Fifty cities provided information on vacancy rates (in %) in local apartments in the following frequency distribution. Vacancy Rate (8) 0

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Chapter 2 Homework
8
Fifty cities provided information on vacancy rates (in %) in local apartments in the following frequency distribution.
Relative
Frequency
0.04
Vacancy Rate ()
0<x<3
3 < x < 6
6 < x≤ 9
9 < x < 12
12 < x < 15
a-1. Construct the frequency distribution, the cumulative frequency distribution, and the cumulative relative frequency distribution
(Round "Cumulative Relative Frequency" answers to 2 decimal places.)
0.28
0.40
0.26
0.02
Vacancy Rate (%) Frequency
0<x<3
3< x≤6
6<x59
9< x≤ 12.
12<x<15
Number of cities
Cumulative
Frequency
Cumulative
Relative
Frequency
a-2. How many of the cities had a vacancy rate of more than 6% but no more than 9%?
a-3. How many of the cities had a vacancy rate of 9% or less?
Transcribed Image Text:Chapter 2 Homework 8 Fifty cities provided information on vacancy rates (in %) in local apartments in the following frequency distribution. Relative Frequency 0.04 Vacancy Rate () 0<x<3 3 < x < 6 6 < x≤ 9 9 < x < 12 12 < x < 15 a-1. Construct the frequency distribution, the cumulative frequency distribution, and the cumulative relative frequency distribution (Round "Cumulative Relative Frequency" answers to 2 decimal places.) 0.28 0.40 0.26 0.02 Vacancy Rate (%) Frequency 0<x<3 3< x≤6 6<x59 9< x≤ 12. 12<x<15 Number of cities Cumulative Frequency Cumulative Relative Frequency a-2. How many of the cities had a vacancy rate of more than 6% but no more than 9%? a-3. How many of the cities had a vacancy rate of 9% or less?
00
8
a-3. How many of the cities had a vacancy rate of 9% or less?
Number of cities
a-4. What proportion of the cities had a vacancy rate of more than 9%? (Round your answer to 2 decimal places.)
Proportion of cities
b. Which statement is correct regarding the shape of the distribution using a histogram?
The distribution is relatively symmetric.
The distribution is positively skewed.
The distribution is negatively skewed.
Symmetry or skewness cannot be determined with the available information...
Transcribed Image Text:00 8 a-3. How many of the cities had a vacancy rate of 9% or less? Number of cities a-4. What proportion of the cities had a vacancy rate of more than 9%? (Round your answer to 2 decimal places.) Proportion of cities b. Which statement is correct regarding the shape of the distribution using a histogram? The distribution is relatively symmetric. The distribution is positively skewed. The distribution is negatively skewed. Symmetry or skewness cannot be determined with the available information...
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