Find the interquartile range and quartile deviation for the data in (a) Table 2.29 and (b) Table 2.30. Ans. (a) IR $0.10 and QD ≈ $0.05 (b) IR ≈ $476 and QD ≈ $238

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CHAP. 2]
MEASURES OF DISPERSION
2.38
DESCRIPTIVE STATISTICS
35
Find the interquartile range and quartile deviation for the data in (a) Table 2.29 and (b) Table 2.30.
Ans. (a) IR $0.10 and QD ≈ $0.05 (b) IR≈ $476 and QD ≈ $238
Transcribed Image Text:CHAP. 2] MEASURES OF DISPERSION 2.38 DESCRIPTIVE STATISTICS 35 Find the interquartile range and quartile deviation for the data in (a) Table 2.29 and (b) Table 2.30. Ans. (a) IR $0.10 and QD ≈ $0.05 (b) IR≈ $476 and QD ≈ $238
Table 2.29 Frequency Distribution of
Gasoline Prices
Price, $
1.00-1.04
1.05-1.09
1.10-1.14
1.15-1.19
1.20-1.24
1.25-1.29
Frequency
4
6
DESCRIPTIVE STATISTICS
10,000-11,999
12,000-13,999
14,000-15,999
16,000-17,999
18,000-19,999
20,000-21,999
10
15
8
5
Table 2.30 Frequency Distribution of
Family Incomes
Family Income, $
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
Transcribed Image Text:Table 2.29 Frequency Distribution of Gasoline Prices Price, $ 1.00-1.04 1.05-1.09 1.10-1.14 1.15-1.19 1.20-1.24 1.25-1.29 Frequency 4 6 DESCRIPTIVE STATISTICS 10,000-11,999 12,000-13,999 14,000-15,999 16,000-17,999 18,000-19,999 20,000-21,999 10 15 8 5 Table 2.30 Frequency Distribution of Family Incomes Family Income, $ 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
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