Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Basic SQL Queries
Structured Query Language is the full form of SQL. It is a high-level language used to communicate with a relational database. It is used for creating, storing and accessing contents of a relational database. SQL is used to write the queries which are ex…
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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?
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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...
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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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Step 1: Frequency, cumulative frequency, relative frequency and cumulative relative frequency
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Step 2: Calculating frequency, cumulative frequency and cumulative relative frequency
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Step 4: Histogram and skewness
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