-27,999 28,000-29,999 Frequency 12 14 24 15 13 7 6 4 3 2 100

ENGR.ECONOMIC ANALYSIS

14th Edition

ISBN:9780190931919

Author:NEWNAN

Publisher:NEWNAN

Chapter1: Making Economics Decisions

Section: Chapter Questions

Problem 1QTC

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DESCRIPTIVE STATISTICS
Table 2.30 Frequency Distribution of
Family Incomes
Family Income, $
10,000-11,999
12,000-13,999
14,000-15,999
16,000 17,999
18,000-19,999
20,000 21,999
22,000-23,999
24,000-25,999
26,000-27,999
28,000-29,999
Frequency
12
14
24
15
13
7
6
4
3
2
100

2.36
For the grouped data in Table 2.30, find (a) the first quartile, (b) the third quartile, (c)
and (d) the sixtieth percentile.
Ans. (a) Q₁ $13,857 (b) Q3 $19,538 (c) D3 $14,333 (d) P60 $17,333

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